Out-of-Bounds Write in FFmpeg's MagicYUV Decoder

Publication date: 2026-06-18

Last updated on: 2026-06-30

Assigner: JFrog

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.

CVSS Scores

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Meta Information

Published

2026-06-18

Last Modified

2026-06-30

Generated

2026-07-09

AI Q&A

2026-06-18

EPSS Evaluated

2026-07-08

NVD

CVE-2026-8461

EUVD

EUVD-2026-37878

Affected Vendors & Products

Vendor	Product	Version / Range
ffmpeg	ffmpeg	to 8.1.2 (exc)

Helpful Resources

Exploitability

CWE

KEV

CWE ID	Description
CWE-787	The product writes data past the end, or before the beginning, of the intended buffer.

Attack-Flow Graph

Impact Analysis

The vulnerability can lead to denial-of-service attacks, causing the affected application or system to crash or become unresponsive. In some scenarios, it may also allow remote attackers to execute arbitrary code, which could compromise system integrity, confidentiality, and availability.

Executive Summary

This vulnerability is an out-of-bounds write issue in FFmpeg's libavcodec library, specifically within the MagicYUV decoder. It allows attackers to cause a denial-of-service condition and, in some cases, potentially execute remote code on the affected system.

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