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CVE-2026-66842

BIG-IP and BIG-IQ Configuration utility vulnerability PUBLISHED

Description (CNA)

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 (CNA)

Vendor / productVersions
F5 / BIG-IPaffected 21.1.0 before 21.1.0.1; affected 21.0.0 before 21.0.0.3; affected 17.5.0 before 17.5.1.8; affected 17.1.0 before 17.1.3.4
F5 / BIG-IQaffected 8.4.0 before 8.4.2.1

CWE

CWE-918

References

ADP enrichment

CISA-ADP

No English description supplied.

No references supplied.