Time-of-check Time-of-use (TOCTOU) Race Condition in ImageMagick - CVE-2026-86424

Vulnerability identifier: #VU144584

CSH Severity: Low

CVSS v4: 2 [CVSS:4.0/AV:L/AC:L/AT:P/PR:L/UI:N/VC:N/VI:L/VA:N/SC:N/SI:N/SA:N]

CVE-ID: CVE-2026-86424

CWE-ID: CWE-367

Exploitation vector: Local access

Exploit availability: No public exploit available

The vulnerability allows a local user to compromise the target system.

The vulnerability exists due to time-of-check time-of-use race condition in the video decoder. A local user can bypass policy-denied write in the video decoder.

ImageMagick
openEuler
Anolis OS
ImageMagick
ImageMagick-c++
ImageMagick-c++-devel
ImageMagick-debuginfo
ImageMagick-debugsource
ImageMagick-devel
ImageMagick-perl
ImageMagick-help
ImageMagick-djvu
ImageMagick-doc
ImageMagick-libs

Install updates from vendor's website.

ImageMagick - addressed in versions 6.9.13-55, 7.1.2-30
ImageMagick - update to 7.1.2.31-1
ImageMagick-c++ - update to 7.1.2.31-1
ImageMagick-c++-devel - update to 7.1.2.31-1
ImageMagick-debuginfo - update to 7.1.2.31-1
ImageMagick-debugsource - update to 7.1.2.31-1
ImageMagick-devel - update to 7.1.2.31-1
ImageMagick-perl - update to 7.1.2.31-1
ImageMagick-help - update to 7.1.2.31-1
ImageMagick - update to 7.1.2.31-1
ImageMagick-c++ - update to 7.1.2.31-1
ImageMagick-c++-devel - update to 7.1.2.31-1
ImageMagick-devel - update to 7.1.2.31-1
ImageMagick-djvu - update to 7.1.2.31-1
ImageMagick-doc - update to 7.1.2.31-1
ImageMagick-libs - update to 7.1.2.31-1
ImageMagick-perl - update to 7.1.2.31-1

• https://github.com/ImageMagick/ImageMagick/security/advisories/GHSA-9x6f-98x9-rx6g

• Multiple vulnerabilities in ImageMagick
• openEuler update for ImageMagick
• Anolis OS update for ImageMagick