CVE-2025-59719

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.

CVSS v3.1 Score

9.8

CRITICAL

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

Weakness Type (CWE)

CWE-347 CWE-347

Affected Products

Vendor	Product	Versions
fortinet	fortiweb	7.4.0 — 7.4.9
fortinet	fortiweb	7.6.0 — 7.6.4
fortinet	fortiweb	All

References

Advisories & Patches

https://fortiguard.fortinet.com/psirt/FG-IR-25-647

Frequently Asked Questions

What is CVE-2025-59719? +

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. It has a CVSS v3.1 base score of 9.8 (CRITICAL).

How severe is CVE-2025-59719? +

CVE-2025-59719 has a CVSS v3.1 score of 9.8 out of 10, rated CRITICAL. This is a critical vulnerability that should be patched immediately.

What products are affected by CVE-2025-59719? +

CVE-2025-59719 affects products from fortinet, specifically: fortiweb. Check the affected products table above for specific version ranges.

How do I check if I'm vulnerable to CVE-2025-59719? +

You can use Secably's free Website Scanner to check your website for known vulnerabilities. For infrastructure scanning, use the Port Scanner to identify exposed services that may be affected. Check the vendor advisories linked above for specific patch and version information.

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