Out-of-bounds write in FFmpeg - CVE-2026-8461
Published: June 23, 2026
Vulnerability identifier: #VU135066
CSH Severity: High
CVSS v4: 8.4 [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]
CVE-ID: CVE-2026-8461
CWE-ID: CWE-787
Exploitation vector: Remote access
Exploit availability:
No public exploit available
Vulnerability details
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.
Affected software
FFmpeg
Debian Linux
ffmpeg (Debian package)
Debian Linux
ffmpeg (Debian package)
How to mitigate CVE-2026-8461
Install updates from vendor's website.
FFmpeg - addressed in versions 4.4.8, 5.1.10, 6.1.6, 7.1.5, 8.0.3, 8.1.2
ffmpeg (Debian package) - update to 7:7.1.5-0+deb13u1
ffmpeg (Debian package) - update to 7:7.1.5-0+deb13u1