CVE-2026-9787
HighCVSS 8.8Exploitation Probability (EPSS)
Elevated risk69th percentile — higher than 69% of all known CVEs
Summary
A vulnerability in Quest NetVault Backup allows remote code execution via command injection in the NVBULogDaemon process. The issue stems from improper validation of user-supplied data before using it in a system call, allowing an attacker to execute code in the SYSTEM context. Authentication is required, but the existing authentication mechanism can be bypassed.
Risk Assessment
An attacker can take over the backup server with full SYSTEM privileges, compromising the confidentiality, integrity, and availability of data and the entire infrastructure.
Recommendation
Apply the security update provided by Quest NetVault Backup immediately. Until then, restrict access to the NVBULogDaemon service to trusted hosts and networks only.
Original NVD description (English source)
Quest NetVault Backup NVBULogDaemon Command Injection Remote Code Execution Vulnerability. This vulnerability allows remote attackers to execute arbitrary code on affected installations of Quest NetVault Backup. Although authentication is required to exploit this vulnerability, the existing authentication mechanism can be bypassed. The specific flaw exists within the processing of NVBULogDaemon JSON-RPC messages. The issue results from the lack of proper validation of a user-supplied string before using it to execute a system call. An attacker can leverage this vulnerability to execute code in the context of SYSTEM. Was ZDI-CAN-27625.