Vulnerability Description
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.
Related Weaknesses (CWE)
References
- https://libwebsockets.org/git/libwebsockets/commit?id=2b715249f39291c86443b969a1
- https://www.nozominetworks.com/labs/vulnerability-advisories-cve-2025-11680
FAQ
What is CVE-2025-11680?
CVE-2025-11680 is a documented vulnerability. 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 b...
How severe is CVE-2025-11680?
CVSS scoring is not yet available for CVE-2025-11680. Check NVD for updates.
Is there a patch for CVE-2025-11680?
Check the references section above for vendor advisories and patch information. Review vendor security bulletins for remediation guidance.