Linux · Security advisory · November 17, 2025
DLA-4373-1: libwebsockets security update
DLA-4373-1, released November 17, 2025, fixes 1 CVE in libwebsockets (version 4.0.20-2+deb11u1). None of them is reported as exploited. Patch Radar priority: Routine. The product is no longer supported.
RoutineUnsupported product
CVEs closed
1
None rated Critical
Exploited
0
None reported
Exploitation more likely
0
Vendor assessment
Highest EPSS
0.0041
34th percentile
Fixed package versions
| Product | Release | Fixed in |
|---|---|---|
| libwebsockets | Debian 11.6 (bullseye) | 4.0.20-2+deb11u1 |
CVEs this fix closes
| Priority | CVE | Title | Impact | CVSS | EPSS | Exploitation |
|---|---|---|---|---|---|---|
| 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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