Description Summary:
A local privilege escalation vulnerability in Veeam ONE allows a high-privileged user to escalate their permissions to the context of the Reporter service.

Executive Summary:
Veeam ONE contains a local privilege escalation flaw that allows authorized administrators to gain unauthorized access to the Reporter service context.

Vulnerability Details

CVE-ID: CVE-2026-64634

Affected Software: Veeam ONE

Affected Versions: 0 through 13.0.2

Vulnerability: This issue is a CWE-269 improper privilege management flaw. It enables an attacker who already possesses high privileges to further escalate their status to the Reporter service context, effectively bypassing intended security boundaries.

Business Impact

By escalating to the Reporter service context, an attacker can gain total control over the service's functions, leading to potential system-wide disruption or unauthorized configuration changes. The CVSS score of 8.4 confirms the high risk associated with this escalation vector.

Remediation Plan

Immediate Action: Review the Veeam Knowledge Base (KB4892) and apply the latest security patches provided by the vendor.

Proactive Monitoring: Audit administrative user activity and monitor service account behaviors for unauthorized actions or privilege misuse.

Compensating Controls: Adhere to the principle of least privilege by strictly controlling which users have administrative access to the server hosting the Veeam ONE software.

Exploitation Status

Public Exploit Available: No

Analyst Notes: As of August 5, 2026, there is no public information indicating active exploitation or a public proof-of-concept for this vulnerability. While this requires existing high-level access, it significantly increases the impact of a compromised administrative account.

Analyst Recommendation

All administrators should monitor official Veeam security channels for the release of patches addressing this vulnerability. Given the risk of total privilege escalation, patching should be performed as soon as the vendor provides a resolution to prevent potential system compromise by malicious insiders or compromised administrative accounts.

Description Summary:
A critical code injection vulnerability in Veeam ONE allows remote unauthenticated attackers to execute arbitrary code on the agent host.

Executive Summary:
This critical vulnerability in Veeam ONE poses a severe risk of full system compromise via remote unauthenticated code execution.

Vulnerability Details

CVE-ID: CVE-2026-64633

Affected Software: Veeam ONE

Affected Versions: 0 through 13.0.2

Vulnerability: The software contains a code injection flaw (CWE-94) that permits an unauthenticated remote attacker to execute arbitrary code on the underlying agent host. The attack vector is network based and requires no user interaction or prior authentication.

Business Impact

Successful exploitation of this vulnerability grants an attacker full control over the affected Veeam ONE agent host. Given the CVSS score of 10.0, this represents the highest level of risk: it can lead to total data exfiltration, complete system compromise, and significant operational downtime.

Remediation Plan

Immediate Action: Update Veeam ONE to the latest available version as specified in the official vendor security advisory (KB4892).

Proactive Monitoring: Monitor network traffic for anomalous patterns originating from the Veeam ONE environment and review system logs for unauthorized process execution.

Compensating Controls: Implement strict network segmentation and firewall rules to restrict access to the Veeam ONE agent host to authorized management IPs only.

Exploitation Status

Public Exploit Available: Unknown

Analyst Notes: As of August 4, 2026, there is no public information indicating active exploitation or a public proof-of-concept for this vulnerability. The flaw is inherently dangerous due to its remote, unauthenticated nature and the high technical impact associated with code execution.

Analyst Recommendation

The severity of this vulnerability necessitates immediate attention. Organizations should prioritize updating their Veeam ONE deployments to the latest version to eliminate the code injection path and prevent potential unauthorized access or system takeover.

Description Summary:
A vulnerability in Veeam ONE allows a low-privileged user to capture NTLM credentials from the Reporter service account, potentially leading to unauthorized system access.

Executive Summary:
A high-severity credential exposure vulnerability in Veeam ONE allows low-privileged users to intercept NTLM service account credentials, posing a significant risk of lateral movement.

Vulnerability Details

CVE-ID: CVE-2026-64632

Affected Software: Veeam ONE

Affected Versions: 0 through 13.0.2

Vulnerability: The flaw is classified as CWE-522, involving insufficiently protected credentials. An authenticated low-privileged user can leverage this weakness to capture the NTLM hash of the Reporter service account, which may grant elevated privileges within the environment.

Business Impact

Successful exploitation of this vulnerability presents a severe risk to organizational security, as the compromised service account credentials could be used to escalate privileges or perform unauthorized lateral movement. Given the CVSS score of 8.5, this high-severity issue necessitates immediate attention to prevent the compromise of sensitive administrative accounts and internal infrastructure.

Remediation Plan

Immediate Action: Review the official Veeam knowledge base article KB4892 and apply the latest security updates provided by the vendor to remediate the credential exposure.

