CVE-2026-8461

Heap out-of-bounds write via odd slice_height in FFmpeg MagicYUV decoder

Published Jun 18, 2026 CVSS 3.1 · 8.8 High EPSS 1.6% KEV · Not listed
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.

Remediation

No solution or workaround provided in the CVE record

Tracking

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Advisories

Source ID Title
Debian DSA Debian DSA DSA-6361-1 ffmpeg security update
Ubuntu USN Ubuntu USN USN-8750-1 FFmpeg vulnerabilities
History
Type Values Removed Values Added
First Time appeared Ffmpeg
Ffmpeg ffmpeg
Vendors & Products Ffmpeg
Ffmpeg ffmpeg
Type Values Removed Values Added
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.
Title Heap out-of-bounds write via odd slice_height in FFmpeg MagicYUV decoder
Weaknesses CWE-787
References
Metrics cvssV3_1

{'score': 8.8, 'vector': 'CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H'}

ssvc

{'options': {'Automatable': 'no', 'Exploitation': 'none', 'Technical Impact': 'total'}, 'version': '2.0.3'}

Weaknesses

Sources

Status
PUBLISHED
Assigner
JFROG
Published
Updated
Jul 23, 2026, 12:08 PM
Reserved
May 13, 2026, 9:59 AM
Status
Awaiting Analysis
Published
Jun 18, 2026, 2:17 PM
Modified
Jul 23, 2026, 12:18 PM
Severity
Important
Public date
Jun 18, 2026, 11:29 AM