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.
- Vendor
- Fortinet
- Product
- Multiple Products
- Added to KEV
- Dec 16, 2025
- Remediation due
- Dec 23, 2025 (US federal deadline)
- Ransomware use
- Not known
- Weakness
- CWE-347
- EPSS
- 68.1% as of Nov 12
In the news
- No Asia-Pacific article names this CVE yet.
Linked
Actors named alongside it:
none
Incidents exploiting it:
- none recorded
References