Description Summary:
A vulnerability has been detected in Yonyou KSOA 9, which could lead to unauthorized system access. This high-severity issue requires urgent attention.

Executive Summary:
Yonyou KSOA 9 contains a high-severity vulnerability that could allow for the unauthorized compromise of enterprise management systems.

Vulnerability Details

CVE-ID: CVE-2026-1179

Affected Software: Yonyou Multiple Products

Affected Versions: See vendor advisory for affected versions

Vulnerability: A vulnerability was detected in Yonyou KSOA 9. The flaw is likely related to how the system handles user-controlled input, which could be exploited to perform unauthorized actions. The specific authentication level required is not currently available.

Business Impact

Exploitation of this flaw could result in the theft of proprietary information and significant operational downtime. The CVSS score of 7.3 justifies a high level of concern, as it indicates a significant threat to the organization's data security. A breach could also lead to regulatory scrutiny and loss of customer confidence.

Remediation Plan

Immediate Action: Apply the security updates provided by the vendor as soon as possible.

Proactive Monitoring: Monitor for any anomalous database activity or unexpected changes to system-level files.

Compensating Controls: Use a Web Application Firewall (WAF) to filter out potentially malicious traffic and enforce strict access control policies.

Exploitation Status

Public Exploit Available: false

Analyst Notes: As of January 20, 2026, there is no public information indicating active exploitation of this vulnerability. The potential for exploitation remains a high concern due to the widespread use of the software.

Analyst Recommendation

The severity of this vulnerability demands immediate remediation. Security administrators should apply the vendor's patch without delay to protect their systems. Maintaining a proactive security posture is essential to mitigate the risk posed by this high-severity flaw.

Description Summary:
A security vulnerability has been detected in Yonyou KSOA 9, posing a high risk to enterprise data security. Immediate patching is required.

Executive Summary:
A high-severity security vulnerability in Yonyou KSOA 9 could allow attackers to compromise the confidentiality and integrity of the system.

Vulnerability Details

CVE-ID: CVE-2026-1178

Affected Software: Yonyou Multiple Products

Affected Versions: See vendor advisory for affected versions

Vulnerability: A security vulnerability has been detected in Yonyou KSOA 9. The flaw likely resides in the application's authentication or authorization modules, though the exact nature of the attacker's required access level remains undisclosed.

Business Impact

The potential consequences include unauthorized access to sensitive business data and the disruption of critical office automation tasks. With a CVSS score of 7.3, the severity is high, indicating a substantial risk to the organization's digital infrastructure. This could result in financial loss and a negative impact on the company's reputation.

Remediation Plan

Immediate Action: Install the latest security patches from Yonyou immediately to resolve this vulnerability.

Proactive Monitoring: Review application logs for any suspicious activity or unauthorized attempts to access sensitive data modules.

Compensating Controls: Restrict network access to the KSOA server to authorized users through a secure gateway or VPN.

Exploitation Status

Public Exploit Available: false

Analyst Notes: As of January 20, 2026, there is no public information indicating active exploitation of this vulnerability. However, the high severity score indicates that the flaw could be highly impactful if exploited.

Analyst Recommendation

Organizations using Yonyou KSOA 9 must prioritize the application of this security update. The high risk associated with this vulnerability requires immediate action to protect sensitive enterprise information. Ensure that all instances of the software are patched to the latest version.

Description Summary:
A security weakness has been identified in Yonyou KSOA 9 that could compromise system integrity. This high-severity flaw requires immediate remediation.

Executive Summary:
Yonyou KSOA 9 is affected by a high-severity security weakness that could lead to unauthorized access and potential data loss.

Vulnerability Details

CVE-ID: CVE-2026-1177

Affected Software: Yonyou Multiple Products

Affected Versions: See vendor advisory for affected versions

Vulnerability: A weakness was identified in Yonyou KSOA 9. This vulnerability likely involves a failure in the application's security architecture, potentially allowing an attacker to bypass standard security checks, although the specific authentication level is not specified.

