CVE-2026-116149: ImageMagick before 6.9.13-58 and 7.x before 7.1.2-33 Stack Buffer Overflow via bzip2 Compressed Images

Severity: high (CVSS 8.1 v3.1)
Exploited in the wild: not listed in CISA KEV
EPSS: 0.3% probability of exploitation in the next 30 days
Public exploit or detection template: none known
Published: 2026-10-25 · updated 2026-10-29
Weakness: CWE-121

Description

ImageMagick before 6.9.13-58 and 7.x before 7.1.2-33 contains a stack-based buffer overflow in the handling of bzip2 compressed images. Attackers can supply a crafted image using bzip2 compression to overwrite stack memory during decoding, causing crashes or memory corruption.

Affected products

ImageMagick: from 7.0.0-0 before 7.1.2-33 — fixed in 7.1.2-33

How to fix

Upgrade to a fixed version: ImageMagick 7.1.2-33. Check the vendor advisory for mitigations.

References

https://github.com/ImageMagick/ImageMagick/security/advisories/GHSA-pwpf-8799-94cj
https://www.vulncheck.com/advisories/imagemagick-before-6.9.13-58-and-7-x-before-7.1.2-33-stack-buffer-overflow-via-bzip2-compressed-images

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