CVE-2023-22639

Name: CVE-2023-22639
Creator: NVD / NIST
Published: 2023-06-13T09:15:16.177+00:00
License: https://creativecommons.org/publicdomain/zero/1.0/

HIGHCVSS 7.8/10EPSS 0.19%

Last modified Jun 17, 2026

CVE-2023-22639 is a high-severity vulnerability rated 7.8/10 on the CVSS scale. A out-of-bounds write in Fortinet FortiOS version 7.2.0 through 7.2.3, FortiOS version 7.0.0 through 7.0.10, FortiOS version 6.4.0 through 6.4.12, FortiOS all versions 6.2, FortiOS all versions 6.0, FortiProxy version 7.2.0 through 7.2.2, FortiProxy version 7.0.0 through 7.0.8, FortiProxy all versions 2.0, FortiProxy all versions 1.2, FortiProxy all versions 1.1, FortiProxy all versions 1.0 allows attacker to escalation of privilege via specifically crafted commands.. EPSS estimates a 0.19% chance of exploitation in the next 30 days.

Description

A out-of-bounds write in Fortinet FortiOS version 7.2.0 through 7.2.3, FortiOS version 7.0.0 through 7.0.10, FortiOS version 6.4.0 through 6.4.12, FortiOS all versions 6.2, FortiOS all versions 6.0, FortiProxy version 7.2.0 through 7.2.2, FortiProxy version 7.0.0 through 7.0.8, FortiProxy all versions 2.0, FortiProxy all versions 1.2, FortiProxy all versions 1.1, FortiProxy all versions 1.0 allows attacker to escalation of privilege via specifically crafted commands.

Metrics

CVSS 3.1

7.8/10

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

EPSS Probability

0.19%

8.5th percentile

Probability of exploitation in the next 30 days. Learn more

Weakness Enumeration

Affected Software

Vendor	Product	Versions
Fortinet	Fortiproxy	>= 1.0.0, <= 1.0.7
Fortinet	Fortiproxy	>= 1.1.0, <= 1.1.6
Fortinet	Fortiproxy	>= 1.2.0, <= 1.2.13
Fortinet	Fortiproxy	>= 2.0.0, <= 2.0.12
Fortinet	Fortiproxy	>= 7.0.0, <= 7.0.8
Fortinet	Fortiproxy	7.2.0
Fortinet	Fortiproxy	7.2.1
Fortinet	Fortiproxy	7.2.2
Fortinet	Fortios	>= 6.0.0, <= 6.0.17
Fortinet	Fortios	>= 6.2.0, <= 6.2.15
Fortinet	Fortios	>= 6.4.0, <= 6.4.12
Fortinet	Fortios	>= 7.0.0, <= 7.0.9
Fortinet	Fortios	>= 7.2.0, <= 7.2.3

References

https://fortiguard.com/psirt/FG-IR-22-494Vendor Advisory
https://fortiguard.com/psirt/FG-IR-22-494Vendor Advisory

Timeline

Published: Jun 13, 2023
Last Modified: Jun 17, 2026
Status: Modified

Frequently Asked Questions

What is CVE-2023-22639?

How severe is CVE-2023-22639?

CVE-2023-22639 has a CVSS score of 7.8/10 (HIGH severity). The EPSS model estimates a 0.19% probability of exploitation in the next 30 days.

How do I fix CVE-2023-22639?

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-2023-22639?

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

Scan your code now

Source: NVD / NIST