CVE-2025-59718
Fortinet Multiple Products Improper Verification of Cryptographic Signature Vulnerability
⚠ KEVEPSS 9.5%
Description
Fortinet FortiOS, FortiSwitchMaster, FortiProxy, and FortiWeb contain an improper verification of cryptographic signature vulnerability that may allow an unauthenticated attacker to bypass the FortiCloud SSO login authentication via a crafted SAML message. Please be aware that CVE-2025-59719 pertains to the same problem and is mentioned in the same vendor advisory. Ensure to apply all patches mentioned in the advisory.
How to fix CVE-2025-59718
No package mapping is available — consult the references below for vendor-specific guidance.
Is CVE-2025-59718 being exploited?
Yes — CVE-2025-59718 is on the CISA Known Exploited Vulnerabilities (KEV) catalog. Patch immediately.
Affected packages (0)
No package mapping in OSV.