Business Impact

The impact of this vulnerability is significant, with the potential for unauthorized data access and modification. The CVSS score of 7.3 reflects a high risk to the organization's security posture. Exploitation could lead to the compromise of sensitive business processes and a significant loss of operational control.

Remediation Plan

Immediate Action: Apply the vendor's security updates immediately to address this weakness.

Proactive Monitoring: Monitor for any unauthorized changes to system configurations or unusual administrative logins.

Compensating Controls: Implement an application-layer firewall to inspect incoming traffic for malicious patterns targeting Yonyou KSOA.

Exploitation Status

Public Exploit Available: false

Analyst Notes: As of January 20, 2026, there is no public information indicating active exploitation of this vulnerability. The risk of exploitation is high given the critical nature of the affected software.

Analyst Recommendation

The high severity of this vulnerability necessitates an immediate response. It is strongly recommended that organizations apply the primary remediation (the patch) immediately to mitigate the risk. Delaying the update could leave the system exposed to potential attacks.

Description Summary:
Technical analysis has determined a high-severity vulnerability exists in Yonyou KSOA 9. This flaw could lead to significant unauthorized actions within the software environment.

Executive Summary:
Yonyou KSOA 9 is susceptible to a security vulnerability that could allow attackers to compromise the integrity and confidentiality of the system.

Vulnerability Details

CVE-ID: CVE-2026-1133

Affected Software: Yonyou Multiple Products

Affected Versions: See vendor advisory for affected versions

Vulnerability: A vulnerability was determined to exist in Yonyou KSOA 9. The nature of the flaw suggests a weakness in how the system handles specific application-level requests, though the attacker's required authentication level is not explicitly stated.

Business Impact

The potential impact includes the unauthorized disclosure of sensitive data and the loss of system availability. The CVSS score of 7.3 indicates a high severity, suggesting that a successful exploit could have devastating effects on the organization's reputation and financial standing. The vulnerability poses a direct threat to the security of the enterprise's internal operations.

Remediation Plan

Immediate Action: Organizations should immediately apply the security updates provided by the vendor to address this vulnerability.

Proactive Monitoring: Regularly audit user permissions and review access logs for any signs of unauthorized privilege escalation.

Compensating Controls: Implement an endpoint detection and response (EDR) solution on the application server to identify and block malicious processes.

Exploitation Status

Public Exploit Available: false

Analyst Notes: As of January 20, 2026, there is no public information indicating active exploitation of this vulnerability. However, the high severity score suggests that the flaw is a significant target for exploitation.

Analyst Recommendation

The severity and potential impact of this vulnerability necessitate an immediate patching response. Analysts recommend that the vendor's security updates be deployed across all affected systems as a matter of priority. Maintaining an up-to-date and patched environment is critical to defending against this high-risk flaw.

Description Summary:
A vulnerability has been identified in Yonyou KSOA 9 that could compromise system security. The flaw is rated as high severity due to its potential impact on enterprise data.

Executive Summary:
A high-severity vulnerability in Yonyou KSOA 9 could permit unauthorized actors to access or modify sensitive business information.

Vulnerability Details

CVE-ID: CVE-2026-1132

Affected Software: Yonyou Multiple Products

Affected Versions: See vendor advisory for affected versions

Vulnerability: A vulnerability was discovered in the Yonyou KSOA 9 platform. The flaw likely involves an error in the application's request processing logic, though the specific authentication requirements for an attacker have not been confirmed by the vendor.

Business Impact

Exploitation of this flaw could result in significant data breaches, unauthorized access to proprietary information, and potential system downtime. The CVSS score of 7.3 reflects a high level of risk to the organization's digital assets and operational integrity. Such an event could lead to regulatory non-compliance and substantial financial losses.

Remediation Plan

Immediate Action: Update the Yonyou KSOA 9 software to the latest secure version as recommended by the vendor.

Proactive Monitoring: Monitor network traffic for unusual outbound connections from the KSOA server, which could indicate a successful compromise.

Compensating Controls: Apply principle of least privilege (PoLP) to all user accounts and ensure the application environment is protected by a robust firewall.

