{"id":"CVE-2025-59718","title":"A improper verification of cryptographic signature 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, FortiOS 7.0.0 through 7.0.17, FortiProxy 7.6.0 through 7.6.3, FortiProxy…","summary":"A improper verification of cryptographic signature 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, FortiOS 7.0.0 through 7.0.17, FortiProxy 7.6.0 through 7.6.3, FortiProxy…","severity":"critical","cvss":9.1,"cvssVector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H/E:F/RL:O/RC:C","cvssSource":"cna","cwe":["CWE-347"],"vendor":"Fortinet","product":"FortiSwitchManager","affected":["FortiSwitchManager >= 7.2.0 <= 7.2.6","FortiSwitchManager >= 7.0.0 <= 7.0.5","FortiOS >= 7.6.0 <= 7.6.3","FortiOS >= 7.4.0 <= 7.4.8","FortiOS >= 7.2.0 <= 7.2.11","FortiOS >= 7.0.0 <= 7.0.17","FortiProxy >= 7.6.0 <= 7.6.3","FortiProxy >= 7.4.0 <= 7.4.10","FortiProxy >= 7.2.0 <= 7.2.14","FortiProxy >= 7.0.0 <= 7.0.21"],"ssvc":{"exploitation":"active","automatable":"yes","technicalImpact":"total","timestamp":"2025-12-17T04:55:21.365957Z"},"exploited":true,"exploitAvailable":true,"published":"2025-12-09","updated":"2026-10-15","sourceUpdated":"2026-10-15T01:09:26.767Z","source":"CVEORG","sourceUrl":"https://www.cve.org/CVERecord?id=CVE-2025-59718","references":[{"url":"https://fortiguard.fortinet.com/psirt/FG-IR-25-647","label":"https://fortiguard.fortinet.com/psirt/FG-IR-25-647"}],"tags":["cve.org","in-the-wild","exploit-available","kev"],"epss":0.68293,"epssPercentile":0.99325,"kev":true,"kevDateAdded":"2025-12-16","kevDueDate":"2025-12-23","kevRansomware":false,"exploits":{"github":2,"githubRepos":["https://github.com/exfil0/CVE-2025-59718-PoC","https://github.com/moften/CVE-2025-59718-Fortinet-Poc"],"checkedAt":"2026-10-15T05:53:20.622Z"},"ingestedAt":"2026-10-15T05:52:46.067Z","slug":"CVE-2025-59718","body":"## Overview\n\nA improper verification of cryptographic signature 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, FortiOS 7.0.0 through 7.0.17, FortiProxy 7.6.0 through 7.6.3, FortiProxy 7.4.0 through 7.4.10, FortiProxy 7.2.0 through 7.2.14, FortiProxy 7.0.0 through 7.0.21, FortiSwitchManager 7.2.0 through 7.2.6, FortiSwitchManager 7.0.0 through 7.0.5 allows an unauthenticated attacker to bypass the FortiCloud SSO login authentication via a crafted SAML response message.\n\n## Affected\n\n- `FortiSwitchManager >= 7.2.0 <= 7.2.6`\n- `FortiSwitchManager >= 7.0.0 <= 7.0.5`\n- `FortiOS >= 7.6.0 <= 7.6.3`\n- `FortiOS >= 7.4.0 <= 7.4.8`\n- `FortiOS >= 7.2.0 <= 7.2.11`\n- `FortiOS >= 7.0.0 <= 7.0.17`\n- `FortiProxy >= 7.6.0 <= 7.6.3`\n- `FortiProxy >= 7.4.0 <= 7.4.10`\n- `FortiProxy >= 7.2.0 <= 7.2.14`\n- `FortiProxy >= 7.0.0 <= 7.0.21`\n\n## Remediation\n\nUpgrade to FortiSwitchManager version 7.2.7 or above\nUpgrade to FortiSwitchManager version 7.0.6 or above\nUpgrade to FortiProxy version 7.6.4 or above\nUpgrade to FortiProxy version 7.4.11 or above\nUpgrade to FortiProxy version 7.2.15 or above\nUpgrade to FortiProxy version 7.0.22 or above\nUpgrade to FortiOS version 7.6.4 or above\nUpgrade to FortiOS version 7.4.9 or above\nUpgrade to FortiOS version 7.2.12 or above\nUpgrade to FortiOS version 7.0.18 or above\nUpgrade to FortiWeb version 8.0.1 or above\nUpgrade to FortiWeb version 7.6.5 or above\nUpgrade to FortiWeb version 7.4.10 or above\nFortinet remediated this issue in FortiSASE version 25.3.b and hence customers do not need to perform any action.\nUpgrade to FortiPAM version 1.8.0 or above","depth":"hadal","depthScore":89,"depthScoreParts":{"impact":50.1,"likelihood":13.7,"exploitation":25,"ransomware":0},"changes":[]}