# CVE-2026-13270: Quest NetVault Backup nvpmgr Integer Underflow Denial-of-Service Vulnerability

Status: published. Published: 2026-11-12. Updated: 2026-11-12.

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 required to exploit this vulnerability.

The 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.

## Remediation

No remediation reported in collected sources

## Affected products and versions

- Quest / NetVault Backup: 14.0.2.4 (affected). Source: CNA: zdi

## Severity and prioritization

- CVSS 3.0: 7.5 (high); CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H; source: CNA: zdi

- CISA KEV: No listing in collected sources

- EPSS: Not available

- SSVC: Not available

- Weaknesses: CWE-191

## Exploit evidence

No exploit evidence in collected sources. This is not proof of no exploitation.

## References

- https://www.zerodayinitiative.com/advisories/ZDI-26-889/ (CNA: zdi; x_research-advisory)

## Provenance

- CNA: zdi: https://www.cve.org/CVERecord?id=CVE-2026-13270; retrieved 2026-11-12; source updated 2026-11-12

Revision: c8e9762fa00a7d70c6fc606f119b66b8a01a39b89d29e217ef8a3b9a74ff8fea

Canonical: https://y2.dev/cve/CVE-2026-13270

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