How severe is CVE-2021-22996?

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

Is CVE-2021-22996 known to be exploited?

1 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.

Vulnerability in F5 Big-Iq Centralized Management

CVE-2021-22996

On all 7.x versions (fixed in 8.0.0), when set up for auto failover, a BIG-IQ Data Collection Device (DCD) cluster member that receives an undisclosed message may cause the corosync process to abort. This behavior may lead to a denial-of-service (DoS) and impact the stability of a BIG-IQ high availability (HA) cluster. Note: Software versions which have reached End of Software Development (EoSD) are not evaluated.

EPSS: 0.010 (58.4th percentile) — read the EPSS interpretation.

CVSS v3 metric

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

Affected products

F5 Big-iq_centralized_management
N/a Big-iq — versions All 7.x versons

Public proof-of-concept exploits

DNTYO/F5_

References

f5sirt@f5.com (x_refsource_MISC, Vendor Advisory)

Frequently asked questions

What is CVE-2021-22996?: CVE-2021-22996 is a high-severity vulnerability in F5 Big-Iq Centralized Management. CVSS score: 7.5/10. Published 2021-03-31.
How severe is CVE-2021-22996?: High severity. CVSS v3 base score is 7.5 out of 10.
Is CVE-2021-22996 known to be exploited?: 1 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.