CVE-2026-66842
High · 8.8CVSS
8.8
EPSS
0.5%
Published
Sep 2, 2026
CISA due date
—
The record
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 packages
| Ecosystem | Package | Introduced | Fixed |
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