Fortinet Multiple Products Improper Verification of Cryptographic Signature Vulnerability
CISA lists this Fortinet Multiple Products vulnerability as known exploited. The vendor's advisory has the fixed versions.
CISA catalog record
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.
- Product
- Multiple Products
- Added to KEV
- 16 Dec 2025
- Federal remediation due
- 23 Dec 2025
- Known ransomware use
- Not reported
What changed
First observed 14 Oct 2026No field changes in the recorded history.
Cite this recorded revision to keep the same title, summary, facts and links when the page changes.
A day selects the latest observation by the end of that UTC day; today's selection can change until midnight. History starts when this installation records it.