VULNERABILITY INTELLIGENCE
CVE-2025-11677
EPSS probability0.40%
CISA KEVNot currently listed
Published2025-10-20
Last modified2026-10-08
Description
Use After Free in WebSocket server implementation in lws_handshake_server in warmcat libwebsockets may allow an attacker, in specific configurations where the user provides a callback function that handles LWS_CALLBACK_HTTP_CONFIRM_UPGRADE, to achieve denial of service.
Weakness classification
- prodsec@nozominetworks.com: CWE-416