CVE-2021-23036

Name: CVE-2021-23036
Creator: NVD / NIST
Published: 2021-09-14T19:15:07.643+00:00
License: https://creativecommons.org/publicdomain/zero/1.0/

HIGHCVSS 7.5/10EPSS 0.90%

Last modified Jun 17, 2026

CVE-2021-23036 is a high-severity vulnerability rated 7.5/10 on the CVSS scale. On version 16.0.x before 16.0.1.2, when a BIG-IP ASM and DataSafe profile are configured on a virtual server, undisclosed requests can cause the Traffic Management Microkernel (TMM) to terminate. Note: Software versions which have reached End of Technical Support (EoTS) are not evaluated.. EPSS estimates a 0.90% chance of exploitation in the next 30 days.

Description

On version 16.0.x before 16.0.1.2, when a BIG-IP ASM and DataSafe profile are configured on a virtual server, undisclosed requests can cause the Traffic Management Microkernel (TMM) to terminate. 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

0.90%

55.2th percentile

Probability of exploitation in the next 30 days. Learn more

Weakness Enumeration

Affected Software

Vendor	Product	Versions
F5	Big-Ip Advanced Web Application Firewall	>= 16.0.0, <= 16.0.1
F5	Big-Ip Application Security Manager	>= 16.0.0, <= 16.0.1
F5	Big-Ip Datasafe	>= 16.0.0, <= 16.0.1

References

https://support.f5.com/csp/article/K05043394Mitigation, Vendor Advisory
https://support.f5.com/csp/article/K05043394Mitigation, Vendor Advisory

Timeline

Published: Sep 14, 2021
Last Modified: Jun 17, 2026
Status: Modified

Frequently Asked Questions

What is CVE-2021-23036?

How severe is CVE-2021-23036?

CVE-2021-23036 has a CVSS score of 7.5/10 (HIGH severity). The EPSS model estimates a 0.90% probability of exploitation in the next 30 days.

How do I fix CVE-2021-23036?

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-2021-23036?

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

Scan your code now

Source: NVD / NIST