{"id":"CVE-2026-13270","title":"Quest NetVault Backup nvpmgr Integer Underflow Denial-of-Service Vulnerability","summary":"Quest NetVault Backup nvpmgr Integer Underflow Denial-of-Service Vulnerability. This vulnerability allows remote attackers to create a denial-of-service condition on affected installations of Quest NetVault Backup. Authentication is not …","severity":"high","cvss":7.5,"cvssVector":"CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H","cvssSource":"cna","cwe":["CWE-191"],"vendor":"Quest","product":"NetVault Backup","affected":["netvault_backup 14.0.2.4"],"published":"2026-11-12","updated":"2026-11-12","sourceUpdated":"2026-11-12T02:49:34.234Z","source":"CVEORG","sourceUrl":"https://www.cve.org/CVERecord?id=CVE-2026-13270","references":[{"url":"https://www.zerodayinitiative.com/advisories/ZDI-26-889/","label":"ZDI-26-889"}],"tags":["cve.org"],"zeroDay":true,"ingestedAt":"2026-11-12T03:35:25.466Z","epss":0.00799,"epssPercentile":0.57023,"slug":"CVE-2026-13270","body":"## Overview\n\nQuest NetVault Backup nvpmgr Integer Underflow Denial-of-Service Vulnerability. This vulnerability allows remote attackers to create a denial-of-service condition on affected installations of Quest NetVault Backup. Authentication is not required to exploit this vulnerability.\n\nThe specific flaw exists within the nvpmgr service, which listens on UDP port 20031 by default. The issue results from the lack of proper validation of user-supplied data, which can result in an integer underflow before allocating a buffer. An attacker can leverage this vulnerability to create a denial-of-service condition on the system. Was ZDI-CAN-28744.\n\n## Affected\n\n- `netvault_backup 14.0.2.4`\n\n## Remediation\n\nRefer to the linked advisories for vendor-supplied fixes and affected version ranges.","depth":"abyssal","depthScore":66,"depthScoreParts":{"impact":41.3,"likelihood":0.2,"exploitation":25,"ransomware":0},"changes":[]}