Quick answers
- Is CVE-2026-109964 exploited in the wild?
- No. Junglewise Threat Intelligence has no report of CVE-2026-109964 being exploited in the wild.
- How severe is CVE-2026-109964?
- Medium severity, with a CVSS score of 5.6, published 13 October 2026.
- Which products and versions are affected?
- ImageMagick before 7.1.2-33 and 6.9.13-58 (32-bit builds).
- Is there a fix for CVE-2026-109964?
- Yes: fixed in ImageMagick 7.1.2-33, 6.9.13-58. Junglewise finds every place you run it, drafts the upgrade and applies it once you approve.
- How is CVE-2026-109964 attacked?
- It is attacked over the network, in a software library.
- Am I affected by CVE-2026-109964?
- Check whether you run ImageMagick at an affected version. Junglewise does that check for you around the clock: connect your code, cloud and domains, and it matches new vulnerabilities like this one against what you actually run and tells you when one reaches you.
How to fix
- Fixed in: ImageMagick 7.1.2-33, 6.9.13-58
Technical details
The vulnerability is a heap buffer underwrite in DecodeImage() in coders/pict.c, caused by pointer arithmetic overflow on 32-bit builds. Attackers supply a crafted PICT file with maximized row, column, and bytes-per-line values to bypass bounds checks and write up to 128 controlled bytes below the heap buffer. This requires the attacker to provide a malicious PICT file to an application using ImageMagick, with no authentication or user privileges needed beyond file access.
Affected products
- ImageMagick ImageMagick before 7.1.2-33 and 6.9.13-58 (32-bit builds)
Timeline
- 2026-10-13: disclosed