{"affected":[{"defaultStatus":"unaffected","product":"FortiMail","source":"CNA: fortinet","vendor":"Fortinet","versions":[{"lessThanOrEqual":"8.0.1","status":"affected","version":"8.0.0","versionType":"semver"},{"lessThanOrEqual":"7.6.6","status":"affected","version":"7.6.0","versionType":"semver"},{"lessThanOrEqual":"7.4.8","status":"affected","version":"7.4.0","versionType":"semver"},{"lessThanOrEqual":"7.2.9","status":"affected","version":"7.2.0","versionType":"semver"},{"lessThanOrEqual":"7.0.9","status":"affected","version":"7.0.0","versionType":"semver"}]}],"cveId":"CVE-2026-126165","cwes":["CWE-789"],"description":"A memory allocation with excessive size value vulnerability in Fortinet FortiMail 8.0.0 through 8.0.1, FortiMail 7.6.0 through 7.6.6, FortiMail 7.4.0 through 7.4.8, FortiMail 7.2 all versions may allow a remote unauthenticated attacker to cause a denial of service via a specially crafted attachment delivered over SMTP.","epss":null,"exploits":[],"kev":null,"metrics":[{"score":7.5,"severity":"high","source":"CNA: fortinet","vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H/E:P/RL:O/RC:C","version":"3.1"}],"modifiedAt":1794432564082,"publishedAt":1794432564082,"references":[{"source":"CNA: fortinet","tags":[],"url":"https://fortiguard.fortinet.com/psirt/FG-IR-26-217"}],"remediation":[{"kind":"fix","source":"CNA: fortinet","text":"Upgrade to FortiMail version 8.0.2 or above\nUpgrade to FortiMail version 7.6.7 or above\nUpgrade to FortiMail version 7.4.9 or above"}],"revision":"90a9542ab25f6b34c71c452699a58d583e5f23dce569c63a23894abb081284f9","sources":[{"modifiedAt":1794432564082,"name":"CNA: fortinet","retrievedAt":1794434958304,"url":"https://www.cve.org/CVERecord?id=CVE-2026-126165"}],"ssvc":null,"status":"published","title":"CVE-2026-126165","updatedAt":1794434958304}