ZDI-26-889: Quest NetVault Backup nvpmgr Integer Underflow Denial-of-Service Vulnerability
Source Zero Day Initiative
Not known to be exploited.
Data as of 6 Nov 2026, 22:41 UTC
Rated High by Zero Day Initiative · CVSS not yet scored by NVD
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 6 Nov 2026.
What to do
Description
A denial-of-service vulnerability exists in Quest NetVault Backup due to an integer underflow in the nvpmgr component. This flaw can be exploited remotely without authentication, causing affected systems to become unavailable. The vulnerability has been assigned CVE-2026-13270 and carries a high severity rating.