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 7.8EPSS 0.13699999999999998%Risk 0.79
View source- Published
- 2026-08-19 17:21:12
- Affected versions
- unknown
- Type
- Library
- Last modified
- 2026-08-21 04:18:19
- Vector
- CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H