CVE-2026-56374 | THREATINT

Description

ImageMagick before 7.1.2-19 contains a heap buffer overflow vulnerability in the FTXT encoder due to missing boundary checks when parsing ftxt:format. Remote attackers can trigger an out of bounds read by crafting malicious FTXT image files to cause denial of service or information disclosure.

PUBLISHED Reserved 2026-06-21 | Published 2026-07-08 | Updated 2026-07-08 | Assigner VulnCheck

MEDIUM: 4.8CVSS:4.0/AV:L/AC:L/AT:N/PR:N/UI:P/VC:N/VI:N/VA:L/SC:N/SI:N/SA:N

LOW: 3.3CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:L

Problem types

Out-of-bounds Read

Product status

Default status

unaffected

Any version before 7.1.2-19

affected

7.1.2-19 (semver)

unaffected

Credits

unbengable12 reporter

References

github.com/...Magick/security/advisories/GHSA-w54j-7wpm-crhj (GitHub Security Advisory (GHSA-w54j-7wpm-crhj)) vendor-advisory

www.vulncheck.com/...ow-in-ftxt-encoder-via-format-parameter (VulnCheck Advisory: ImageMagick - Heap Buffer Overflow in FTXT Encoder via format Parameter) third-party-advisory

cve.org (CVE-2026-56374)

nvd.nist.gov (CVE-2026-56374)

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