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TI-2026-58004 Aliases CVE-2026-84393GHSA-7mc8-g97x-qg4j

A improper validation of certificate with host mismatch vulnerability in Fortinet FortiOS…

Priority LOW 34CWE-297Published · Updated

Key facts

Attack vector
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

A improper validation of certificate with host mismatch vulnerability in Fortinet FortiOS 7.6.1 through 7.6.6, FortiProxy 7.6.2 through 7.6.6 may allow attacker to information disclosure via <insert attack vector here>

Why it matters now

Exploitation None reported CISA SSVC · not in CISA KEV
EPSS 0.00278 20th 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
FortinetFortiOS7.6.1 – 7.6.6—No fix listedCNA
FortinetFortiProxy7.6.2 – 7.6.6—No fix listedCNA
  • FortiOS VendorFortinet Affected 7.6.1 – 7.6.6 Fixed in — No fix listed CNA
  • FortiProxy VendorFortinet Affected 7.6.2 – 7.6.6 Fixed in — No fix listed CNA

CPE names CNA · 11

CPEVersionsRoleVendor
cpe:2.3:o:fortinet:fortios:7.6.6:*:*:*:*:*:*:*7.6.6—Fortinet
cpe:2.3:o:fortinet:fortios:7.6.5:*:*:*:*:*:*:*7.6.5—Fortinet
cpe:2.3:o:fortinet:fortios:7.6.4:*:*:*:*:*:*:*7.6.4—Fortinet
cpe:2.3:o:fortinet:fortios:7.6.3:*:*:*:*:*:*:*7.6.3—Fortinet
cpe:2.3:o:fortinet:fortios:7.6.2:*:*:*:*:*:*:*7.6.2—Fortinet
cpe:2.3:o:fortinet:fortios:7.6.1:*:*:*:*:*:*:*7.6.1—Fortinet
cpe:2.3:a:fortinet:fortiproxy:7.6.6:*:*:*:*:*:*:*7.6.6—Fortinet
cpe:2.3:a:fortinet:fortiproxy:7.6.5:*:*:*:*:*:*:*7.6.5—Fortinet
cpe:2.3:a:fortinet:fortiproxy:7.6.4:*:*:*:*:*:*:*7.6.4—Fortinet
cpe:2.3:a:fortinet:fortiproxy:7.6.3:*:*:*:*:*:*:*7.6.3—Fortinet
  • cpe:2.3:o:fortinet:fortios:7.6.6:*:*:*:*:*:*:* Versions 7.6.6 — ·Fortinet
  • cpe:2.3:o:fortinet:fortios:7.6.5:*:*:*:*:*:*:* Versions 7.6.5 — ·Fortinet
  • cpe:2.3:o:fortinet:fortios:7.6.4:*:*:*:*:*:*:* Versions 7.6.4 — ·Fortinet
  • cpe:2.3:o:fortinet:fortios:7.6.3:*:*:*:*:*:*:* Versions 7.6.3 — ·Fortinet
  • cpe:2.3:o:fortinet:fortios:7.6.2:*:*:*:*:*:*:* Versions 7.6.2 — ·Fortinet
  • cpe:2.3:o:fortinet:fortios:7.6.1:*:*:*:*:*:*:* Versions 7.6.1 — ·Fortinet
  • cpe:2.3:a:fortinet:fortiproxy:7.6.6:*:*:*:*:*:*:* Versions 7.6.6 — ·Fortinet
  • cpe:2.3:a:fortinet:fortiproxy:7.6.5:*:*:*:*:*:*:* Versions 7.6.5 — ·Fortinet
  • cpe:2.3:a:fortinet:fortiproxy:7.6.4:*:*:*:*:*:*:* Versions 7.6.4 — ·Fortinet
  • cpe:2.3:a:fortinet:fortiproxy:7.6.3:*:*:*:*:*:*:* Versions 7.6.3 — ·Fortinet
Show 1 more CPE
CPEVersionsRoleVendor
cpe:2.3:a:fortinet:fortiproxy:7.6.2:*:*:*:*:*:*:*7.6.2—Fortinet
  • cpe:2.3:a:fortinet:fortiproxy:7.6.2:*:*:*:*:*:*:* Versions 7.6.2 — ·Fortinet

Remediation

No fixed version listed by the sources yet.

Timeline

  1. 2026-10-02 Threatist record created from CVE-2026-84393
  2. 2026-10-03 Alias added: GHSA-7mc8-g97x-qg4j

References

Other 1

  • TI-2026-65779 Path traversal in Fortinet FortiMail KEVCVSS 3.1CRITICAL 9.8
  • 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-2025-23811 Stack-based buffer overflow in Fortinet FortiNDR KEVCVSS 3.1CRITICAL 9.8
  • TI-2025-18919 SQL injection in Fortinet FortiWeb KEVCVSS 3.1CRITICAL 9.8
  • TI-2025-18911 Heap-based buffer overflow in Fortinet FortiSwitchManager KEVCVSS 3.1CRITICAL 9.8
See all 1170 →

Sources

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