CVE-2026-125172
FFmpeg through 9.0.2 Out-of-Bounds Read via libxevd EVC NAL Length
CVSS Score
6.1
EPSS Score
0.0%
EPSS Percentile
0th
FFmpeg through 9.0.2 contains an out-of-bounds read vulnerability in libxevd_receive_frame() in libavcodec/libxevd.c that fails to validate NAL unit length prefixes against remaining packet data. Attackers can supply crafted EVC media with oversized 4-byte NAL length prefixes, causing libxevd to read past the packet buffer, crashing the application or exposing adjacent heap memory.
| CWE | CWE-125 |
| Vendor | ffmpeg |
| Product | ffmpeg |
| Published | Nov 9, 2026 |
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CVSS v3 Breakdown
CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:L/I:N/A:H Attack Vector
Local
Attack Complexity
Low
Privileges Required
None
User Interaction
Required
Scope
Unchanged
Confidentiality
Low
Integrity
None
Availability
High
Affected Versions
FFmpeg / FFmpeg
7.0 ≤ 9.0.2
References
code.ffmpeg.org: https://code.ffmpeg.org/FFmpeg/FFmpeg/pulls/25416 github.com: https://github.com/FFmpeg/FFmpeg/commit/e06b3953d4253f8b56271628ba4083fde96aeadb github.com: https://github.com/FFmpeg/FFmpeg/blob/n9.0.2/libavcodec/libxevd.c#L355 github.com: https://github.com/FFmpeg/FFmpeg vulncheck.com: https://www.vulncheck.com/advisories/ffmpeg-through-9.0.2-out-of-bounds-read-via-libxevd-evc-nal-length
Credits
Joshua Rogers (AISLE Research) Michael Niedermayer