{"id":"CVE-2026-126165","aliases":["EUVD-2026-123836","GHSA-24pv-pc96-gvcc"],"status":"published","title":"A memory allocation with excessive size value vulnerability in Fortinet FortiMail 8.0.0 through 8...","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.","severity":{"version":"3.1","score":7.5,"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","level":"high","assessor":"cna","from":"cve"},"facts":{"in_kev":false,"known_exploited":false,"public_exploit":false,"fix_available":false},"cwes":["CWE-789"],"published":"2026-11-11T21:29:24.082Z","modified":"2026-11-12T00:33:03Z","products":[{"vendor":"fortinet","product":"fortimail"}],"references":[{"url":"https://fortiguard.fortinet.com/psirt/FG-IR-26-217"},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2026-126165"},{"url":"https://github.com/advisories/GHSA-24pv-pc96-gvcc"}],"sources":{"cve":[{"id":"CVE-2026-126165","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.","status":"published","published":"2026-11-11T21:29:24.082Z","modified":"2026-11-11T21:29:24.082Z","cvss":[{"version":"3.1","score":7.5,"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","level":"high","assessor":"cna"}],"cwes":["CWE-789"],"updated_at":"2026-11-11T22:33:40.554088Z"}],"euvd":[{"id":"EUVD-2026-123836","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.","status":"published","published":"2026-11-12T00:32:56Z","modified":"2026-11-12T00:32:56Z","cvss":[{"version":"3.1","score":7.5,"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","level":"high"}],"updated_at":"2026-11-12T01:31:24.707094Z"}],"ghsa":[{"id":"GHSA-24pv-pc96-gvcc","title":"A memory allocation with excessive size value vulnerability in Fortinet FortiMail 8.0.0 through 8...","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.","status":"published","published":"2026-11-12T00:32:56Z","modified":"2026-11-12T00:33:03Z","cvss":[{"version":"3.1","score":7.5,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H","level":"high"}],"cwes":["CWE-789"],"updated_at":"2026-11-12T00:37:18.265111Z"}],"nvd":[{"id":"CVE-2026-126165","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.","status":"published","published":"2026-11-11T22:17:14.673Z","modified":"2026-11-11T22:17:14.673Z","cvss":[{"version":"3.1","score":7.5,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H","level":"high","assessor":"secondary"}],"cwes":["CWE-789"],"updated_at":"2026-11-11T23:26:41.421267Z"}]}}