CVE-2021-22995

Name: CVE-2021-22995
Creator: NVD / NIST
Published: 2021-03-31T17:15:13.073+00:00
License: https://creativecommons.org/publicdomain/zero/1.0/

HIGHCVSS 7.5/10EPSS 0.87%

Last modified Jun 17, 2026

CVE-2021-22995 is a high-severity vulnerability rated 7.5/10 on the CVSS scale. On all 7.x and 6.x versions (fixed in 8.0.0), BIG-IQ high availability (HA) when using a Quorum device for automatic failover does not implement any form of authentication with the Corosync daemon. Note: Software versions which have reached End of Software Development (EoSD) are not evaluated.. EPSS estimates a 0.87% chance of exploitation in the next 30 days.

Description

On all 7.x and 6.x versions (fixed in 8.0.0), BIG-IQ high availability (HA) when using a Quorum device for automatic failover does not implement any form of authentication with the Corosync daemon. Note: Software versions which have reached End of Software Development (EoSD) are not evaluated.

Metrics

CVSS 3.1

7.5/10

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

EPSS Probability

0.87%

54.3th percentile

Probability of exploitation in the next 30 days. Learn more

Weakness Enumeration

CWE-306

Affected Software

Vendor	Product	Versions
F5	Big-Iq Centralized Management	>= 6.0.0, <= 6.1.0
F5	Big-Iq Centralized Management	>= 7.0.0, <= 7.1.0

References

https://support.f5.com/csp/article/K13155201Vendor Advisory
https://support.f5.com/csp/article/K13155201Vendor Advisory

Timeline

Published: Mar 31, 2021
Last Modified: Jun 17, 2026
Status: Modified

Frequently Asked Questions

What is CVE-2021-22995?

How severe is CVE-2021-22995?

CVE-2021-22995 has a CVSS score of 7.5/10 (HIGH severity). The EPSS model estimates a 0.87% probability of exploitation in the next 30 days.

How do I fix CVE-2021-22995?

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-2021-22995?

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

Scan your code now

Source: NVD / NIST