CVE-2025-59719
Critical
Description
An improper verification of cryptographic signature vulnerability in Fortinet FortiWeb 8.0.0, FortiWeb 7.6.0 through 7.6.4, FortiWeb 7.4.0 through 7.4.9 may allow an unauthenticated attacker to bypass the FortiCloud SSO login authentication via a crafted SAML response message.
SeverityCritical
CVSS9.8
Exploit probability—
Product
Fortinet Fortiweb
PublishedDec 9, 2025
First seenDec 9, 2025
Weakness typeCWE-347CWE-347
How to fix
Sources list no fixed version or patch link for this vulnerability.
Affected products
| Product | Affected versions | Fixed in |
|---|---|---|
| fortinet fortiweb | 7.4.0 ≤ v ≤ 7.4.9, 7.6.0 ≤ v ≤ 7.6.4, 8.0.0 | — |
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