What is CVE-2021-22974?

CVE-2021-22974 is a high-severity vulnerability in F5 Big-Ip Access Policy Manager, classified under Concurrent Execution using Shared Resource with Improper Synchronization (Race Condition). CVSS score: 7.5/10. Published 2021-02-12.

How severe is CVE-2021-22974?

High severity. CVSS v3 base score is 7.5 out of 10.

Vulnerability in F5 Big-Ip Access Policy Manager

CVE-2021-22974

On BIG-IP version 16.0.x before 16.0.1.1, 15.1.x before 15.1.2, 14.1.x before 14.1.3.1, and 13.1.x before 13.1.3.6 and all versions of BIG-IQ 7.x and 6.x, an authenticated attacker with access to iControl REST over the control plane may be able to take advantage of a race condition to execute commands with an elevated privilege level. This vulnerability is due to an incomplete fix for CVE-2017-6167. Note: Software versions which have reached End of Software Development (EoSD) are not evaluated.

Vulnerability class: Race Condition

Published 2021-02-12 · last modified 2026-06-17.

CVSS v3 metric

CVSS v3 base score 7.5 (High). Vector: CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H.

EPSS exploit prediction

EPSS: 0.008 (56.0th percentile), scored 2026-09-30.

Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 56th percentile — 56.0% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.

EPSS over last 30 days · oldest: 0.008 · newest: 0.008 · change: +0.000

Affected products

Weakness classification (CWE)

CWE-362 — Concurrent Execution using Shared Resource with Improper Synchronization (Race Condition)

References

support.f5.com/csp/article/K68652018 (Vendor Advisory)

Frequently asked questions

What is CVE-2021-22974?: CVE-2021-22974 is a high-severity vulnerability in F5 Big-Ip Access Policy Manager, classified under Concurrent Execution using Shared Resource with Improper Synchronization (Race Condition). CVSS score: 7.5/10. Published 2021-02-12.
How severe is CVE-2021-22974?: High severity. CVSS v3 base score is 7.5 out of 10.