CVE-2026-56374
ImageMagick - Heap Buffer Overflow in FTXT Encoder via format Parameter
- State
- Published
- Severity
- 4.8 Medium
- Published
- Jul 8, 2026
- Updated
- Jul 8, 2026
- Reserved
- Jun 21, 2026
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.
Scores
| CVSS | Score | Vector | Source |
|---|---|---|---|
| 4.0 | 4.8 Medium | CVSS:4.0/AV:L/AC:L/AT:N/PR:N/UI:P/VC:N/VI:N/VA:L/SC:N/SI:N/SA:N | VulnCheck |
| 3.1 | 3.3 Low | CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:L | VulnCheck |
Weaknesses
- CWE-125 Out-of-bounds Read
Affected Products
| Product | Versions |
|---|---|
ImageMagickImageMagick |
|
References
- GitHub Security Advisory (GHSA-w54j-7wpm-crhj)vendor-advisory
- VulnCheck Advisory: ImageMagick - Heap Buffer Overflow in FTXT Encoder via format Parameterthird-party-advisory
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