Proactive Monitoring: Audit access logs for unusual authentication patterns or unauthorized requests directed at the Reporter service component.

Compensating Controls: Implement network segmentation and restrict access to the Veeam ONE interface to known, trusted users to minimize the potential for exploitation by low-privileged entities.

Exploitation Status

Public Exploit Available: No

Analyst Notes: As of August 27, 2026, there is no public information indicating active exploitation or a public proof-of-concept for this vulnerability. The reliance on NTLM credential capturing typically requires an attacker to have established a foothold as an authenticated user, highlighting the importance of strict access control.

Analyst Recommendation

Organizations utilizing Veeam ONE versions 13.0.2 and earlier should prioritize patching to mitigate the risk of credential theft. Because this vulnerability facilitates the compromise of service account credentials, prompt remediation is essential to maintain the integrity of the backup management environment and prevent broader network compromise.

Description Summary:
A SQL injection vulnerability in Veeam ONE allows low-privileged users to execute unauthorized database queries and extract sensitive information.

Executive Summary:
Veeam ONE is susceptible to a SQL injection vulnerability that permits unauthorized database access by low-privileged users.

Vulnerability Details

CVE-ID: CVE-2026-64631

Affected Software: Veeam ONE

Affected Versions: 0 through 13.0.2

Vulnerability: This vulnerability, identified as CWE-89, involves improper neutralization of special elements used in an SQL command. It allows a low-privileged authenticated user to manipulate database queries to exfiltrate data.

Business Impact

The ability to extract database contents presents a severe risk of data breach and unauthorized disclosure of sensitive monitoring information. Given the CVSS score of 8.6, this vulnerability could be leveraged to gain deep insight into the internal environment, potentially aiding further lateral movement.

Remediation Plan

Immediate Action: Consult the Veeam Knowledge Base (KB4892) and apply the latest security updates provided by the vendor.

Proactive Monitoring: Monitor database query logs for unusual patterns, such as unexpected syntax or large data retrieval requests originating from standard user accounts.

Compensating Controls: Implement a Web Application Firewall or database firewall to filter malicious SQL syntax, and restrict database permissions for non-administrative accounts.

Exploitation Status

Public Exploit Available: No

Analyst Notes: As of August 5, 2026, there is no public information indicating active exploitation or a public proof-of-concept for this vulnerability. The vulnerability is highly exploitable via network-based vectors, requiring immediate attention to prevent unauthorized data access.

Analyst Recommendation

Organizations using Veeam ONE should verify their current version and apply patches as soon as they are made available by Veeam. Given the high potential for data exfiltration, ensuring that all security updates are applied is critical to protecting the confidentiality of the monitored environment.

Description Summary:
Veeam ONE contains an arbitrary file read vulnerability that allows unauthenticated attackers to access sensitive host files and escalate privileges locally.

Executive Summary:
An unauthenticated arbitrary file read vulnerability in Veeam ONE poses a critical risk of full system compromise and unauthorized data access.

Vulnerability Details

CVE-ID: CVE-2026-58075

Affected Software: Veeam ONE

Affected Versions: 0 through 13.0.2

Vulnerability: This vulnerability involves improper authentication, allowing an unauthenticated remote attacker to read arbitrary files from the underlying host. Successful exploitation can be leveraged to escalate local privileges.

Business Impact

The ability for an unauthenticated user to read sensitive files on a management server like Veeam ONE represents a severe security breach. Given the CVSS score of 8.7, this flaw could lead to the exposure of configuration files, credentials, or system data, facilitating further lateral movement and total system compromise.

Remediation Plan

Immediate Action: Update Veeam ONE to the latest version as specified in the vendor advisory (KB4892).

Proactive Monitoring: Review system access logs for unusual file read requests or unexpected administrative activity originating from unauthorized sources.

Compensating Controls: Deploy a Web Application Firewall (WAF) with rules configured to block suspicious requests targeting sensitive file paths on the application server.

Exploitation Status

Public Exploit Available: false

Analyst Notes: As of August 5, 2026, there is no public information indicating active exploitation or a public proof-of-concept for this vulnerability. The flaw is highly dangerous due to the lack of required authentication for exploitation.

Analyst Recommendation

The severity of this vulnerability necessitates immediate attention. Organizations should prioritize patching their Veeam ONE instances to the latest secure version to prevent unauthorized access and potential privilege escalation.

Description Summary:
Veeam ONE is vulnerable to a code injection flaw that allows a high-privileged user to execute arbitrary code on the server.

Executive Summary:
A critical code injection vulnerability in Veeam ONE versions up to 13.0.2 allows authenticated attackers with high privileges to execute arbitrary code on the server.

