Vulnerability Description
FFmpeg before commit acf5d7c contains a heap buffer overflow in the hvcC box writer. When writing an HEVC configuration record with more NAL units of a single type than the count field can represent, the NAL unit count overflows, causing a heap buffer overflow. A crafted HEVC input file triggers the overflow during muxing.
CVSS Score
HIGH
Related Weaknesses (CWE)
References
- https://code.ffmpeg.org/FFmpeg/FFmpeg/commit/acf5d7cdc1f9ae8752c23e1ea8d7f355ed7
- https://code.ffmpeg.org/FFmpeg/FFmpeg/pulls/24088
- https://www.vulncheck.com/advisories/ffmpeg-heap-buffer-overflow-in-hvcc-box-wri
FAQ
What is CVE-2026-75141?
CVE-2026-75141 is a vulnerability with a CVSS score of 7.8 (HIGH). FFmpeg before commit acf5d7c contains a heap buffer overflow in the hvcC box writer. When writing an HEVC configuration record with more NAL units of a single type than the count field can represent, ...
How severe is CVE-2026-75141?
CVE-2026-75141 has been rated HIGH with a CVSS base score of 7.8/10. Review the CVSS metrics above for detailed severity breakdown.
Is there a patch for CVE-2026-75141?
Check the references section above for vendor advisories and patch information. Review vendor security bulletins for remediation guidance.