CVE-2021-22986

CRITICAL9.8

CISA KEV

Published 2021-03-31 · Updated 2026-06-17 · Source f5sirt@f5.com

Summary

CVE-2021-22986 is a critical-severity (CVSS 9.8) vulnerability in F5 BIG-IP and BIG-IQ Centralized Management. CISA added it to the Known Exploited Vulnerabilities catalog on November 3, 2021, which means exploitation in the wild has been confirmed; US federal agencies had to remediate it by November 17, 2021. CISA also lists it as known to be used in ransomware campaigns, so it should be prioritised accordingly. F5 has 8 vulnerabilities in the KEV catalog, 4 of them linked to ransomware.

All 8 known-exploited F5 vulnerabilities →

Description

On BIG-IP versions 16.0.x before 16.0.1.1, 15.1.x before 15.1.2.1, 14.1.x before 14.1.4, 13.1.x before 13.1.3.6, and 12.1.x before 12.1.5.3 amd BIG-IQ 7.1.0.x before 7.1.0.3 and 7.0.0.x before 7.0.0.2, the iControl REST interface has an unauthenticated remote command execution vulnerability. Note: Software versions which have reached End of Software Development (EoSD) are not evaluated.

CVSS vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

CWE-918CWE-918

CISA Known-Exploited Vulnerability

Product: F5 — BIG-IP and BIG-IQ Centralized Management

Name: F5 BIG-IP and BIG-IQ Centralized Management iControl REST Remote Code Execution Vulnerability

Date added: 2021-11-03 · Due: 2021-11-17

USED IN RANSOMWARE

Required action: Apply updates per vendor instructions.

References

View on NVD

More exploited F5 vulnerabilities

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BIG-IP — F5 BIG-IP Stack-Based Buffer Overflow Vulnerability
added 2026-03-27
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BIG-IP Configuration Utility — F5 BIG-IP Configuration Utility SQL Injection Vulnerability
added 2023-10-31
CVE-2023-46747
RANSOMWARE
BIG-IP Configuration Utility — F5 BIG-IP Configuration Utility Authentication Bypass Vulnerability
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BIG-IP — F5 BIG-IP Missing Authentication Vulnerability
added 2022-05-10
CVE-2021-22991
BIG-IP Traffic Management Microkernel — F5 BIG-IP Traffic Management Microkernel Buffer Overflow
added 2022-01-18

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