Vulnerability Details

CVE-ID: CVE-2026-58074

Affected Software: Veeam ONE

Affected Versions: 0 through 13.0.2

Vulnerability: This is a code injection vulnerability (CWE-94) that requires an attacker to possess high-level administrative privileges to successfully execute arbitrary code.

Business Impact

The ability for a high-privileged user to execute arbitrary code constitutes a total compromise of the affected server. With a CVSS score of 8.6, the business impact is severe, potentially leading to unauthorized data access, system manipulation, or the deployment of further malicious payloads within the management environment.

Remediation Plan

Immediate Action: Update Veeam ONE to the latest secure version as specified in the vendor advisory (KB4892) to eliminate the injection vector.

Proactive Monitoring: Audit administrative access logs for unusual command execution patterns or unauthorized changes to system configurations.

Compensating Controls: Enforce strict access control policies and the principle of least privilege to ensure that only authorized personnel can interact with the server management interfaces.

Exploitation Status

Public Exploit Available: Unknown.

Analyst Notes: As of August 5, 2026, there is no public information indicating active exploitation or a public proof-of-concept for this vulnerability. While the attack requires high privileges, the resulting impact is catastrophic for the integrity and availability of the Veeam ONE platform.

Analyst Recommendation

Security teams must treat this vulnerability as high priority. Immediately review the official Veeam KB4892 advisory and apply the recommended updates to ensure that the code injection flaw is remediated and the management server is secured against potential internal threats.

Description Summary:
An unauthenticated vulnerability in the Veeam Service Provider Console allows unauthorized access to the proxied appliance API as a Portal Administrator during a narrow session window.

Executive Summary:
A critical authentication bypass vulnerability in the Veeam Service Provider Console allows unauthenticated attackers to gain administrative API access, posing a severe risk of unauthorized system control.

Vulnerability Details

CVE-ID: CVE-2026-58071

Affected Software: Veeam Service Provider Console

Affected Versions: Veeam Service Provider Console: 0 up to (excluding) 9.3

Vulnerability: This is a missing authentication flaw (CWE-306) within the proxied appliance API. An unauthenticated attacker can exploit this during a specific timing window immediately following the initiation of an administrator session to impersonate a Portal Administrator.

Business Impact

Successful exploitation allows an attacker to interact with the API with the privileges of a Portal Administrator, which could lead to full system compromise or unauthorized management of customer environments. Given the CVSS score of 8.2, this vulnerability represents a high risk to operational integrity and data security, necessitating immediate attention.

Remediation Plan

Immediate Action: Upgrade to Veeam Service Provider Console version 9.3 or later as specified in the vendor advisory.

Proactive Monitoring: Audit API access logs for anomalous requests or unauthorized administrative actions that occur shortly after legitimate administrator sessions begin.

Compensating Controls: Implement strict network access controls to restrict access to the appliance API to trusted management subnets until patching is completed.

Exploitation Status

Public Exploit Available: Unknown

Analyst Notes: As of August 5, 2026, there is no public information indicating active exploitation or a public proof-of-concept for this vulnerability. The flaw's requirement for precise timing makes it more complex to exploit, but the impact of administrative access remains high.

Analyst Recommendation

The potential for unauthenticated administrative access makes this a high priority for remediation. Administrators should verify their current version and apply the vendor-provided update immediately to eliminate this exposure.

Description Summary:
Veeam Service Provider Console is susceptible to memory exhaustion, allowing an unauthenticated attacker to cause a denial of service on the host system.

Executive Summary:
A critical denial of service vulnerability in Veeam Service Provider Console allows unauthenticated attackers to crash the host system by exhausting available memory.

Vulnerability Details

CVE-ID: CVE-2026-58067

Affected Software: Veeam Service Provider Console

Affected Versions: 0 up to (excluding) 9.3

Vulnerability: The software contains a memory allocation flaw (CWE-789) where it accepts excessive size values during processing. This allows an unauthenticated remote attacker to trigger a denial of service condition by exhausting host memory.

Business Impact

Successful exploitation results in total loss of service availability for the affected console, which can disrupt management operations for downstream services. The CVSS score of 8.7 highlights the severity of this risk, as it permits unauthenticated actors to remotely destabilize critical infrastructure components.

Remediation Plan

Immediate Action: Update to Veeam Service Provider Console version 9.3 or higher as directed in the vendor's knowledge base article KB4893.

Proactive Monitoring: Monitor system resource usage, specifically memory consumption, to detect spikes that may indicate an ongoing denial of service attempt.

Compensating Controls: Deploy a Web Application Firewall or similar filtering solution to drop malformed requests that attempt to pass excessive size values to the console.

Exploitation Status

Public Exploit Available: Unknown.

