CVE-2021-23054

Name: CVE-2021-23054
Creator: NVD / NIST
Published: 2021-09-27T11:15:07.527+00:00
License: https://creativecommons.org/publicdomain/zero/1.0/

MEDIUMCVSS 6.1/10EPSS 0.56%

Last modified Jun 17, 2026

CVE-2021-23054 is a medium-severity vulnerability rated 6.1/10 on the CVSS scale. On version 16.x before 16.1.0, 15.1.x before 15.1.4, 14.1.x before 14.1.4.4, and all versions of 13.1.x, 12.1.x, and 11.6.x, a reflected cross-site scripting (XSS) vulnerability exists in the resource information page for authenticated users when a full webtop is configured on the BIG-IP APM system. Note: Software versions which have reached End of Technical Support (EoTS) are not evaluated.. EPSS estimates a 0.56% chance of exploitation in the next 30 days.

Description

On version 16.x before 16.1.0, 15.1.x before 15.1.4, 14.1.x before 14.1.4.4, and all versions of 13.1.x, 12.1.x, and 11.6.x, a reflected cross-site scripting (XSS) vulnerability exists in the resource information page for authenticated users when a full webtop is configured on the BIG-IP APM system. Note: Software versions which have reached End of Technical Support (EoTS) are not evaluated.

Metrics

CVSS 3.1

6.1/10

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

EPSS Probability

0.56%

42.4th percentile

Probability of exploitation in the next 30 days. Learn more

Weakness Enumeration

Affected Software

Vendor	Product	Versions
F5	Big-Ip Access Policy Manager	>= 11.6.1, <= 11.6.5
F5	Big-Ip Access Policy Manager	>= 12.1.0, <= 12.1.6
F5	Big-Ip Access Policy Manager	>= 13.1.0, <= 13.1.4
F5	Big-Ip Access Policy Manager	>= 14.1.0, < 14.1.4.4
F5	Big-Ip Access Policy Manager	>= 15.1.0, < 15.1.4
F5	Big-Ip Access Policy Manager	>= 16.0.0, < 16.0.1

References

https://support.f5.com/csp/article/K41997459Mitigation, Vendor Advisory
https://support.f5.com/csp/article/K41997459Mitigation, Vendor Advisory

Timeline

Published: Sep 27, 2021
Last Modified: Jun 17, 2026
Status: Modified

Frequently Asked Questions

What is CVE-2021-23054?

How severe is CVE-2021-23054?

CVE-2021-23054 has a CVSS score of 6.1/10 (MEDIUM severity). The EPSS model estimates a 0.56% probability of exploitation in the next 30 days.

How do I fix CVE-2021-23054?

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-2021-23054?

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

Scan your code now

Source: NVD / NIST