Quest NetVault Backup NVBULogDaemon Command Injection Remote Code Execution Vulnerability
Description
Quest NetVault Backup NVBULogDaemon Command Injection Remote Code Execution Vulnerability
AI Analyst Comment
Remediation
Apply security patches immediately for internet-facing systems. Monitor for exploitation attempts and review access logs.
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VENDOR: Quest
PRODUCT: NetVault Backup
AFFECTED_VERSIONS: See vendor advisory for affected versions
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Description Summary:
A command injection vulnerability in the NVBULogDaemon component of Quest NetVault Backup enables remote attackers to execute arbitrary system commands.
Executive Summary:
A remote command injection vulnerability in the Quest NetVault Backup NVBULogDaemon component enables attackers to execute unauthorized commands on the host server.
Vulnerability Details
CVE-ID: CVE-2026-9787
Affected Software: Quest NetVault Backup
Affected Versions: See vendor advisory for affected versions
Vulnerability: The flaw exists within the NVBULogDaemon, which fails to properly validate input before passing it to the system shell. This allows an unauthenticated attacker to inject and execute arbitrary commands, leading to full system compromise.
Business Impact
With a CVSS score of 8.8, this vulnerability poses a severe threat to the confidentiality, integrity, and availability of the host server. A compromise of the backup server could lead to the exposure of sensitive backup data, manipulation of recovery points, or the deployment of secondary payloads within the internal network.
Remediation Plan
Immediate Action: Identify and patch all instances of NetVault Backup according to the manufacturer’s forthcoming security guidance.
Proactive Monitoring: Inspect system process logs for irregular command executions or the spawning of unexpected shells from the NVBULogDaemon process.
Compensating Controls: Utilize endpoint detection and response (EDR) solutions to block unauthorized child processes launched by backup services and limit service account privileges.
Exploitation Status
Public Exploit Available: false
Analyst Notes: As of June 25, 2026, there is no public information indicating active exploitation of this vulnerability. However, due to the nature of the flaw, the potential for exploitation is high.
Analyst Recommendation
The ability to perform remote command injection makes this a high-priority risk for all environments utilizing Quest NetVault Backup. IT teams should ensure that all backup infrastructure is isolated from public-facing networks and apply vendor patches immediately upon release to remediate the underlying command injection vector.