Analyst Notes: As of August 5, 2026, there is no public information indicating active exploitation or a public proof-of-concept for this vulnerability. The flaw is highly dangerous due to its lack of authentication requirements and the potential for remote disruption.

Analyst Recommendation

This vulnerability represents a significant risk to service continuity for managed service providers. Organizations using Veeam Service Provider Console must apply the vendor patch immediately to prevent potential remote service disruption.

Description Summary:
A vulnerability allows a user with Backup Viewer privileges to perform remote code execution as the postgres user on the backup system.

Executive Summary:
Veeam Backup & Replication contains a critical flaw allowing low-privileged Backup Viewers to execute arbitrary code as the postgres user, leading to database and system compromise.

Vulnerability Details

CVE-ID: CVE-2026-21708

Affected Software: Veeam Backup & Replication

Affected Versions: See vendor advisory for specific affected versions

Vulnerability: This vulnerability allows an attacker with "Backup Viewer" privileges to achieve remote code execution (RCE). The exploit specifically targets the underlying database component, allowing code to run in the context of the postgres user.

Business Impact

By gaining RCE as the postgres user, an attacker can directly manipulate the backup database, extract sensitive configuration data, or escalate privileges to the full system level. The CVSS score of 9.9 reflects the high severity, as it allows a user with minimal read-only permissions to achieve high-impact execution.

Remediation Plan

Immediate Action: Update the affected Veeam components to the latest version to patch the privilege escalation and RCE path.

Proactive Monitoring: Review database logs for unexpected queries or shell commands executed by the postgres service account.

Compensating Controls: Enforce strict Role-Based Access Control (RBAC) and ensure the database service is running with the minimum necessary permissions on the host operating system.

Exploitation Status

Public Exploit Available: No

Analyst Notes: As of Mar 12, 2026, there is no public information indicating active exploitation of this vulnerability. The risk is particularly high for organizations with many users assigned the Backup Viewer role, as any of those accounts could be leveraged for the attack.

Analyst Recommendation

Immediate remediation is required to prevent low-privileged users from compromising the entire backup database. Apply the vendor's patch immediately and verify that the Backup Viewer role is only assigned to necessary personnel.

Description Summary:
A local privilege escalation vulnerability in Veeam Backup & Replication allows low-privileged users to achieve total system compromise via file and directory information exposure.

Executive Summary:
A critical local privilege escalation flaw in Veeam Backup & Replication enables low-privileged users to gain full control over the host system, necessitating immediate patching.

Vulnerability Details

CVE-ID: CVE-2026-21672

Affected Software: Veeam Backup & Replication

Affected Versions: 12 up to 12.3.2, 13 up to 13.0.1

Vulnerability: This vulnerability, categorized as CWE-538, involves improper file and directory information exposure that permits a locally authenticated user with low privileges to escalate their access to system level.

Business Impact

Successful exploitation of this vulnerability allows an attacker to bypass standard operating system security boundaries, leading to full administrative control over the backup server. Given the CVSS score of 8.8, this represents a high-severity risk that could facilitate data theft, ransomware deployment, or the total compromise of backup integrity, which is critical for disaster recovery operations.

Remediation Plan

Immediate Action: Update Veeam Backup & Replication to the latest patched version as specified in the vendor security advisory (KB4831 or KB4830).

Proactive Monitoring: Monitor server logs for unusual process execution patterns or unauthorized attempts to access system directories by non-administrative accounts.

Compensating Controls: Restrict local login access to the backup server to only necessary personnel and ensure that the principle of least privilege is strictly enforced for all user accounts on the host.

Exploitation Status

Public Exploit Available: No

Analyst Notes: As of March 14, 2026, there is no public information indicating active exploitation or a public proof-of-concept for this vulnerability. While the vulnerability requires local access, the scope of impact is total, making it a high-priority target for lateral movement within a compromised network.

Analyst Recommendation

Organizations utilizing Veeam Backup & Replication must prioritize the application of the vendor-provided patches. Due to the potential for full system compromise, delaying these updates significantly increases the risk profile of the backup infrastructure, which is a primary target for sophisticated adversaries.

Description Summary:
An authenticated user with the Backup Administrator role can perform remote code execution in high availability deployments of Veeam Backup & Replication.

Executive Summary:
A critical remote code execution vulnerability in Veeam Backup & Replication high availability deployments allows authenticated Backup Administrators to compromise the system.

Vulnerability Details

CVE-ID: CVE-2026-21671

Affected Software: Veeam Backup & Replication

Affected Versions: See vendor advisory for specific affected versions

Vulnerability: This vulnerability affects high availability (HA) deployments. An attacker who has already obtained Backup Administrator privileges can leverage a flaw in the HA synchronization or management component to execute arbitrary code on the server.

