What’s Vulnerable › Vulnerabilities

CVE-2022-39954

• Severity: critical (CVSS 9.1 v3.1)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 0.5% probability of exploitation in the next 30 days
• Public exploit or detection template: none known
• Published: 2023-02-16 · updated 2026-06-17
• Weakness: CWE-611

Description

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 through 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

How to fix

Upgrade to a fixed version: Fortinet FortiNAC 9.4.2; Fortinet FortiNAC-F 7.2.0. Check the vendor advisory for mitigations.

References

• https://fortiguard.com/psirt/FG-IR-22-304
• https://fortiguard.com/psirt/FG-IR-22-304

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