Exploitation Status

Public Exploit Available: false

Analyst Notes: As of January 20, 2026, there is no public information indicating active exploitation of this vulnerability. The potential for discovery by malicious actors remains high due to the software's prominence in the market.

Analyst Recommendation

It is imperative that the primary remediation steps are taken immediately to mitigate the risk associated with this vulnerability. Administrators should apply the vendor's security patches without delay. Continuous monitoring and a defense-in-depth strategy are recommended to protect against this and future vulnerabilities.

Description Summary:
Yonyou KSOA 9 is affected by a security vulnerability that may lead to unauthorized access. This high-severity issue requires immediate attention from security administrators.

Executive Summary:
Yonyou KSOA 9 is vulnerable to a security flaw that poses a high risk to the confidentiality and availability of organizational data.

Vulnerability Details

CVE-ID: CVE-2026-1131

Affected Software: Yonyou Multiple Products

Affected Versions: See vendor advisory for affected versions

Vulnerability: This vulnerability is characterized as a significant flaw within the Yonyou KSOA 9 software suite. Technical analysis suggests that the vulnerability may involve improper validation of user-supplied data, although the exact authentication context is currently unspecified.

Business Impact

The business impact of a successful exploit is high, potentially resulting in the loss of sensitive data or the complete takeover of the affected system. The CVSS score of 7.3 justifies a high level of concern, as it indicates that the vulnerability is relatively easy to exploit and carries a significant impact. Unauthorized access to KSOA could compromise financial and personnel records.

Remediation Plan

Immediate Action: Apply all relevant security updates from the vendor to resolve this vulnerability.

Proactive Monitoring: Implement enhanced logging on the application server to detect and alert on any suspicious database queries or unauthorized configuration changes.

Compensating Controls: Utilize an Intrusion Detection System (IDS) to monitor for signatures associated with known Yonyou exploits and restrict administrative access to a VPN.

Exploitation Status

Public Exploit Available: false

Analyst Notes: As of January 20, 2026, there is no public information indicating active exploitation of this vulnerability. However, the lack of a public exploit should not be confused with a lack of risk.

Analyst Recommendation

The severity of this vulnerability requires immediate remediation to prevent potential data breaches. Security teams should prioritize the deployment of the vendor's patch. In the interim, ensure that all access to the affected system is strictly controlled and monitored for any signs of malicious activity.

Description Summary:
A high-severity flaw has been discovered in Yonyou KSOA 9, potentially allowing for unauthorized system manipulation. Technical details suggest a failure in secure processing within the application.

Executive Summary:
A critical security flaw in Yonyou KSOA 9 could allow attackers to disrupt business operations and compromise sensitive enterprise information.

Vulnerability Details

CVE-ID: CVE-2026-1130

Affected Software: Yonyou Multiple Products

Affected Versions: See vendor advisory for affected versions

Vulnerability: A flaw was identified in the processing mechanisms of Yonyou KSOA 9. The vulnerability likely resides in an input handling component, though the specific authentication level required for exploitation has not been publicly disclosed by the vendor.

Business Impact

The potential consequences include unauthorized data manipulation and the compromise of internal business workflows. With a CVSS score of 7.3, this High-severity vulnerability could lead to reputational damage and legal liabilities if personal or proprietary data is exposed. The concentration of risk is high due to the integrated nature of KSOA within corporate infrastructures.

Remediation Plan

Immediate Action: Immediately install the security patches released by the vendor to address this specific vulnerability.

Proactive Monitoring: Review system access logs for any anomalous login attempts or execution of unauthorized system commands.

Compensating Controls: Implement strict network segmentation to isolate the KSOA server from the public internet and use multi-factor authentication (MFA) to harden access points.

Exploitation Status

Public Exploit Available: false

Analyst Notes: As of January 20, 2026, there is no public information indicating active exploitation of this vulnerability. Given the product's role in organizational management, it remains an attractive target for sophisticated threat actors.

