CVE-2026-75141
HIGH
MEDIUM
Priority: 0.02
BB Relevance:
42/100
Published: 2026-08-19
Modified: 2026-10-27
First seen: 2026-10-29
Status: active
Attack Surface
Low Complexity
No Auth
Conf. Impact
Integ. Impact
CVSS Vector Breakdown
AV:
Local
AC:
Low
PR:
None
UI:
Passive
AT:
None
VC:
High
VI:
High
VA:
High
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.