VulnerabilityModified

CVE-2021-22989

CRITICAL 9.1EPSS 8.82%

Does this matter?

High impact if exploited, but EPSS currently rates exploitation as unlikely (8.82%). Schedule it in the normal patch cycle and watch for a rise in EPSS or a public exploit.

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, 12.1.x before 12.1.5.3, and 11.6.x before 11.6.5.3, when running in Appliance mode with Advanced WAF or BIG-IP ASM provisioned, the TMUI, also referred to as the Configuration utility, has an authenticated remote command execution vulnerability in undisclosed pages. Note: Software versions which have reached End of Software Development (EoSD) are not evaluated.

CVSS 3.1: 9.1 CRITICALCVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:C/C:H/I:H/A:H
EPSS: 8.82% probability · 95th percentile
Public exploits: None in Exploit-DB
CISA KEV: Not listed
Affected: f5/big-ip access policy manager · f5/big-ip advanced firewall manager · f5/big-ip advanced web application firewall · f5/big-ip analytics · f5/big-ip application acceleration manager · f5/big-ip application security manager · f5/big-ip ddos hybrid defender · f5/big-ip domain name system · f5/big-ip fraud protection service · f5/big-ip global traffic manager · f5/big-ip link controller · f5/big-ip local traffic manager · f5/big-ip policy enforcement manager · f5/ssl orchestrator
Source: f5sirt@f5.com

EPSS trend

EPSS 8.8% since 26 October 2026; no change recorded yet. The dashed line is the ten per cent mark our analysts treat as “patch before the next change window”. Points are recorded when the score first appears and whenever it moves by a percentage point or more.

References

https://support.f5.com/csp/article/K56142644Vendor Advisory
https://support.f5.com/csp/article/K56142644Vendor Advisory

Source: NVD record, EPSS from FIRST.org, KEV from CISA, exploits from Exploit-DB. Refreshed daily. Download this record as JSON.