UNKNOWNKNOWN EXPLOITED

CVE-2025-59718

Fortinet Multiple Products Improper Verification of Cryptographic Signature Vulnerability

Published: 2025-12-16
Modified: 2026-07-31
Sources: cisa-kev

Summary

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.

References

https://www.cisa.gov/known-exploited-vulnerabilities-catalog

Includes data from the CISA Known Exploited Vulnerabilities catalog.

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