CVE-2022-23021

Name: CVE-2022-23021
Creator: NVD / NIST
Published: 2022-01-25T20:15:09.57+00:00
License: https://creativecommons.org/publicdomain/zero/1.0/

HIGHCVSS 7.5/10EPSS 0.92%

Last modified Jun 17, 2026

CVE-2022-23021 is a high-severity vulnerability rated 7.5/10 on the CVSS scale. On BIG-IP version 16.1.x before 16.1.2, when any of the following configurations are configured on a virtual server, undisclosed requests can cause the Traffic Management Microkernel (TMM) to terminate: HTTP redirect rule in an LTM policy, BIG-IP APM Access Profile, and Explicit HTTP Proxy in HTTP Profile. Note: Software versions which have reached End of Technical Support (EoTS) are not evaluated.. EPSS estimates a 0.92% chance of exploitation in the next 30 days.

Description

On BIG-IP version 16.1.x before 16.1.2, when any of the following configurations are configured on a virtual server, undisclosed requests can cause the Traffic Management Microkernel (TMM) to terminate: HTTP redirect rule in an LTM policy, BIG-IP APM Access Profile, and Explicit HTTP Proxy in HTTP Profile. Note: Software versions which have reached End of Technical Support (EoTS) are not evaluated.

Metrics

CVSS 3.1

7.5/10

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

EPSS Probability

0.92%

55.7th percentile

Probability of exploitation in the next 30 days. Learn more

Weakness Enumeration

Affected Software

Vendor	Product	Versions
F5	Big-Ip Access Policy Manager	>= 16.1.0, < 16.1.2
F5	Big-Ip Advanced Firewall Manager	>= 16.1.0, < 16.1.2
F5	Big-Ip Analytics	>= 16.1.0, < 16.1.2
F5	Big-Ip Application Acceleration Manager	>= 16.1.0, < 16.1.2
F5	Big-Ip Application Security Manager	>= 16.1.0, < 16.1.2
F5	Big-Ip Domain Name System	>= 16.1.0, < 16.1.2
F5	Big-Ip Fraud Protection Service	>= 16.1.0, < 16.1.2
F5	Big-Ip Global Traffic Manager	>= 16.1.0, < 16.1.2
F5	Big-Ip Link Controller	>= 16.1.0, < 16.1.2
F5	Big-Ip Local Traffic Manager	>= 16.1.0, < 16.1.2
F5	Big-Ip Policy Enforcement Manager	>= 16.1.0, < 16.1.2

References

https://support.f5.com/csp/article/K57111075Vendor Advisory
https://support.f5.com/csp/article/K57111075Vendor Advisory

Timeline

Published: Jan 25, 2022
Last Modified: Jun 17, 2026
Status: Modified

Frequently Asked Questions

What is CVE-2022-23021?

How severe is CVE-2022-23021?

CVE-2022-23021 has a CVSS score of 7.5/10 (HIGH severity). The EPSS model estimates a 0.92% probability of exploitation in the next 30 days.

How do I fix CVE-2022-23021?

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-2022-23021?

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

Scan your code now

Source: NVD / NIST