---
id: CVE-2026-125238
title: FFmpeg through 9.0.2 Reachable Assertion in libxevd EVC Decoder Wrapper
summary: >-
  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 pi…
severity: medium
cvss: 5.5
cvssVector: 'CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H'
cvssSource: cna
cwe:
  - CWE-617
vendor: FFmpeg
product: FFmpeg
affected:
  - FFmpeg >= 7.0 <= 9.0.2
ssvc:
  exploitation: none
  automatable: 'no'
  technicalImpact: partial
  timestamp: '2026-11-09T20:56:54.759047Z'
published: '2026-11-09'
updated: '2026-11-09'
sourceUpdated: '2026-11-09T21:06:53.639Z'
source: CVEORG
sourceUrl: 'https://www.cve.org/CVERecord?id=CVE-2026-125238'
references:
  - url: 'https://code.ffmpeg.org/FFmpeg/FFmpeg/pulls/25416'
  - url: >-
      https://github.com/FFmpeg/FFmpeg/commit/33b0107a04b9ec361d76ae148cb6683964f88073
    label: Patch Commit
  - url: 'https://github.com/FFmpeg/FFmpeg/blob/n9.0.2/libavcodec/libxevd.c#L448'
  - url: 'https://github.com/FFmpeg/FFmpeg'
  - url: >-
      https://www.vulncheck.com/advisories/ffmpeg-through-9.0.2-reachable-assertion-in-libxevd-evc-decoder-wrapper
    label: >-
      VulnCheck Advisory: FFmpeg through 9.0.2 Reachable Assertion in libxevd
      EVC Decoder Wrapper
tags:
  - cve.org
ingestedAt: '2026-11-09T19:18:02.582Z'
---

## Overview

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.

## Affected

- `FFmpeg >= 7.0 <= 9.0.2`

## Remediation

Refer to the linked advisories for vendor-supplied fixes and affected version ranges.