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TI-2025-18915 Aliases CVE-2025-25253GHSA-9gmg-hfch-x94j

An Improper Validation of Certificate with Host Mismatch vulnerability [CWE-297] in…

Priority LOW 31CWE-297Published · Updated

Key facts

Attack vector
Adjacent network
Privileges required
None
User interaction
None
Attack complexity
High
Impact type
—
Confidentiality · integrity · availability
High · High · High
Fix status
No fix listed

Attack profile from CVSS 3.1 · CNA. Fix status from CNA.

Summary

An Improper Validation of Certificate with Host Mismatch vulnerability [CWE-297] in FortiProxy version 7.6.1 and below, version 7.4.8 and below, 7.2 all versions, 7.0 all versions and FortiOS version 7.6.2 and below, version 7.4.8 and below, 7.2 all versions, 7.0 all versions ZTNA proxy may allow an unauthenticated attacker in a man-in-the middle position to intercept and tamper with connections to the ZTNA proxy

Why it matters now

Exploitation None reported CISA SSVC · not in CISA KEV
EPSS 0.00114 1st 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
No
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
FortinetFortiProxy7.6.0 – 7.6.1; 7.4.0 – 7.4.8; 7.2.0 – 7.2.15; 7.0.0 – 7.0.22—No fix listedCNA
FortinetFortiOS7.6.0 – 7.6.2; 7.4.0 – 7.4.8; 7.2.0 – 7.2.12; 7.0.0 – 7.0.18—No fix listedCNA
FortinetFortiPAM1.4.1—No fix listedCNA
  • FortiProxy VendorFortinet Affected 7.6.0 – 7.6.1; 7.4.0 – 7.4.8; 7.2.0 – 7.2.15; 7.0.0 – 7.0.22 Fixed in — No fix listed CNA
  • FortiOS VendorFortinet Affected 7.6.0 – 7.6.2; 7.4.0 – 7.4.8; 7.2.0 – 7.2.12; 7.0.0 – 7.0.18 Fixed in — No fix listed CNA
  • FortiPAM VendorFortinet Affected 1.4.1 Fixed in — No fix listed CNA

CPE configurations NVD · 2

CPEVersionsRoleVendor
cpe:2.3:a:fortinet:fortiproxy:*:*:*:*:*:*:*:*7.0.0 to before 7.4.9; 7.6.0 to before 7.6.2VulnerableFortinet
cpe:2.3:o:fortinet:fortios:*:*:*:*:*:*:*:*7.0.0 to before 7.4.9; 7.6.0 to before 7.6.3VulnerableFortinet
  • cpe:2.3:a:fortinet:fortiproxy:*:*:*:*:*:*:*:* Versions 7.0.0 to before 7.4.9; 7.6.0 to before 7.6.2 Vulnerable ·Fortinet
  • cpe:2.3:o:fortinet:fortios:*:*:*:*:*:*:*:* Versions 7.0.0 to before 7.4.9; 7.6.0 to before 7.6.3 Vulnerable ·Fortinet

Remediation

No fixed version listed by the sources yet.

Timeline

  1. 2026-10-02 Threatist record created from CVE-2025-25253
  2. 2026-10-03 Alias added: GHSA-9gmg-hfch-x94j

References

Advisory 1

  • TI-2026-20057 Authentication bypass in Fortinet FortiWeb KEVCVSS 3.1CRITICAL 9.4
  • TI-2025-18911 Heap-based buffer overflow in Fortinet FortiSwitchManager KEVCVSS 3.1CRITICAL 9.8
  • TI-2024-36904 Authentication bypass in Fortinet FortiOS KEVCVSS 3.1CRITICAL 9.8
  • TI-2024-15234 A use of externally-controlled format string in Fortinet FortiOS versions 7.4.0 through… KEVCVSS 3.1CRITICAL 9.8
  • TI-2024-14448 Out-of-bounds write in Fortinet FortiOS KEVCVSS 3.1CRITICAL 9.8
  • TI-2023-12585 Heap-based buffer overflow in Fortinet FortiOS-6K7K KEVCVSS 3.1CRITICAL 9.8
See all 276 →

Sources

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