High severity7.8NVD Advisory· Published Aug 19, 2026
CVE-2026-75141
CVE-2026-75141
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.
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Affected products
1Patches
Vulnerability mechanics
References
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