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TI-2026-17510 Aliases CVE-2026-21743GHSA-73jp-396j-hc6q

Missing authorization in Fortinet FortiAuthenticator

Priority LOW 32CWE-862Published · Updated

Key facts

Attack vector
Network
Privileges required
High
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-862.

Summary

A missing authorization vulnerability in Fortinet FortiAuthenticator 6.6.0 through 6.6.6, FortiAuthenticator 6.5 all versions, FortiAuthenticator 6.4 all versions, FortiAuthenticator 6.3 all versions may allow a read-only user to make modification to local users via a file upload to an unprotected endpoint.

Why it matters now

Exploitation None reported CISA SSVC · not in CISA KEV
EPSS 0.00373 31st 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
FortinetFortiAuthenticator6.6.0 – 6.6.6; 6.5.0 – 6.5.7; 6.4.0 – 6.4.11; 6.3.0 – 6.3.5—No fix listedCNA
  • FortiAuthenticator VendorFortinet Affected 6.6.0 – 6.6.6; 6.5.0 – 6.5.7; 6.4.0 – 6.4.11; 6.3.0 – 6.3.5 Fixed in — No fix listed CNA

CPE configurations NVD · 1

CPEVersionsRoleVendor
cpe:2.3:a:fortinet:fortiauthenticator:*:*:*:*:*:*:*:*6.3.0 to before 6.6.7VulnerableFortinet
  • cpe:2.3:a:fortinet:fortiauthenticator:*:*:*:*:*:*:*:* Versions 6.3.0 to before 6.6.7 Vulnerable ·Fortinet

Remediation

No fixed version listed by the sources yet.

Timeline

  1. 2026-10-02 Threatist record created from CVE-2026-21743
  2. 2026-10-03 Alias added: GHSA-73jp-396j-hc6q

References

Advisory 1

  • TI-2026-32249 Improper access control in Fortinet FortiAuthenticator CVSS 3.1CRITICAL 9.1
  • TI-2021-08066 OS command injection in Fortinet FortiAuthenticator CVSS 3.1HIGH 8.8
  • TI-2021-05114 Uncontrolled resource consumption in Fortinet FortiSandbox, FortiAuthenticator CVSS 3.1HIGH 7.5
  • TI-2013-05746 FortiGuard FortiAuthenticator before 3.0 allows remote administrators to gain privileges via the command line interface. CVSS 2.0HIGH 9.0
  • TI-2021-19130 Information disclosure in Fortinet FortiAuthenticator CVSS 3.1HIGH 8.3
  • TI-2015-01319 Fortinet FortiAuthenticator 3.0.0 has a password of (1) slony for the slony PostgreSQL… CVSS 2.0HIGH 7.5
See all 23 →

Sources

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