Out-of-bounds Write Affecting libwebsockets package, versions *


Severity

Recommended
0.0
low
0
10

Based on Red Hat Enterprise Linux security rating.

Threat Intelligence

EPSS
0.39% (34th percentile)

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  • Snyk IDSNYK-RHEL8-LIBWEBSOCKETS-13650245
  • published21 Oct 2025
  • disclosed20 Oct 2025

Introduced: 20 Oct 2025

CVE-2025-11680  (opens in a new tab)
CWE-787  (opens in a new tab)

How to fix?

There is no fixed version for RHEL:8 libwebsockets.

NVD Description

Note: Versions mentioned in the description apply only to the upstream libwebsockets package and not the libwebsockets package as distributed by RHEL. See How to fix? for RHEL:8 relevant fixed versions and status.

Out-of-bounds Write in unfilter_scanline in warmcat libwebsockets allows, when the LWS_WITH_UPNG flag is enabled during compilation and the HTML display stack is used, to write past a heap allocated buffer possibly causing a crash, when the user visits an attacker controlled website that contains a crafted PNG file with a big width value that causes an integer overflow which value is used for determining the size of a heap allocation.

CVSS Base Scores

version 3.1