Vulnerability in F5 Big-ip_access_policy_manager

CVE-2021-23000

On BIG-IP versions 13.1.3.4-13.1.3.6 and 12.1.5.2, if the tmm.http.rfc.enforcement BigDB key is enabled in a BIG-IP system, or the Bad host header value is checked in the AFM HTTP security profile associated with a virtual server, in rare…

EPSS: 0.009 (56.8th 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

Public proof-of-concept exploits

References

Frequently asked questions

What is CVE-2021-23000?
CVE-2021-23000 is a high-severity vulnerability in F5 Big-ip_access_policy_manager. CVSS score: 7.5/10. Published 2021-03-31.
How severe is CVE-2021-23000?
High severity. CVSS v3 base score is 7.5 out of 10.
Is CVE-2021-23000 known to be exploited?
1 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.