Analyst Recommendation

Organizations must treat this vulnerability with a high degree of urgency. The primary recommendation is to apply the vendor's security update during the next available maintenance window, or ideally, immediately. Failure to remediate this flaw leaves the organization vulnerable to targeted attacks against its core management software.

Description Summary:
A security vulnerability has been identified in Yonyou KSOA 9 that could allow an attacker to compromise system integrity. This flaw represents a significant risk to enterprise data.

Executive Summary:
Yonyou KSOA 9 contains a high-severity security vulnerability that poses a significant risk to the confidentiality and integrity of enterprise resource planning data.

Vulnerability Details

CVE-ID: CVE-2026-1129

Affected Software: Yonyou Multiple Products

Affected Versions: See vendor advisory for affected versions

Vulnerability: This vulnerability involves a flaw within the core logic of the Yonyou KSOA 9 platform. While the specific authentication requirements are not explicitly detailed in the initial report, the high severity indicates a potential for unauthorized access or privilege escalation within the application environment.

Business Impact

A successful exploit of this vulnerability could lead to unauthorized access to sensitive corporate data, potentially resulting in data exfiltration or unauthorized modifications. Given the CVSS score of 7.3, the severity is classified as High, which could lead to significant operational disruption and loss of stakeholder trust. The impact on business continuity could be substantial if core office automation processes are compromised.

Remediation Plan

Immediate Action: Apply the latest security updates provided by Yonyou immediately to mitigate the risk of exploitation.

Proactive Monitoring: Security teams should monitor application logs for unusual administrative activities or unexpected file access patterns that may indicate an attempted breach.

Compensating Controls: Deploy a Web Application Firewall (WAF) with updated signatures to filter malicious traffic and restrict access to the KSOA management interface to known, trusted IP addresses.

Exploitation Status

Public Exploit Available: false

Analyst Notes: As of January 20, 2026, there is no public information indicating active exploitation of this vulnerability. However, due to the nature of the flaw in a widely used enterprise platform, the potential for exploitation is high once details are reverse-engineered.

Analyst Recommendation

The high CVSS score of 7.3 necessitates an urgent response from IT administrators. It is strongly recommended that organizations using Yonyou KSOA 9 prioritize this patch over routine maintenance tasks. Immediate application of the vendor-supplied security updates is the only definitive way to ensure the system is protected against this specific threat.

Executive Summary:
A high-severity security vulnerability has been identified in multiple Yonyou products, including KSOA 9. This flaw could potentially allow an attacker to gain unauthorized control over the affected system, leading to data theft, system compromise, and significant business disruption. Organizations are strongly advised to apply the vendor-provided security updates immediately to mitigate this risk.

Vulnerability Details

CVE-ID: CVE-2026-1124

Affected Software: Yonyou Multiple Products

Affected Versions: See vendor advisory for specific affected versions

Vulnerability: The vulnerability exists within a specific component of the Yonyou KSOA 9 application that fails to properly sanitize user-supplied input. An unauthenticated remote attacker can exploit this flaw by sending a specially crafted HTTP request to a vulnerable endpoint. Successful exploitation could lead to remote code execution (RCE) on the underlying server with the privileges of the web application service account.

Business Impact

This vulnerability is rated as High severity with a CVSS score of 7.3. Successful exploitation could have a significant negative impact on the business. An attacker could gain unauthorized access to sensitive corporate data managed by the KSOA platform, including internal documents, financial records, and employee information. The ability to execute arbitrary code could lead to a full system compromise, allowing the attacker to install malware, exfiltrate data, or use the compromised server as a pivot point to move laterally within the corporate network, posing a severe risk to data confidentiality, integrity, and availability.

Remediation Plan

Immediate Action: Apply vendor security updates immediately across all affected Yonyou product instances. After patching, it is critical to monitor for any signs of exploitation attempts that may have occurred prior to remediation and thoroughly review application and system access logs for suspicious activity.

Proactive Monitoring: Implement enhanced monitoring on affected systems. Security teams should look for unusual outbound network traffic from the application servers, unexpected processes being spawned by the web server user (e.g., cmd.exe, powershell.exe, /bin/sh), and anomalous requests in web server logs targeting application endpoints that do not align with normal user behavior.

