CVE-2021-23029

Name: CVE-2021-23029
Creator: NVD / NIST
Published: 2021-09-14T23:15:07.297+00:00
License: https://creativecommons.org/publicdomain/zero/1.0/

HIGHCVSS 8.8/10EPSS 0.85%

Last modified Jun 17, 2026

CVE-2021-23029 is a high-severity vulnerability rated 8.8/10 on the CVSS scale. On version 16.0.x before 16.0.1.2, insufficient permission checks may allow authenticated users with guest privileges to perform Server-Side Request Forgery (SSRF) attacks through F5 Advanced Web Application Firewall (WAF) and the BIG-IP ASM Configuration utility. Note: Software versions which have reached End of Technical Support (EoTS) are not evaluated.. EPSS estimates a 0.85% chance of exploitation in the next 30 days.

Description

On version 16.0.x before 16.0.1.2, insufficient permission checks may allow authenticated users with guest privileges to perform Server-Side Request Forgery (SSRF) attacks through F5 Advanced Web Application Firewall (WAF) and the BIG-IP ASM Configuration utility. Note: Software versions which have reached End of Technical Support (EoTS) are not evaluated.

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

0.85%

53.4th 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, < 16.0.1.2
F5	Big-Ip Application Security Manager	>= 16.0.0, < 16.0.1.2

References

https://support.f5.com/csp/article/K52420610Mitigation, Vendor Advisory
https://support.f5.com/csp/article/K52420610Mitigation, Vendor Advisory

Timeline

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

Frequently Asked Questions

What is CVE-2021-23029?

How severe is CVE-2021-23029?

CVE-2021-23029 has a CVSS score of 8.8/10 (HIGH severity). The EPSS model estimates a 0.85% probability of exploitation in the next 30 days.

How do I fix CVE-2021-23029?

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-2021-23029?

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

Scan your code now

Source: NVD / NIST