CVE-2026-125252

medium

Description

FFmpeg through 9.0.2 contains a memory leak vulnerability in libavcodec/vaapi_decode.c that allows attackers to exhaust memory by supplying streams with slice parse errors. Attackers can craft H.264 or other VAAPI-decoded video where later slices fail to parse on every frame, continuously leaking VA parameter and slice buffers plus driver and heap memory.

References

https://www.vulncheck.com/advisories/ffmpeg-through-9.0.2-vaapi-memory-leak-via-abandoned-picture-buffers

https://github.com/FFmpeg/FFmpeg/commit/838c660bb3cd66ba74981b453c14c79214f6ef92

https://github.com/FFmpeg/FFmpeg/commit/4221a63ce869ade862557ca64693bf77f5032971

https://github.com/FFmpeg/FFmpeg/blob/n9.0.2/libavcodec/vaapi_decode.c#L117

https://github.com/FFmpeg/FFmpeg

https://euvd.enisa.europa.eu/vulnerability/EUVD-2026-120202

https://code.ffmpeg.org/FFmpeg/FFmpeg/pulls/25231

Details

Source: Mitre, NVD

Published: 2026-11-09

Updated: 2026-11-10

Risk Information

CVSS v2

Base Score: 4

Vector: CVSS2#AV:L/AC:H/Au:N/C:N/I:N/A:C

Severity: Medium

CVSS v3

Base Score: 4.7

Vector: CVSS:3.1/AV:L/AC:H/PR:N/UI:R/S:U/C:N/I:N/A:H

Severity: Medium

CVSS v4

Base Score: 5.7

Vector: CVSS:4.0/AV:L/AC:H/AT:P/PR:N/UI:P/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N

Severity: Medium

EPSS

EPSS: 0.00155