CVE-2025-51495 Affecting swupdate package, versions <2025.12+dfsg-1


Severity

Recommended
low

Based on default assessment until relevant scores are available.

Threat Intelligence

EPSS
0.42% (35th percentile)

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  • Snyk IDSNYK-DEBIANUNSTABLE-SWUPDATE-16722665
  • published17 May 2026
  • disclosed29 Sept 2025

Introduced: 29 Sep 2025

CVE-2025-51495  (opens in a new tab)

How to fix?

Upgrade Debian:unstable swupdate to version 2025.12+dfsg-1 or higher.

NVD Description

Note: Versions mentioned in the description apply only to the upstream swupdate package and not the swupdate package as distributed by Debian. See How to fix? for Debian:unstable relevant fixed versions and status.

An integer overflow vulnerability exists in the WebSocket component of Mongoose 7.5 thru 7.17. By sending a specially crafted WebSocket request, an attacker can cause the application to crash. If downstream vendors integrate this component improperly, the issue may lead to a buffer overflow.