ZDI-26-376: Quest NetVault Backup NVBULogDaemon Command Injection Remote Code Execution Vulnerability
Source Zero Day Initiative
Not known to be exploited.
Data as of 6 Nov 2026, 23:24 UTC
Rated High by Threat Radar from the Zero Day Initiative text · No CVSS score from NVD or the CNA
- EPSS
- 5.4% chance of exploitation in 30 days – higher than 92% of CVEsExploit Prediction Scoring System: the likelihood attackers will use this flaw soon.
Exploitation evidence
Disclosed: evidence found.
Public on cve.org; its publication date is not in this record
Detectable: no evidence on record.
No public nuclei template indexed
Weaponized: no evidence on record.
No public exploit code indexed in Metasploit or Exploit-DB
Exploited in the wildExploited: no evidence on record.
Not in CISA KEV and no source reports exploitation
Observed by OffSeq MirageSeen by Mirage: no evidence on record.
No attack traffic recorded by OffSeq Mirage sensors
A missing step is not evidence of safety. Sources: cve.org (opens in a new tab), the Metasploit, Exploit-DB and nuclei-templates index as of 7 Nov 2026.
What to do
AI-suggested
Quest has issued an update to correct this vulnerability. Applying the official vendor update is the recommended remediation. Patch status is confirmed by the vendor advisory linked in the source content.
Description
A command injection vulnerability exists in Quest NetVault Backup's NVBULogDaemon component that allows remote attackers to execute arbitrary code with SYSTEM privileges. Although exploitation requires authentication, the authentication mechanism can be bypassed. Quest has issued an update to address this vulnerability.