Vulnerability Description
Out-of-bounds Read in lws_upng_emit_next_line in warmcat libwebsockets allows, when the LWS_WITH_UPNG flag is enabled during compilation and the HTML display stack is used, to read 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 height dimension.
Related Weaknesses (CWE)
References
- https://libwebsockets.org/git/libwebsockets/commit?id=7df24cca7144d7bc9233b6b0a7
- https://www.nozominetworks.com/labs/vulnerability-advisories-cve-2025-11679
FAQ
What is CVE-2025-11679?
CVE-2025-11679 is a documented vulnerability. Out-of-bounds Read in lws_upng_emit_next_line in warmcat libwebsockets allows, when the LWS_WITH_UPNG flag is enabled during compilation and the HTML display stack is used, to read past a heap allocat...
How severe is CVE-2025-11679?
CVSS scoring is not yet available for CVE-2025-11679. Check NVD for updates.
Is there a patch for CVE-2025-11679?
Check the references section above for vendor advisories and patch information. Review vendor security bulletins for remediation guidance.