Business Impact

While this requires high-level "Backup Administrator" privileges, the impact of RCE is still critical (CVSS 9.1) because it allows an administrator to bypass audit logs, establish persistence, or move laterally into the underlying operating system. This could be used by a malicious insider or an attacker who has compromised an admin's credentials to inflict maximum damage.

Remediation Plan

Immediate Action: Update Veeam Backup & Replication to the latest version. Consult the vendor advisory for specific patches related to HA deployments.

Proactive Monitoring: Closely audit all actions taken by accounts with the Backup Administrator role, specifically looking for unusual system-level changes.

Compensating Controls: Implement strict "Four-Eyes" (dual authorization) principles for sensitive backup operations and use dedicated, isolated workstations for administrative tasks.

Exploitation Status

Public Exploit Available: No

Analyst Notes: As of Mar 12, 2026, there is no public information indicating active exploitation of this vulnerability. The requirement for administrative privileges slightly reduces the likelihood of external exploitation but remains a major internal risk.

Analyst Recommendation

Even though administrative privileges are required, the potential for an attacker to escalate from application-level admin to full system-level RCE makes this a critical fix. Apply the recommended updates immediately to maintain the integrity of HA backup environments.

Description Summary:
A security flaw allows a low-privileged local user to extract saved SSH credentials from the affected software's storage or memory.

Executive Summary:
A high-severity vulnerability allows low-privileged users to extract sensitive SSH credentials, facilitating lateral movement and unauthorized system access.

Vulnerability Details

CVE-ID: CVE-2026-21670

Affected Software: The affected software (Vendor Unknown)

Affected Versions: See vendor advisory for specific affected versions

Vulnerability: This vulnerability allows an authenticated, low-privileged user to access and extract saved SSH credentials that should be securely isolated. The flaw typically involves improper file permissions, insecure storage of secrets, or memory leakage within the application's local environment.

Business Impact

The extraction of SSH credentials poses a severe risk of lateral movement across the network. An attacker with local access can elevate their influence by accessing remote servers using the stolen credentials, leading to widespread data compromise and system control. The CVSS score of 7.7 underscores the high impact on confidentiality and the potential for cascading security failures.

Remediation Plan

Immediate Action: Apply the vendor-provided security patch immediately to secure the credential storage mechanism.

Proactive Monitoring: Monitor for unusual SSH login activity originating from users who should not have access to those credentials and review local system access logs.

Compensating Controls: Implement the principle of least privilege, ensuring that low-privileged users cannot access directories where sensitive configuration files or credential stores are located.

Exploitation Status

Public Exploit Available: false

Analyst Notes: As of March 14, 2026, there is no public information indicating active exploitation of this vulnerability. Credential extraction flaws are highly valuable to internal threats or attackers who have already gained a foothold on a system.

Analyst Recommendation

This vulnerability is a significant risk for environments with multi-user access. We recommend an immediate update to the affected software to prevent credential theft. Furthermore, organizations should rotate any SSH keys or passwords that may have been stored within the vulnerable software versions to ensure continued environment integrity.

Description Summary:
An authenticated domain user can execute arbitrary code on the Backup Server, leading to a complete compromise of the backup system.

Executive Summary:
A critical remote code execution vulnerability in the Veeam Backup Server allows authenticated domain users to gain unauthorized system-level access.

Vulnerability Details

CVE-ID: CVE-2026-21669

Affected Software: Veeam Backup & Replication

Affected Versions: See vendor advisory for specific affected versions

Vulnerability: This flaw allows a user already authenticated within the domain to execute remote code on the Backup Server. The vulnerability is triggered through a flaw in the server's internal communication protocols that fails to properly restrict command execution.

Business Impact

The business impact is catastrophic, as a successful exploit grants the attacker the ability to manipulate or delete critical backups. The CVSS score of 9.9 highlights the extreme risk to organizational continuity, as it allows an internal threat or a compromised domain account to bypass standard security boundaries.

Remediation Plan

Immediate Action: Upgrade the affected software to the most recent version provided by the vendor to eliminate the vulnerable code path.

Proactive Monitoring: Audit access logs for the Backup Server to identify any unusual login patterns or command execution from standard domain user accounts.

Compensating Controls: Use Host Intrusion Prevention Systems (HIPS) to monitor for suspicious process spawning from the backup service.

Exploitation Status

Public Exploit Available: No

Analyst Notes: As of Mar 12, 2026, there is no public information indicating active exploitation of this vulnerability. Despite the lack of current active exploitation, the technical simplicity of exploiting such RCE flaws once discovered makes immediate patching essential.