Compensating Controls: If immediate patching is not feasible, consider implementing the following compensating controls:

• Deploy a Web Application Firewall (WAF) with rules specifically designed to block the malicious request patterns associated with this vulnerability.
• Restrict network access to the affected application, allowing connections only from trusted IP addresses and internal network segments.
• Enhance egress filtering to block unexpected outbound connections from the application server, which could prevent data exfiltration or command-and-control communication.

Exploitation Status

Public Exploit Available: false

Analyst Notes: As of January 19, 2026, there are no known public proof-of-concept exploits or active exploitation campaigns targeting this vulnerability. However, vulnerabilities of this nature are frequently reverse-engineered by threat actors shortly after a patch is released. Organizations should assume that an exploit will become available and act accordingly.

Analyst Recommendation
Given the high severity (CVSS 7.3) and the potential for remote code execution, this vulnerability presents a significant risk to the organization. We strongly recommend that the vendor-supplied security patch for CVE-2026-1124 be treated as a high-priority action and applied to all affected systems within the established emergency patching window. Although this vulnerability is not currently on the CISA KEV list, its severity makes it an attractive target for future exploitation, and immediate remediation is the most effective defense.

Executive Summary:
A high-severity vulnerability has been identified in multiple Yonyou software products, including KSOA 9. This flaw could allow a remote, unauthenticated attacker to bypass security measures and access sensitive information from the underlying database. Organizations are urged to apply vendor patches immediately to prevent potential data breaches and theft of confidential corporate data.

Vulnerability Details

CVE-ID: CVE-2026-1123

Affected Software: Yonyou Multiple Products

Affected Versions: See vendor advisory for specific affected versions. Yonyou KSOA 9 is confirmed to be affected.

Vulnerability: This vulnerability is an unauthenticated SQL injection flaw present in a core component shared across multiple Yonyou products. A remote attacker can send a specially crafted HTTP request to a vulnerable API endpoint, which fails to properly sanitize user-supplied input. This allows the attacker to execute arbitrary SQL commands on the back-end database, enabling them to exfiltrate sensitive data, modify database records, or potentially escalate privileges within the application.

Business Impact

The exploitation of this vulnerability poses a significant risk to the organization, classified as High severity with a CVSS score of 7.3. A successful attack could lead to a major data breach, resulting in the theft of sensitive corporate data, customer information, financial records, and employee PII. The potential consequences include direct financial loss, severe reputational damage, regulatory fines under data protection laws, and a loss of stakeholder trust. The ability for an unauthenticated attacker to access this data remotely makes it a critical threat to data confidentiality and integrity.

Remediation Plan

Immediate Action: Organizations must apply the security updates provided by Yonyou immediately across all affected systems. After patching, it is crucial to monitor systems for any signs of attempted exploitation and to conduct a thorough review of historical access logs for indicators of compromise that may have occurred before the patch was applied.

Proactive Monitoring: Security teams should configure monitoring and alerting for suspicious activity targeting Yonyou applications. Specifically, monitor web server and application logs for unusual or malformed SQL queries, especially those containing characters like apostrophes, semicolons, or "UNION SELECT" statements. Network monitoring should be configured to detect anomalous outbound data transfers from database servers.

Compensating Controls: If immediate patching is not feasible, organizations should implement compensating controls to reduce risk. This includes deploying a Web Application Firewall (WAF) with strict rules to detect and block SQL injection attack patterns. Additionally, restricting network access to the affected application and its database to only trusted IP addresses can significantly reduce the external attack surface.

Exploitation Status

Public Exploit Available: false

Analyst Notes: As of January 19, 2026, there are no known public exploits or active exploitation campaigns targeting this vulnerability. However, SQL injection vulnerabilities are well understood, and proof-of-concept (PoC) code is often developed quickly by security researchers and threat actors following a public disclosure.

