CVE-2026-86421CWE-400denial-of-service

CVE-2026-86421

Low · published September 7, 2026

CVSS v3.1
3.7
EPSS
0%
Percentile
38.4
In the wild
Unconfirmed
What it is

ImageMagick before 7.1.2-30 and 6.9.13-55 contains a memory leak in the MSL image decoder. A crafted MSL image triggers memory allocation without proper deallocation, allowing an attacker to exhaust memory and cause a denial of service.

The record
Technical detail
CVSS v3.1
3.7 · LOW
Vector
CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:L
CVSS v4.0
6.3 · CVSS:4.0/AV:N/AC:H/AT:P/PR:N/UI:N/VC:N/VI:N/VA:L/SC:N/SI:N/SA:N
EPSS
0.00453 · 38.4th percentile
Weakness
CWE-400 · Uncontrolled Resource Consumption
Published
2026-09-07T17:20Z
Affected products (2)
ProductVersionsFixed in
imagemagick/imagemagick< 6.9.13-556.9.13-55
imagemagick/imagemagick≥ 7.0.0-0, < 7.1.2-307.1.2-30
References (2)
https://github.com/ImageMagick/ImageMagick/security/advisories/GHSA-4jv7-q6xw-6f4x · [email protected]https://www.vulncheck.com/advisories/imagemagick-before-7.1.2-30-memory-leak-via-msl-decoder · [email protected]
EPSS history
Timeline
  • 09 SEP 03:20Z
    EPSS moved — → 0%
    epss
  • 07 SEP 12:53Z
    ImageMagick before 7.1.2-30 Memory Leak via MSL decoder
    cvelistv5