{"id":"CVE-2026-86421","title":"ImageMagick before 7.1.2-30 and 6.9.13-55 contains a memory leak in the MSL image decoder","summary":"ImageMagick before 7.1.2-30 and 6.9.13-55 contains a memory leak in the MSL image decoder. A crafted MSL image triggers memory allocation without proper deallocation, allowing an attacker to exhaust memory and cause a denial of service.","severity":"low","cvss":3.7,"cvssVector":"CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:L","cwe":["CWE-400","CWE-772"],"vendor":"imagemagick","product":"imagemagick","affected":["imagemagick < 6.9.13-55","imagemagick >= 7.0.0-0, < 7.1.2-30"],"patched":["imagemagick 7.1.2-30"],"published":"2026-09-07","updated":"2026-09-09","sourceUpdated":"2026-09-09T17:04:13.437","source":"NVD","sourceUrl":"https://nvd.nist.gov/vuln/detail/CVE-2026-86421","references":[{"url":"https://github.com/ImageMagick/ImageMagick/security/advisories/GHSA-4jv7-q6xw-6f4x","label":"disclosure@vulncheck.com"},{"url":"https://www.vulncheck.com/advisories/imagemagick-before-7.1.2-30-memory-leak-via-msl-decoder","label":"disclosure@vulncheck.com"},{"url":"https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-86421.json"},{"url":"https://access.redhat.com/security/cve/CVE-2026-86421"},{"url":"https://bugzilla.redhat.com/show_bug.cgi?id=2529440"},{"url":"https://www.cve.org/CVERecord?id=CVE-2026-86421"},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2026-86421"}],"tags":["nvd","cve.org","csaf","vex","red-hat"],"epss":0.0046,"epssPercentile":0.37298,"ssvc":{"exploitation":"none","automatable":"no","technicalImpact":"partial","timestamp":"2026-09-08T13:51:08.714216Z"},"ingestedAt":"2026-09-08T15:33:26.977Z","slug":"CVE-2026-86421","body":"## Overview\n\nImageMagick before 7.1.2-30 and 6.9.13-55 contains a memory leak in the MSL image decoder. A crafted MSL image triggers memory allocation without proper deallocation, allowing an attacker to exhaust memory and cause a denial of service.\n\n## Affected\n\n- `imagemagick < 6.9.13-55`\n- `imagemagick >= 7.0.0-0, < 7.1.2-30`\n\n## Remediation\n\nUpgrade past the affected range:\n\n- `imagemagick 7.1.2-30`\n\n## Vendor advisories\n\n- **Red Hat VEX** · Low · affected: Red Hat Enterprise Linux 6, Red Hat Enterprise Linux 7 · no fix planned: Red Hat Enterprise Linux 6, Red Hat Enterprise Linux 7 · updated 2026-09-09 · [vex](https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-86421.json)","depth":"sunlit","depthScore":20,"depthScoreParts":{"impact":20.4,"likelihood":0.1,"exploitation":0,"ransomware":0},"changes":[]}