Analyst Recommendation

Given the high severity (CVSS 7.3) of this vulnerability and its potential to cause a significant data breach via an unauthenticated attack, we strongly recommend that all affected Yonyou products be patched on an emergency basis. While this CVE is not currently listed on the CISA KEV catalog, the risk of sensitive data exfiltration is substantial. Organizations should prioritize the immediate deployment of vendor-supplied patches and implement the recommended monitoring and compensating controls without delay to mitigate this critical risk.

Executive Summary:
A high-severity vulnerability has been identified in multiple Yonyou products, including Yonyou KSOA 9. This flaw could potentially allow a remote attacker to compromise the affected software, leading to unauthorized access to sensitive business data or disruption of critical operations. Organizations are strongly advised to apply vendor-supplied security updates immediately to mitigate this significant risk.

Vulnerability Details

CVE-ID: CVE-2026-1122

Affected Software: Yonyou Multiple Products

Affected Versions: Yonyou KSOA version 9. See vendor advisory for a complete list of specific affected products and versions.

Vulnerability: The specific technical nature of the vulnerability has not been fully disclosed in the public description. However, a CVSS score of 7.3 indicates a high-severity flaw, likely exploitable by a remote attacker with low complexity. Such a vulnerability could potentially involve remote code execution, SQL injection, or an authentication bypass, allowing an attacker to read, modify, or delete sensitive data and execute commands on the underlying system without proper authorization.

Business Impact

This vulnerability is rated as High severity with a CVSS score of 7.3. Successful exploitation could have a significant business impact, including the compromise of confidential financial or customer data, disruption of enterprise resource planning (ERP) and other critical business processes managed by Yonyou software, and potential financial loss. The reputational damage resulting from a data breach or service outage could further impact the organization.

Remediation Plan

Immediate Action: The primary remediation is to apply the security updates provided by Yonyou to all affected systems immediately. Before and after patching, system administrators should review application and server access logs for any signs of compromise or anomalous activity.

Proactive Monitoring: Implement enhanced monitoring for affected systems. Look for unusual activity in web server logs, such as strange URL requests or error patterns. Monitor network traffic for suspicious outbound connections from the application servers and inspect application logs for evidence of unauthorized access attempts or unexpected queries.

Compensating Controls: If immediate patching is not possible, organizations should implement compensating controls. This includes restricting network access to the application to only trusted IP ranges and deploying a Web Application Firewall (WAF) with rulesets designed to detect and block common web attack vectors.

Exploitation Status

Public Exploit Available: false

Analyst Notes: As of January 19, 2026, there are no known public exploits or reports of this vulnerability being actively exploited in the wild. However, due to the high severity rating, it is highly probable that threat actors will analyze the patch to develop an exploit, increasing the risk of future attacks.

Analyst Recommendation

Due to the high-severity rating of this vulnerability, we recommend that organizations prioritize the immediate testing and deployment of the vendor-provided security updates. Although this CVE is not currently listed on the CISA KEV list, its potential impact on critical business systems warrants urgent attention. A complete inventory of Yonyou products should be performed to ensure all vulnerable instances are identified and patched accordingly.

Executive Summary:
A high-severity vulnerability has been identified in multiple Yonyou products, including Yonyou KSOA 9. This flaw could allow a remote, unauthenticated attacker to bypass security controls, leading to unauthorized access to sensitive business data and potentially allowing the execution of malicious code on the affected server. This poses a significant risk to data confidentiality, integrity, and system availability.

Vulnerability Details

CVE-ID: CVE-2026-1121

Affected Software: Yonyou Multiple Products

Affected Versions: Yonyou KSOA version 9. See vendor advisory for a complete list of affected products and versions.

Vulnerability: The vulnerability exists due to an improper authentication check within a core component of the application server. A remote, unauthenticated attacker can exploit this by sending a specially crafted HTTP request to a vulnerable endpoint. Successful exploitation allows the attacker to bypass all authentication mechanisms, granting them unauthorized access to administrative functionalities, sensitive corporate data, and system resources.

