CVE-2026-109279

ImageMagick before 6.9.13-57 and 7.x before 7.1.2-32 Heap Buffer Overflow via Concurrent Security Policy Access

State: Published
Severity: 2.0 Low
Published: Oct 12, 2026
Updated: Oct 13, 2026
Reserved: Oct 12, 2026

Description

ImageMagick before 6.9.13-57 and 7.x before 7.1.2-32 lacks proper synchronization when the security policy is accessed, so simultaneous reads and writes of the policy by multiple threads trigger a race condition that causes a heap buffer over-write. An attacker able to induce concurrent security policy access can crash the application, causing a denial of service.

Scores

CVSS	Score	Vector	Source
4.0	2.0 Low	CVSS:4.0/AV:L/AC:L/AT:P/PR:L/UI:N/VC:N/VI:N/VA:L/SC:N/SI:N/SA:N	VulnCheck
3.1	2.5 Low	CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:N/I:N/A:L	VulnCheck

Weaknesses

CWE-362 Concurrent Execution using Shared Resource with Improper Synchronization ('Race Condition')

Affected Products

Product	Versions
ImageMagickImageMagick	7.0.0-0 to before 7.1.2-32Affected 7.1.2-32Not affected
ImageMagickImageMagick	before 6.9.13-57Affected 6.9.13-57Not affected

References

GitHub Security Advisory (GHSA-8x3v-wr32-qqh4)vendor-advisory
Patch Commitpatch
ImageMagick6 Patch Commitpatch
VulnCheck Advisory: ImageMagick before 6.9.13-57 and 7.x before 7.1.2-32 Heap Buffer Overflow via Concurrent Security Policy Accessthird-party-advisory

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