Analyst Recommendation

This vulnerability poses a significant risk to the availability of business data. Administrators should follow the remediation plan and apply the primary security patch immediately to ensure the backup infrastructure remains secure against authenticated attackers.

Description Summary:
A vulnerability in Veeam Backup and Replication allows an authenticated domain user to bypass security restrictions and manipulate arbitrary files on a Backup Repository.

Executive Summary:
A high-severity file manipulation vulnerability in Veeam Backup and Replication allows authenticated users to compromise backup integrity and potentially escalate privileges.

Vulnerability Details

CVE-ID: CVE-2026-21668

Affected Software: Veeam Backup and Replication

Affected Versions: 12.3.2 (up to, excluding 12.3.2)

Vulnerability: This vulnerability involves a flaw in access control mechanisms that permits an authenticated domain user to perform unauthorized file operations on a Backup Repository. The attacker must possess authenticated access to the network to trigger this issue.

Business Impact

The ability for an authenticated user to manipulate arbitrary files on a backup repository presents a significant risk to data integrity and business continuity. An attacker could modify, corrupt, or delete backup archives, effectively neutralizing disaster recovery capabilities and facilitating ransomware persistence. Given the CVSS score of 8.8, this vulnerability is considered a high-priority threat that could lead to complete loss of data availability if exploited.

Remediation Plan

Immediate Action: Update Veeam Backup and Replication to the version specified in the vendor advisory (KB4830) to resolve the underlying access control flaw.

Proactive Monitoring: Review system access logs for unusual file modification patterns within the Backup Repository paths and monitor for unauthorized administrative actions by domain users.

Compensating Controls: Restrict access to the Backup Repository to the minimum number of necessary service accounts and ensure that repository file system permissions are hardened to prevent unauthorized modification by standard domain users.

Exploitation Status

Public Exploit Available: Unknown.

Analyst Notes: As of March 14, 2026, there is no public information indicating active exploitation or a public proof-of-concept for this vulnerability. While exploitation requires authenticated access, the potential for total impact on data integrity makes this a critical concern for backup infrastructure security.

Analyst Recommendation

Organizations utilizing Veeam Backup and Replication should prioritize the application of the vendor-provided patch as specified in KB4830. Because this vulnerability targets the integrity of backup data, it poses a direct threat to organizational resilience and must be remediated without delay.

Description Summary:
A vulnerability in the Backup Server allows an authenticated domain user to perform remote code execution, compromising the backup environment.

Executive Summary:
Veeam Backup & Replication is vulnerable to a critical remote code execution flaw that permits authenticated domain users to take full control of the backup server.

Vulnerability Details

CVE-ID: CVE-2026-21667

Affected Software: Veeam Backup & Replication

Affected Versions: See vendor advisory for specific affected versions

Vulnerability: This vulnerability enables an authenticated domain user to trigger remote code execution (RCE) on the Backup Server. The issue resides in the way the server handles specific requests from authenticated users within the domain environment.

Business Impact

An attacker who exploits this vulnerability can compromise the integrity of the entire backup repository, making it impossible to recover data during a disaster. Given the CVSS score of 9.9, the risk to the organization is severe, as it facilitates lateral movement and provides a foothold for large-scale data exfiltration or ransomware deployment.

Remediation Plan

Immediate Action: Apply the latest security updates provided by Veeam to all Backup & Replication instances immediately.

Proactive Monitoring: Monitor for anomalous network traffic originating from domain user accounts directed toward the backup infrastructure management ports.

Compensating Controls: Implement network segmentation to isolate the backup server from general domain traffic and utilize multi-factor authentication for all administrative access.

Exploitation Status

Public Exploit Available: No

Analyst Notes: As of Mar 12, 2026, there is no public information indicating active exploitation of this vulnerability. However, the high CVSS score and the critical role of the affected product make this a likely target for sophisticated threat actors.

Analyst Recommendation

We recommend that IT administrators treat this as a high-priority emergency patch. Immediate application of the vendor-supplied update is necessary to protect the organization's data recovery capabilities and prevent unauthorized remote code execution.

Description Summary:
An authenticated domain user can achieve remote code execution on the Backup Server, leading to full system compromise.

Executive Summary:
A critical remote code execution vulnerability in Veeam Backup & Replication allows authenticated domain users to compromise the backup infrastructure, potentially leading to total data loss.

Vulnerability Details

CVE-ID: CVE-2026-21666

Affected Software: Veeam Backup & Replication

Affected Versions: See vendor advisory for specific affected versions

Vulnerability: This flaw allows a remote attacker with authenticated domain user privileges to execute arbitrary code on the underlying Backup Server. The vulnerability stems from improper validation of user-supplied input within a core service component.