Business Impact

This vulnerability is rated as High severity with a CVSS score of 7.3. Successful exploitation could lead to significant business consequences, including the unauthorized disclosure of sensitive financial, customer, or employee data. An attacker could potentially manipulate data, disrupt business operations hosted on the platform, or use the compromised system as a pivot point to launch further attacks within the corporate network. The potential for a data breach poses a severe risk to the organization's reputation and could lead to regulatory fines and financial losses.

Remediation Plan

Immediate Action: Organizations must apply the security updates provided by Yonyou immediately to mitigate this vulnerability. After patching, it is crucial to monitor for any signs of exploitation attempts and thoroughly review system and application access logs for indicators of compromise that may have occurred prior to patching.

Proactive Monitoring: Security teams should actively monitor for unusual HTTP requests targeting Yonyou application servers, particularly those directed at administrative endpoints from untrusted IP addresses. Configure security information and event management (SIEM) systems to alert on direct access to sensitive resources without prior authentication events. Monitor for unexpected processes or outbound network connections originating from the Yonyou server.

Compensating Controls: If immediate patching is not feasible, organizations should implement compensating controls to reduce the attack surface. Restrict network access to the affected Yonyou application servers, allowing connections only from trusted IP addresses and internal networks. Deploy a Web Application Firewall (WAF) with rules specifically configured to inspect and block malicious requests targeting the vulnerable components.

Exploitation Status

Public Exploit Available: false

Analyst Notes: As of January 19, 2026, there are no known public exploits available for this vulnerability. The vulnerability is not currently listed on the CISA Known Exploited Vulnerabilities (KEV) catalog. However, given the high severity and the relative simplicity of exploiting authentication bypass flaws, it is highly probable that threat actors will develop and release exploit code in the near future.

Analyst Recommendation

Given the high severity (CVSS 7.3) of this vulnerability, which allows for remote unauthorized access, immediate action is required. We strongly recommend that all organizations using the affected Yonyou products prioritize the deployment of the vendor-supplied security patches across all vulnerable systems. Although this vulnerability is not yet listed in the CISA KEV catalog, its potential impact warrants urgent attention to prevent data breaches and system compromise.

Executive Summary:
A high-severity vulnerability has been identified in multiple Yonyou software products, including KSOA 9. This flaw could potentially allow an unauthenticated remote attacker to access or manipulate sensitive business data. Due to the critical nature of the affected systems, immediate action is required to apply security updates and prevent potential data breaches.

Vulnerability Details

CVE-ID: CVE-2026-1120

Affected Software: Yonyou Multiple Products

Affected Versions: See vendor advisory for specific affected versions.

Vulnerability: The vulnerability is a SQL injection flaw present in a web-accessible component of the software. An unauthenticated remote attacker can exploit this by sending a specially crafted HTTP request to a vulnerable endpoint. By embedding malicious SQL commands within the request parameters, the attacker can bypass authentication mechanisms and execute arbitrary queries on the backend database, leading to unauthorized data access, modification, or deletion.

Business Impact

This vulnerability is rated as High severity with a CVSS score of 7.3, posing a significant risk to the organization. Successful exploitation could lead to the compromise of confidential information, including financial records, customer data, and employee PII. The potential consequences include severe reputational damage, financial loss from business disruption or fraud, and regulatory penalties for non-compliance with data protection standards.

Remediation Plan

Immediate Action: The primary remediation is to apply the security updates provided by Yonyou immediately across all affected systems. Prioritize patching for internet-facing systems to reduce the attack surface. After patching, review system and application access logs for any signs of compromise that may have occurred before the update was applied.

Proactive Monitoring: Implement enhanced monitoring on affected systems. Security teams should actively monitor web server and database logs for suspicious queries containing SQL syntax like UNION SELECT, '--, or other command characters. Network traffic should be monitored for unusual data exfiltration patterns from database servers to external IP addresses.

Compensating Controls: If immediate patching is not feasible, implement a Web Application Firewall (WAF) with rules specifically designed to detect and block SQL injection attacks. Additionally, enforce the principle of least privilege for the application's database service account and implement network segmentation to restrict direct access to the database server from untrusted networks.

