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TI-2022-18920 Aliases CVE-2022-39954GHSA-6g49-f785-8862

XML external entity injection in Fortinet FortiNAC

Priority MEDIUM 46CWE-611Published · Updated

Key facts

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

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

Summary

An improper restriction of xml external entity reference in Fortinet FortiNAC version 9.4.0 through 9.4.1, FortiNAC version 9.2.0 through 9.2.7, FortiNAC version 9.1.0 through 9.1.8, FortiNAC version 8.8.0 through 8.8.11, FortiNAC version 8.7.0 through 8.7.6, FortiNAC version 8.6.0 through 8.6.5, FortiNAC version 8.5.0 through 8.5.4, FortiNAC version 8.3.7 allows attacker to read arbitrary files or trigger a denial of service via specifically crafted XML documents.

Why it matters now

Exploitation None reported CISA SSVC · not in CISA KEV
EPSS 0.00548 46th 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
Partial

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

Affected products

VendorProductAffected versionsFixed inStatusSource
FortinetFortiNAC9.4.0 – 9.4.1; 9.2.0 – 9.2.7; 9.1.0 – 9.1.8; 8.8.0 – 8.8.11; 8.7.0 – 8.7.6; 8.6.0 – 8.6.5; 8.5.0 – 8.5.4; 8.3.7—No fix listedCNA
  • FortiNAC VendorFortinet Affected 9.4.0 – 9.4.1; 9.2.0 – 9.2.7; 9.1.0 – 9.1.8; 8.8.0 – 8.8.11; 8.7.0 – 8.7.6; 8.6.0 – 8.6.5; 8.5.0 – 8.5.4; 8.3.7 Fixed in — No fix listed CNA

CPE configurations NVD · 2

CPEVersionsRoleVendor
cpe:2.3:a:fortinet:fortinac:*:*:*:*:*:*:*:*8.3.7 – 9.2.7; 9.4.0 to before 9.4.2VulnerableFortinet
cpe:2.3:a:fortinet:fortinac-f:*:*:*:*:*:*:*:*before 7.2.0VulnerableFortinet
  • cpe:2.3:a:fortinet:fortinac:*:*:*:*:*:*:*:* Versions 8.3.7 – 9.2.7; 9.4.0 to before 9.4.2 Vulnerable ·Fortinet
  • cpe:2.3:a:fortinet:fortinac-f:*:*:*:*:*:*:*:* Versions before 7.2.0 Vulnerable ·Fortinet

Remediation

No fixed version listed by the sources yet.

Timeline

  1. 2026-10-02 Threatist record created from CVE-2022-39954
  2. 2026-10-03 Alias added: GHSA-6g49-f785-8862

References

Advisory 1

  • TI-2022-18918 Exposure of resource to wrong sphere in Fortinet FortiNAC CVSS 3.1CRITICAL 9.8
  • TI-2023-16458 Deserialization of untrusted data in Fortinet FortiNAC CVSS 3.1CRITICAL 9.8
  • TI-2022-18002 Improper authorization in Fortinet FortiNAC CVSS 3.1CRITICAL 9.8
  • TI-2024-20852 Cross-site scripting in Fortinet FortiNAC CVSS 3.1CRITICAL 9.0
  • TI-2023-16459 Command injection in Fortinet FortiNAC CVSS 3.1MEDIUM 4.8
  • TI-2023-08814 Cross-site scripting in Fortinet FortiNAC CVSS 3.1CRITICAL 9.0
See all 29 →

Sources

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