Description (CNA)
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.
Affected (CNA)
| Vendor / product | Versions |
|---|---|
| warmcat / libwebsockets | affected 4.0 through 4.4.2; affected 4.0 through 4.3.6 |
CWE
CWE-787
References
- https://libwebsockets.org/git/libwebsockets/commit?id=2b715249f39291c86443b969a1088d59b6a89b78
- https://www.nozominetworks.com/labs/vulnerability-advisories-cve-2025-11680
ADP enrichment
No English description supplied.
No references supplied.