{"id":"CVE-2025-53844","title":"A out-of-bounds write vulnerability in Fortinet FortiOS 7.6.0 through 7.6.3, FortiOS 7.4.0 through 7.4.8, FortiOS 7.2.0 through 7.2.11 allows attacker to execute unauthorized code or commands via specially crafted packets.","summary":"A out-of-bounds write vulnerability in Fortinet FortiOS 7.6.0 through 7.6.3, FortiOS 7.4.0 through 7.4.8, FortiOS 7.2.0 through 7.2.11 allows attacker to execute unauthorized code or commands via specially crafted packets.","severity":"high","cvss":8.8,"cvssVector":"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H","cwe":["CWE-787"],"vendor":"fortinet","product":"fortios","affected":["fortios >= 7.2.0, < 7.2.12","fortios >= 7.4.0, < 7.4.9","fortios >= 7.6.0, < 7.6.4"],"patched":["fortios 7.6.4"],"published":"2026-05-12","updated":"2026-09-30","sourceUpdated":"2026-09-30T22:10:00.273","source":"NVD","sourceUrl":"https://nvd.nist.gov/vuln/detail/CVE-2025-53844","references":[{"url":"https://fortiguard.fortinet.com/psirt/FG-IR-26-123","label":"psirt@fortinet.com"},{"url":"https://cert-portal.siemens.com/productcert/html/ssa-864900.html","label":"0b142b55-0307-4c5a-b3c9-f314f3fb7c5e"}],"tags":["nvd"],"epss":0.00564,"epssPercentile":0.44789,"ingestedAt":"2026-09-30T22:27:27.787Z","slug":"CVE-2025-53844","body":"## Overview\n\nA out-of-bounds write vulnerability in Fortinet FortiOS 7.6.0 through 7.6.3, FortiOS 7.4.0 through 7.4.8, FortiOS 7.2.0 through 7.2.11 allows attacker to execute unauthorized code or commands via specially crafted packets.\n\n## Affected\n\n- `fortios >= 7.2.0, < 7.2.12`\n- `fortios >= 7.4.0, < 7.4.9`\n- `fortios >= 7.6.0, < 7.6.4`\n\n## Remediation\n\nUpgrade past the affected range:\n\n- `fortios 7.6.4`","depth":"twilight","depthScore":49,"depthScoreParts":{"impact":48.4,"likelihood":0.1,"exploitation":0,"ransomware":0},"changes":[]}