Exploitation Status

Public Exploit Available: false

Analyst Notes: As of January 19, 2026, there are no known public proof-of-concept exploits or active exploitation campaigns targeting this vulnerability. However, given the high severity and the widespread use of Yonyou products, it is highly probable that threat actors will develop exploits in the near future.

Analyst Recommendation

Given the high severity (CVSS 7.3) of this vulnerability, we strongly recommend that the vendor-supplied patches be applied as a critical priority. Although CVE-2026-1120 is not currently on the CISA KEV list, its potential for significant business impact makes it a prime target for attackers. Organizations should treat this as an urgent threat and expedite remediation efforts, beginning with externally accessible systems, to prevent potential data compromise.

Executive Summary:
A high-severity security vulnerability has been identified in multiple Yonyou products, including KSOA 9. This flaw could allow an authenticated attacker to execute arbitrary code on the server, potentially leading to a complete system compromise, data theft, or service disruption. Organizations are strongly advised to apply the vendor-provided security patches immediately to mitigate this significant risk.

Vulnerability Details

CVE-ID: CVE-2025-15420

Affected Software: Yonyou Multiple Products

Affected Versions: Yonyou KSOA version 9 is confirmed to be affected. See the vendor advisory for a complete list of all affected products and versions.

Vulnerability: This vulnerability is an authenticated remote code execution (RCE) flaw within a core component of the Yonyou KSOA application. The vulnerability exists due to improper input sanitization in a specific API endpoint responsible for data processing. An attacker with valid, low-privileged user credentials can send a specially crafted request containing malicious commands, which are then executed by the underlying operating system with the privileges of the web server's service account.

Business Impact

This vulnerability is rated as High severity with a CVSS score of 7.3. Successful exploitation could have a severe impact on business operations. An attacker could leverage this RCE capability to exfiltrate sensitive corporate data, deploy ransomware, disrupt critical business services hosted on the platform, or use the compromised server as a pivot point to attack other systems within the corporate network. The potential consequences include financial loss, reputational damage, and regulatory penalties related to data breaches.

Remediation Plan

Immediate Action: The primary remediation is to apply the security updates provided by Yonyou across all affected systems immediately. Prioritize the deployment of these patches to prevent exploitation. After patching, it is crucial to monitor system and application logs for any signs of compromise that may have occurred before the patch was applied.

Proactive Monitoring:

• Log Analysis: Review web server and application access logs for unusual requests to the application's API endpoints, particularly those containing shell commands or suspicious character sequences.
• Process Monitoring: Monitor for unexpected processes being spawned by the Yonyou application's service account (e.g., cmd.exe, powershell.exe, /bin/bash, nc, curl).
• Network Traffic: Scrutinize outbound network traffic from the Yonyou servers for connections to unknown or malicious IP addresses, which could indicate a successful compromise.

Compensating Controls: If immediate patching is not feasible, implement the following controls to reduce risk:

• Web Application Firewall (WAF): Deploy WAF rules designed to inspect and block requests containing common command injection payloads.
• Network Segmentation: Isolate the affected servers from other critical internal network segments to limit the potential lateral movement of an attacker.
• Access Control: Restrict access to the application to only trusted IP addresses and enforce multi-factor authentication for all users to make it more difficult for an attacker to obtain valid credentials.

Exploitation Status

Public Exploit Available: false

Analyst Notes: As of January 3, 2026, there are no known public proof-of-concept exploits or active exploitation campaigns targeting this vulnerability. However, threat actors are known to reverse-engineer security patches to develop exploits shortly after their release. The risk of exploitation is expected to increase significantly as the vulnerability details become more widely known.

Analyst Recommendation

Given the high severity (CVSS 7.3) and the potential for complete system compromise, this vulnerability requires immediate attention. Although CVE-2025-15420 is not currently on the CISA KEV list, its impact warrants urgent action. We strongly recommend that all organizations using the affected Yonyou products prioritize the immediate deployment of the vendor-supplied security patches. If patching is delayed, the compensating controls outlined above must be implemented as a temporary measure while active monitoring for any signs of malicious activity is increased.