CVE-2022-39954: Fortinet Fortinac

Critical severity, CVSS 9.1. EPSS: 0.5% chance of exploitation in the next 30 days.

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.

Affected products

• Fortinet Fortinac: from 8.3.7, up to and including 9.2.7; from 9.4.0, before 9.4.2 (fixed in 9.4.2)
• Fortinet Fortinac-F: before 7.2.0 (fixed in 7.2.0)

Published 2023-02-16. Last modified 2026-06-17.