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TI-2025-37179 Aliases CVE-2025-59719GHSA-chq4-235q-jp7w

Improper signature verification in Fortinet FortiWeb

Priority HIGH 70CWE-347Published · Updated

Key facts

Attack vector
Network
Privileges required
None
User interaction
None
Attack complexity
Low
Impact type
Security bypass
Confidentiality · integrity · availability
High · High · High
Fix status
No fix listed

Attack profile from CVSS 3.1 · CNA. Fix status from CNA. Impact type from CWE-347.

Summary

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.

Why it matters now

Exploitation None reported CISA SSVC · not in CISA KEV
EPSS 0.29224 98th percentileScored 2026-11-07
Fix No fix listed No fixed version in the sources yet

SSVC decision points

CISA ADP · SSVC 2.0.3

Exploitation
None
Automatable
Yes
Technical impact
Total

The decision (Track, Attend, Act) also depends on your mission and well-being impact; see CISA's SSVC guide.

Affected products

VendorProductAffected versionsFixed inStatusSource
FortinetFortiWeb8.0.0; 7.6.0 – 7.6.4; 7.4.0 – 7.4.9—No fix listedCNA
  • FortiWeb VendorFortinet Affected 8.0.0; 7.6.0 – 7.6.4; 7.4.0 – 7.4.9 Fixed in — No fix listed CNA

CPE configurations NVD · 2

CPEVersionsRoleVendor
cpe:2.3:a:fortinet:fortiweb:*:*:*:*:*:*:*:*7.4.0 – 7.4.9; 7.6.0 – 7.6.4VulnerableFortinet
cpe:2.3:a:fortinet:fortiweb:8.0.0:*:*:*:*:*:*:*8.0.0VulnerableFortinet
  • cpe:2.3:a:fortinet:fortiweb:*:*:*:*:*:*:*:* Versions 7.4.0 – 7.4.9; 7.6.0 – 7.6.4 Vulnerable ·Fortinet
  • cpe:2.3:a:fortinet:fortiweb:8.0.0:*:*:*:*:*:*:* Versions 8.0.0 Vulnerable ·Fortinet

Remediation

No fixed version listed by the sources yet.

Timeline

  1. 2026-10-02 Threatist record created from CVE-2025-59719
  2. 2026-10-03 Alias added: GHSA-chq4-235q-jp7w

References

Advisory 1

  • TI-2026-20057 Authentication bypass in Fortinet FortiWeb KEVCVSS 3.1CRITICAL 9.4
  • TI-2025-39856 Path traversal in Fortinet FortiWeb KEVCVSS 3.1CRITICAL 9.4
  • TI-2025-18919 SQL injection in Fortinet FortiWeb KEVCVSS 3.1CRITICAL 9.8
  • TI-2025-35886 OS command injection in Fortinet FortiWeb KEVCVSS 3.1MEDIUM 6.7
  • TI-2021-05113 OS command injection in Fortinet FortiWeb CVSS 3.1HIGH 8.8
  • TI-2021-18960 Stack-based buffer overflow in Fortinet FortiWeb CVSS 3.1CRITICAL 9.8
See all 125 →

Sources

This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences