Description
BIG-IP has a vulnerability where an authenticated user of any role may be able to create administrative user accounts through an undisclosed request to Traffic Management User Interface (TMUI).
Impact:
This vulnerability may allow an authenticated attacker with network access to the BIG-IP management interface to escalate privileges by creating administrative accounts on the BIG-IP system. There is no data plane exposure; this is a control plane issue only.
Note: Software versions which have reached End of Technical Support (EoTS) are not evaluated.
Affected products
| Vendor | Product | Affected | Fixed |
|---|---|---|---|
| F5 | BIG-IP | 21.1.0 – < 21.1.0.1, 21.0.0 – < 21.0.0.3, 17.5.0 – < 17.5.1.8, 17.1.0 – < 17.1.3.4 | 21.1.0.1 |
| F5 | BIG-IQ | 8.4.0 – < 8.4.2.1 | 8.4.2.1 |
Advisories 1
- WID-SEC-2026-3158 F5 BIG-IP: Mehrere Schwachstellen BSI CERT-Bund (WID) · Sep 2, 2026
References
- https://my.f5.com/manage/s/article/K000162521 vendor-advisory