VULNERABILITY INTELLIGENCE
CVE-2026-66842
CVSS score8.8 HIGH
EPSS probability0.47%
CISA KEVNot currently listed
Published2026-09-02
Last modified2026-09-03
CVSS vectorCVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
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.
Weakness classification
- f5sirt@f5.com: CWE-918