Heap-based Buffer Overflow Affecting imagemagick package, versions <8:6.9.10.23+dfsg-2.1ubuntu11.11+esm7


Severity

Recommended
medium

Based on Ubuntu security rating.

Threat Intelligence

EPSS
0.59% (46th percentile)

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  • Snyk IDSNYK-UBUNTU2004-IMAGEMAGICK-15050727
  • published4 Feb 2026
  • disclosed20 Jan 2026

Introduced: 20 Jan 2026

CVE-2026-23876  (opens in a new tab)
CWE-122  (opens in a new tab)
CWE-190  (opens in a new tab)

How to fix?

Upgrade Ubuntu:20.04 imagemagick to version 8:6.9.10.23+dfsg-2.1ubuntu11.11+esm7 or higher.

NVD Description

Note: Versions mentioned in the description apply only to the upstream imagemagick package and not the imagemagick package as distributed by Ubuntu. See How to fix? for Ubuntu:20.04 relevant fixed versions and status.

ImageMagick is free and open-source software used for editing and manipulating digital images. Prior to versions 7.1.2-13 and 6.9.13-38, a heap buffer overflow vulnerability in the XBM image decoder (ReadXBMImage) allows an attacker to write controlled data past the allocated heap buffer when processing a maliciously crafted image file. Any operation that reads or identifies an image can trigger the overflow, making it exploitable via common image upload and processing pipelines. Versions 7.1.2-13 and 6.9.13-38 fix the issue.

CVSS Base Scores

version 3.1