CVE-2026-125238

medium

Description

FFmpeg through 9.0.2 contains a reachable assertion vulnerability in libxevd_receive_frame() in libavcodec/libxevd.c that returns success when an access unit produces no frame. Attackers can supply a crafted EVC file with truncated or picture-less access units to trigger the av_assert0() on frame->private_ref, aborting any decoding application.

References

https://www.vulncheck.com/advisories/ffmpeg-through-9.0.2-reachable-assertion-in-libxevd-evc-decoder-wrapper

https://github.com/FFmpeg/FFmpeg/commit/33b0107a04b9ec361d76ae148cb6683964f88073

https://github.com/FFmpeg/FFmpeg/blob/n9.0.2/libavcodec/libxevd.c#L448

https://github.com/FFmpeg/FFmpeg

https://euvd.enisa.europa.eu/vulnerability/EUVD-2026-120188

https://code.ffmpeg.org/FFmpeg/FFmpeg/pulls/25416

Details

Source: Mitre, NVD

Published: 2026-11-09

Updated: 2026-11-10

Risk Information

CVSS v2

Base Score: 4.9

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

Severity: Medium

CVSS v3

Base Score: 5.5

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

Severity: Medium

CVSS v4

Base Score: 6.8

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

Severity: Medium

EPSS

EPSS: 0.00165