Linux · Debian · Security advisory · October 20, 2025

DEBIAN-CVE-2025-11677: libwebsockets security update

DEBIAN-CVE-2025-11677, released October 20, 2025, fixes 1 CVE in libwebsockets. None of them is reported as exploited. Patch Radar priority: Routine.

Routine
CVEs closed
1
None rated Critical
Exploited
0
None reported
Highest CVSS
n/a
No CVSS score published
Highest EPSS
0.0041
34th percentile

Fixed package versions

ProductReleaseFixed in
libwebsocketsDebian 13.5 (trixie)4.3.5-1+deb13u1
libwebsocketsDebian 144.3.5-3

CVEs this fix closes

PriorityCVETitleCVSSEPSSExploitation
Routine CVE-2025-11677 libwebsockets-evlib-ev: Use After Free in WebSocket server implementation in lws_handshake_server in warmcat libwebsockets may allow an attac...n/a 0.0041 None reported
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