CVE-2026-33899 PUBLISHED

ImageMagick: Heap BufferOverflow write of single zero byte when parsing XML

Assigner: GitHub_M
Reserved: 24.03.2026 Published: 13.04.2026 Updated: 13.04.2026

ImageMagick is free and open-source software used for editing and manipulating digital images. In versions below 7.1.2-189 and 6.9.13-44, when Magick parses an XML file it is possible that a single zero byte is written out of the bounds. This issue has been fixed in versions 6.9.13-44 and 7.1.2-19.

Metrics

CVSS 3.1

CVSS Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L
CVSS Score: 5.3

Attack Vector	Network	Scope	Unchanged
Attack Complexity	Low	Confidentiality Impact	None
Privileges Required	None	Integrity Impact	None
User Interaction	None	Availability Impact	Low

CVSS 3.1

Product Status

Vendor	ImageMagick
Product	ImageMagick
Versions	Version < 6.9.13-44 is affected Version < 7.1.2-19 is affected

References

https://github.com/ImageMagick/ImageMagick/security/advisories/GHSA-cr67-pvmx-2pp2
https://github.com/ImageMagick/ImageMagick/commit/ae679e2fd19ec656bfab9f822ae4cf06bf91604d
https://github.com/ImageMagick/ImageMagick/releases/tag/7.1.2-19
https://github.com/dlemstra/Magick.NET/releases/tag/14.12.0

Problem Types

CWE-122: Heap-based Buffer Overflow CWE
CWE-191: Integer Underflow (Wrap or Wraparound) CWE