CVE-2023-22637

Name: CVE-2023-22637
Creator: NVD / NIST
Published: 2023-05-03T22:15:17.337+00:00
License: https://creativecommons.org/publicdomain/zero/1.0/

CRITICALCVSS 9/10EPSS 0.61%

Last modified Jun 17, 2026

CVE-2023-22637 is a critical-severity vulnerability rated 9/10 on the CVSS scale. An improper neutralization of input during web page generation ('Cross-site Scripting') vulnerability [CWE-79] in FortiNAC-F version 7.2.0, FortiNAC version 9.4.2 and below, 9.2 all versions, 9.1 all versions, 8.8 all versions, 8.7 all versions in License Management would permit an authenticated attacker to trigger remote code execution via crafted licenses.. EPSS estimates a 0.61% chance of exploitation in the next 30 days.

Description

An improper neutralization of input during web page generation ('Cross-site Scripting') vulnerability [CWE-79] in FortiNAC-F version 7.2.0, FortiNAC version 9.4.2 and below, 9.2 all versions, 9.1 all versions, 8.8 all versions, 8.7 all versions in License Management would permit an authenticated attacker to trigger remote code execution via crafted licenses.

Metrics

CVSS 3.1

9/10

CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:H/I:H/A:H

EPSS Probability

0.61%

44.6th percentile

Probability of exploitation in the next 30 days. Learn more

Weakness Enumeration

Affected Software

Vendor	Product	Versions
Fortinet	Fortinac	>= 8.7.0, < 9.4.3
Fortinet	Fortinac-F	7.2.0

References

https://fortiguard.com/psirt/FG-IR-23-013Vendor Advisory
https://fortiguard.com/psirt/FG-IR-23-013Vendor Advisory

Timeline

Published: May 3, 2023
Last Modified: Jun 17, 2026
Status: Modified

Frequently Asked Questions

What is CVE-2023-22637?

How severe is CVE-2023-22637?

CVE-2023-22637 has a CVSS score of 9/10 (CRITICAL severity). The EPSS model estimates a 0.61% probability of exploitation in the next 30 days.

How do I fix CVE-2023-22637?

Check the vendor references and advisories linked above for patched versions and mitigation guidance. You can also run a Strix scan to test if your systems are affected.

Are you affected by CVE-2023-22637?

Run a free Strix scan to check your systems for this vulnerability.

Scan your code now

Source: NVD / NIST