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CVE-2025-11680 (GCVE-0-2025-11680)

Vulnerability from cvelistv5 – Published: 2025-10-20 14:04 – Updated: 2025-10-20 14:34
VLAI
Title
Out-of-bounds Write in libwebsockets PNG parsing
Summary
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.
Severity
5.9 (Medium)
CVSS:4.0/AV:N/AC:H/AT:P/PR:N/UI:A/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N
SSVC
Exploitation: none Automatable: no Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2025-10-20 14:34 UTC
CWE
Assigner
References
Impacted products
Vendor Product Version CPE status
warmcat libwebsockets Affected: 4.0 , ≤ 4.4.2 (semver)
Affected: 4.0 , ≤ 4.3.6 (semver)
guessed Create a notification for this product.
Credits
Raffaele Bova at Nozomi Networks
Show details on NVD website
To clipboard 

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