Out-of-bounds write in FFmpeg - CVE-2026-8461
Published: June 23, 2026
Vulnerability identifier: #VU135066
CSH Severity: High
CVSS v4.0: CVSS:4.0/AV:L/AC:L/AT:N/PR:N/UI:A/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:U/U:Amber
CVE-ID: CVE-2026-8461
CWE-ID: CWE-787
Exploitation vector: Remote access
Exploit availability:
No public exploit available
Vendor: ffmpeg.sourceforge.net
Affected software:
FFmpeg
FFmpeg
Detailed vulnerability description
The vulnerability allows a remote attacker to compromise vulnerable system.
The vulnerability exists due to a boundary error within the MagicYUV decoder in libavcodec/magicyuv.c. A remote attacker can pass specially crafted media content to the library, trigger an out-of-bounds write and execute arbitrary code on the target system.
How to mitigate CVE-2026-8461
Install updates from vendor's website.