Buffer overflow in Imagemagick
CVE-2026-30937
ImageMagick is free and open-source software used for editing and manipulating digital images. Prior to versions 7.1.2-16 and 6.9.13-41, a 32-bit unsigned integer overflow in the XWD (X Windows) encoder can cause an undersized heap buffer allocation. When writing a extremely large image an out of bounds heap write can occur. This vulnerability is fixed in 7.1.2-16 and 6.9.13-41.
Vulnerability class: Buffer Overflow
EPSS: 0.001 (1.0th percentile) — read the EPSS interpretation.
CVSS v3 metric
CVSS v3 base score 6.8 (Medium). Vector: CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:H.
Affected products
- Imagemagick — versions >= 7.0.0, < 7.1.2-16, < 6.9.13-41
Weakness classification (CWE)
References
- security-advisories@github.com (x_refsource_CONFIRM, Vendor Advisory)
Frequently asked questions
- What is CVE-2026-30937?
- CVE-2026-30937 is a medium-severity vulnerability in Imagemagick, classified under Heap-based Buffer Overflow. CVSS score: 6.8/10. Published 2026-03-10.
- How severe is CVE-2026-30937?
- Medium severity. CVSS v3 base score is 6.8 out of 10.