CVE-2023-22640

Name: CVE-2023-22640
Creator: NVD / NIST
Published: 2023-05-03T22:15:17.857+00:00
License: https://creativecommons.org/publicdomain/zero/1.0/

HIGHCVSS 8.8/10EPSS 0.89%

Last modified Jun 17, 2026

CVE-2023-22640 is a high-severity vulnerability rated 8.8/10 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 6.4.11, FortiOS version 6.2.0 through 6.2.13, FortiOS all versions 6.0, FortiProxy version 7.2.0 through 7.2.1, FortiProxy version 7.0.0 through 7.0.7, FortiProxy all versions 2.0, FortiProxy all versions 1.2, FortiProxy all versions 1.1, FortiProxy all versions 1.0 allows an authenticated attacker to execute unauthorized code or commands via specifically crafted requests.. EPSS estimates a 0.89% 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 6.4.11, FortiOS version 6.2.0 through 6.2.13, FortiOS all versions 6.0, FortiProxy version 7.2.0 through 7.2.1, FortiProxy version 7.0.0 through 7.0.7, FortiProxy all versions 2.0, FortiProxy all versions 1.2, FortiProxy all versions 1.1, FortiProxy all versions 1.0 allows an authenticated attacker to execute unauthorized code or commands via specifically crafted requests.

Metrics

CVSS 3.1

8.8/10

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

EPSS Probability

0.89%

54.8th percentile

Probability of exploitation in the next 30 days. Learn more

Weakness Enumeration

Affected Software

Vendor	Product	Versions
Fortinet	Fortiproxy	1.0.0
Fortinet	Fortiproxy	1.1.0
Fortinet	Fortiproxy	1.2.0
Fortinet	Fortiproxy	2.0.0
Fortinet	Fortios	>= 6.0.0, <= 6.0.16
Fortinet	Fortios	>= 6.2.0, < 6.2.14
Fortinet	Fortios	>= 6.4.0, < 6.4.12
Fortinet	Fortios	>= 7.0.0, < 7.0.11
Fortinet	Fortios	>= 7.2.0, < 7.2.4

References

https://fortiguard.com/psirt/FG-IR-22-475Vendor Advisory
https://fortiguard.com/psirt/FG-IR-22-475Vendor Advisory

Timeline

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

Frequently Asked Questions

What is CVE-2023-22640?

How severe is CVE-2023-22640?

CVE-2023-22640 has a CVSS score of 8.8/10 (HIGH severity). The EPSS model estimates a 0.89% probability of exploitation in the next 30 days.

How do I fix CVE-2023-22640?

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-2023-22640?

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

Scan your code now

Source: NVD / NIST