What is CVE-2021-23015?

CVE-2021-23015 is a high-severity vulnerability in F5 Big-Ip Access Policy Manager, classified under Incorrect Authorization. CVSS score: 7.2/10. Published 2021-05-10.

How severe is CVE-2021-23015?

High severity. CVSS v3 base score is 7.2 out of 10.

Auth bypass in F5 Big-Ip Access Policy Manager

CVE-2021-23015

On BIG-IP 15.1.x before 15.1.3, 14.1.x before 14.1.4.2, 13.1.0.8 through 13.1.3.6, and all versions of 16.0.x, when running in Appliance Mode, an authenticated user assigned the 'Administrator' role may be able to bypass Appliance Mode restrictions utilizing undisclosed iControl REST endpoints. Note: Software versions which have reached End of Technical Support (EoTS) are not evaluated.

Vulnerability class: Broken Access Control

Published 2021-05-10 · last modified 2026-06-17.

CVSS v3 metric

CVSS v3 base score 7.2 (High). Vector: CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H.

EPSS exploit prediction

EPSS: 0.013 (70.3th percentile), scored 2026-09-30.

Low probability of exploitation in the next 30 days, but still tracked. 70th percentile — 70.3% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.

EPSS over last 30 days · oldest: 0.013 · newest: 0.013 · change: 0.000

Affected products

Weakness classification (CWE)

CWE-863 — Incorrect Authorization

References

support.f5.com/csp/article/K74151369 (Vendor Advisory)

Frequently asked questions

What is CVE-2021-23015?: CVE-2021-23015 is a high-severity vulnerability in F5 Big-Ip Access Policy Manager, classified under Incorrect Authorization. CVSS score: 7.2/10. Published 2021-05-10.
How severe is CVE-2021-23015?: High severity. CVSS v3 base score is 7.2 out of 10.