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Vulnerability record · CVE-2026-109279 · published 12 October 2026

CVE-2026-109279: Race condition vulnerability

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.

2.0 CVSS 4.0 Low EPSS 0.09% · top 99.7% CWE-362 · Race condition Awaiting Analysis
2.0CVSS 4.0 base score
0.09%EPSS exploitation probability, 30 days
NoNot in CISA KEV
0Affected product versions listed by NVD
4References
13 Oct 2026Last modified by NVD

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.

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/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:

References

LinkTags
https://github.com/ImageMagick/ImageMagick/commit/12db6f04e895deae4537ead10c771a244607794a
https://github.com/ImageMagick/ImageMagick/security/advisories/GHSA-8x3v-wr32-qqh4
https://github.com/ImageMagick/ImageMagick6/commit/9ddc71abea5cbe7d18164fa0f0077a105cab514f
https://www.vulncheck.com/advisories/imagemagick-before-6.9.13-57-and-7-x-before-7.1.2-32-heap-buffer-overflow-via-concu

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Source: NIST National Vulnerability Database (record CVE-2026-109279), CISA KEV, FIRST EPSS (scores of 2026-10-15). This page is refreshed as NVD updates the record.