Buffer overflow in Dlemstra Magick.net
CVE-2026-27799
ImageMagick is free and open-source software used for editing and manipulating digital images. Prior to versions 7.1.2-15 and 6.9.13-40, a heap buffer over-read vulnerability exists in the DJVU image format handler. The vulnerability occurs due to integer truncation when calculating the stride (row size) for pixel buffer allocation. The stride calculation overflows a 32-bit signed integer, resulting in an out-of-bounds memory reads. Versions 7.1.2-15 and 6.9.13-40 contain a patch.
Vulnerability class: Buffer Overflow
Published · last modified .
CVSS v3 metric
CVSS v3 base score 4.0 (Medium). Vector: CVSS:3.1/AV:L/AC:H/PR:N/UI:N/S:U/C:N/I:L/A:L.
EPSS exploit prediction
EPSS: 0.002 (6.9th percentile), scored .
Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 7th percentile — 6.9% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.001 · newest: 0.002 · change: +0.001
Affected products
- Dlemstra Magick.net
- Imagemagick — versions < 6.9.13-40, >= 7.0.0, < 7.1.2-15
Weakness classification (CWE)
References
Frequently asked questions
- What is CVE-2026-27799?
- CVE-2026-27799 is a medium-severity vulnerability in Dlemstra Magick.net, classified under Heap-based Buffer Overflow. CVSS score: 4.0/10. Published 2026-02-26.
- How severe is CVE-2026-27799?
- Medium severity. CVSS v3 base score is 4.0 out of 10.