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TI-2021-14584 Aliases CVE-2021-36166GHSA-6gm4-rphq-fcfx

An improper authentication vulnerability in FortiMail before 7.0.1 may allow a remote…

Priority MEDIUM 52CWE-330Published · Updated

Key facts

Attack vector
Network
Privileges required
None
User interaction
None
Attack complexity
Low
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 authentication vulnerability in FortiMail before 7.0.1 may allow a remote attacker to efficiently guess one administrative account's authentication token by means of the observation of certain system's properties.

Why it matters now

Exploitation None reported CISA SSVC · not in CISA KEV
EPSS 0.01472 73rd 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
FortinetFortinet FortiMailFortiMail before 7.0.1—No fix listedCNA
  • Fortinet FortiMail VendorFortinet Affected FortiMail before 7.0.1 Fixed in — No fix listed CNA

CPE configurations NVD · 2

CPEVersionsRoleVendor
cpe:2.3:a:fortinet:fortimail:*:*:*:*:*:*:*:*up to 5.4.12; 6.0.0 to before 6.0.12; 6.2.0 to before 6.2.8; 6.4.0 to before 6.4.6VulnerableFortinet
cpe:2.3:a:fortinet:fortimail:7.0.0:*:*:*:*:*:*:*7.0.0VulnerableFortinet
  • cpe:2.3:a:fortinet:fortimail:*:*:*:*:*:*:*:* Versions up to 5.4.12; 6.0.0 to before 6.0.12; 6.2.0 to before 6.2.8; 6.4.0 to before 6.4.6 Vulnerable ·Fortinet
  • cpe:2.3:a:fortinet:fortimail:7.0.0:*:*:*:*:*:*:* Versions 7.0.0 Vulnerable ·Fortinet

Remediation

No fixed version listed by the sources yet.

Timeline

  1. 2026-10-02 Threatist record created from CVE-2021-36166
  2. 2026-10-03 Alias added: GHSA-6gm4-rphq-fcfx

References

Advisory 1

  • TI-2026-65779 Path traversal in Fortinet FortiMail KEVCVSS 3.1CRITICAL 9.8
  • TI-2025-23811 Stack-based buffer overflow in Fortinet FortiNDR KEVCVSS 3.1CRITICAL 9.8
  • TI-2020-07433 Improper authentication in Fortinet FortiMail CVSS 3.1CRITICAL 9.8
  • TI-2021-06324 SQL injection in Fortinet FortiMail CVSS 3.1CRITICAL 9.8
  • TI-2023-25708 Improper access control in Fortinet FortiMail CVSS 3.1CRITICAL 9.0
  • TI-2021-12257 Improper input validation in Fortinet FortiMail CVSS 3.1CRITICAL 9.8
See all 46 →

Sources

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