Business Impact

Successful exploitation allows an attacker to gain full control over the backup server, which is a high-value target for ransomware operators. This could result in the deletion or encryption of backups, long-term system downtime, and significant reputational damage. The CVSS score of 9.9 reflects the critical nature of this vulnerability and the near-total impact on confidentiality, integrity, and availability.

Remediation Plan

Immediate Action: Update Veeam Backup & Replication to the latest patched version immediately to close the RCE vector.

Proactive Monitoring: Review Windows Event Logs and Veeam service logs for unusual process executions or unauthorized service account activity.

Compensating Controls: Restrict network access to the Backup Server using firewalls and ensure that domain user accounts follow the principle of least privilege to limit the attack surface.

Exploitation Status

Public Exploit Available: No

Analyst Notes: As of Mar 12, 2026, there is no public information indicating active exploitation of this vulnerability. However, due to the critical nature of remote code execution on backup infrastructure, the potential for exploitation by ransomware groups is extremely high.

Analyst Recommendation

The severity of this vulnerability cannot be overstated, as the backup server represents the last line of defense against data loss. Organizations must prioritize this update and apply the primary remediation patch immediately to mitigate the risk of a full infrastructure takeover.

Description Summary:
A vulnerability in Veeam Backup and Recovery allows an authenticated Backup or Tape Operator to execute arbitrary code as root via a crafted backup configuration file.

Executive Summary:
A critical vulnerability in Veeam Backup and Recovery enables authenticated operators to achieve remote code execution as root, posing a severe risk to backup infrastructure integrity.

Vulnerability Details

CVE-ID: CVE-2025-55125

Affected Software: Veeam Backup and Recovery

Affected Versions: 13.0.0 through 13.0.0

Vulnerability: This flaw involves an improper handling of backup configuration files that allows an authenticated user with Backup or Tape Operator privileges to escalate their permissions to root. The vulnerability effectively turns a legitimate administrative function into a vector for full system compromise.

Business Impact

The ability for an operator to achieve root-level code execution represents a total compromise of the backup server. Given the CVSS score of 7.8, this vulnerability poses a significant risk to data integrity and business continuity, as attackers could modify, delete, or exfiltrate sensitive backup data.

Remediation Plan

Immediate Action: Review the official vendor advisory at https://www.veeam.com/kb4792 and apply all recommended security updates or configuration workarounds provided by Veeam.

Proactive Monitoring: Monitor system logs for unauthorized modifications to backup configuration files and unusual process execution patterns originating from the Backup or Tape Operator accounts.

Compensating Controls: Restrict administrative access to the backup server to a minimal set of trusted personnel and implement strict least-privilege policies to ensure only necessary users hold operator roles.

Exploitation Status

Public Exploit Available: exploit_available (false)

Analyst Notes: As of January 10, 2026, there is no public information indicating active exploitation or a public proof-of-concept for this vulnerability. The flaw is inherently dangerous due to the high-privilege context required for the escalation.

Analyst Recommendation

This vulnerability is highly severe because it allows for a complete takeover of the backup environment by an existing user. Organizations utilizing Veeam Backup and Recovery version 13.0.0 must prioritize the application of vendor-supplied patches or security guidance immediately to prevent potential unauthorized root access and data manipulation.

Description Summary:
A remote code execution vulnerability exists in Veeam Backup and Replication, allowing an authenticated domain user to execute arbitrary code on the backup server.

Executive Summary:
An authenticated remote code execution vulnerability in Veeam Backup and Replication poses a critical risk to data integrity and infrastructure security.

Vulnerability Details

CVE-ID: CVE-2025-48984

Affected Software: Veeam Backup and Replication

Affected Versions: 12.3.2 through 12.3.2

Vulnerability: The vulnerability allows an authenticated domain user to achieve remote code execution on the backup server. The attack vector is network based and requires low privileges but no user interaction.

Business Impact

The ability for an authenticated user to gain remote code execution on a backup server represents a severe threat to business continuity. Successful exploitation could lead to the total compromise of backup data, facilitating ransomware attacks or unauthorized exfiltration of sensitive organizational information. With a CVSS score of 8.8, this vulnerability is classified as High and requires immediate remediation to prevent lateral movement within the network.

Remediation Plan

Immediate Action: Consult the vendor advisory at https://www.veeam.com/kb4771 to identify the specific patch version and apply it to all affected backup servers immediately.

Proactive Monitoring: Review authentication and system access logs for anomalous behavior or unauthorized command execution originating from domain user accounts.

Compensating Controls: Restrict network access to the backup server management interface to authorized administrative segments only, and ensure that service accounts are limited by the principle of least privilege.

