CVE-2026-8461

high

Description

An out-of-bounds write vulnerability in FFmpeg's libavcodec library, specifically in the MagicYUV decoder, allows denial-of-service and, in some cases, can be exploited for remote code execution. This vulnerability is associated with the file libavcodec/magicyuv.C. This issue affects FFmpeg before version 8.1.2.

References

References
More

https://www.malwarebytes.com/blog/news/2026/06/pixelsmash-flaw-turns-video-files-into-attack-tools

https://www.securityweek.com/ffmpeg-pixelsmash-flaw-allows-rce-on-video-players-media-servers-nas-appliances/

https://www.bleepingcomputer.com/news/security/ffmpeg-fixes-pixelsmash-flaw-in-widely-used-video-decoder/

https://github.com/thystra/jellyfin-security-images

https://github.com/the-artist111/NeuralReaper

https://github.com/ray-goldman/ffmpeg-jellyfix

https://github.com/0xBlackash/CVE-2026-8461

https://github.com/HORKimhab/CVE-2026-8461

https://github.com/patissierMongs/advisory-platform

https://github.com/Unclecheng-li/poc-lab

https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-8461.json

https://euvd.enisa.europa.eu/vulnerability/EUVD-2026-37878

https://code.ffmpeg.org/FFmpeg/FFmpeg/pulls/23159

https://bugzilla.redhat.com/show_bug.cgi?id=2490308

https://access.redhat.com/security/cve/CVE-2026-8461

https://access.redhat.com/errata/RHSA-2026:43711

Details

Source: Mitre, NVD

Published: 2026-06-18

Updated: 2026-07-23

Named Vulnerability: PixelSmashNamed Vulnerability: GHSA-qff7-4q6c-m8h6

Risk Information

CVSS v2

Base Score: 10

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

Severity: Critical

CVSS v3

Base Score: 8.8

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

Severity: High

EPSS

EPSS: 0.00346