Exploitation Status

Public Exploit Available: Unknown

Analyst Notes: As of November 1, 2025, there is no public information indicating active exploitation or a public proof-of-concept for this vulnerability. The vulnerability is inherently dangerous due to the potential for full system compromise once initial authentication is gained.

Analyst Recommendation

Given the potential for total system compromise, organizations should prioritize patching Veeam Backup and Replication servers as soon as the vendor provides the necessary update. Security teams must treat this as a high priority item, ensuring that all backup infrastructure is updated to a secure version to prevent exploitation by malicious actors who have gained valid domain credentials.

Description Summary:
A remote code execution vulnerability in the Veeam Backup & Replication Mount service allows an authenticated domain user to execute arbitrary code on backup infrastructure hosts.

Executive Summary:
Veeam Backup & Replication contains a critical remote code execution vulnerability that allows an authenticated domain user to compromise backup infrastructure hosts.

Vulnerability Details

CVE-ID: CVE-2025-48983

Affected Software: Veeam Backup & Replication

Affected Versions: 12.3.2

Vulnerability: The flaw exists within the Mount service, which fails to properly sanitize requests, allowing an authenticated domain user to achieve remote code execution. This vulnerability requires the attacker to possess valid domain credentials to reach the vulnerable service.

Business Impact

The ability for an authenticated user to execute remote code on backup infrastructure poses a catastrophic risk to organizational data integrity and availability. Because Veeam servers often hold administrative access to the entire backup environment, this vulnerability could allow an attacker to delete, encrypt, or exfiltrate sensitive backup data. With a CVSS score of 9.9, this issue is classified as critical and warrants immediate attention to prevent unauthorized system control.

Remediation Plan

Immediate Action: Update Veeam Backup & Replication to the latest version as specified in the vendor security advisory (KB4771).

Proactive Monitoring: Monitor backup infrastructure logs for unusual service activity or unauthorized execution attempts originating from domain user accounts.

Compensating Controls: Restrict access to the Mount service and backup infrastructure management interfaces to only those personnel strictly requiring administrative access.

Exploitation Status

Public Exploit Available: Unknown

Analyst Notes: As of Nov 01, 2025, there is no public information indicating active exploitation or a public proof-of-concept for this vulnerability. While the vulnerability is not currently observed in the wild, its critical impact on backup infrastructure makes it an attractive target for threat actors seeking to disable recovery capabilities.

Analyst Recommendation

Given the critical CVSS severity of 9.9 and the potential for total compromise of backup infrastructure, organizations must prioritize patching this vulnerability immediately. Administrators should follow the official Veeam guidance provided in KB4771 to ensure all backup hosts are secured against potential exploitation. Delaying this update significantly increases the risk of a successful, high-impact security incident.

Description Summary:
A local privilege escalation vulnerability in Veeam Agent for Microsoft Windows allows attackers to elevate privileges by tricking administrators into restoring a malicious file.

Executive Summary:
A local privilege escalation vulnerability in Veeam Agent for Microsoft Windows poses a significant security risk, as it allows attackers to gain elevated system access through social engineering.

Vulnerability Details

CVE-ID: CVE-2025-48982

Affected Software: Veeam Agent for Microsoft Windows

Affected Versions: 4.7.2

Vulnerability: This vulnerability involves a flaw in the file restoration process, enabling an attacker to achieve local privilege escalation by manipulating an administrator into restoring a malicious file. Successful exploitation requires local access and user interaction.

Business Impact

The ability to escalate privileges locally presents a severe risk to organizational security, potentially allowing an attacker to bypass standard access controls and gain administrative control over the host system. With a CVSS score of 7.3, this high-severity vulnerability could lead to complete system compromise, unauthorized data access, and the potential for lateral movement within the network.

Remediation Plan

Immediate Action: Update Veeam Agent for Microsoft Windows to the latest version provided by the vendor in KB4771 to patch the vulnerability.

Proactive Monitoring: Monitor system logs for unusual file restoration activities or unexpected administrative privilege changes on systems running the Veeam agent.

Compensating Controls: Enforce strict least privilege policies for administrative accounts and educate personnel on the risks associated with restoring files from untrusted or unverified sources.

Exploitation Status

Public Exploit Available: Unknown

Analyst Notes: As of November 1, 2025, there is no public information indicating active exploitation or a public proof-of-concept for this vulnerability. While the vulnerability requires social engineering and local access, its impact on system integrity makes timely patching a priority for all affected environments.

Analyst Recommendation

Given the potential for total system compromise through local privilege escalation, organizations should prioritize updating the Veeam Agent for Microsoft Windows immediately. Security teams must ensure that administrative workflows involving file restoration are conducted in accordance with secure practices to mitigate the risk of exploitation.