Vulnerability Intelligence Report
BIG-IP and BIG-IQ privilege escalation vulnerability
CVE-2026-42406
A vulnerability exists in BIG-IP and BIG-IQ systems where a highly privileged, authenticated attacker with at least the Certificate Manager role can modify configuration objects that allow running arbitrary commands. Note: Software versions which have reached End of Technical Support (EoTS) are not evaluated.
No Active Exploit Signals
CVSS Base Score
8.7
HIGH
Exploitability:2.3
Impact Score:5.8
EPSS Probability:0.15%
Executive Threat Verdict
Evaluating...
Evaluating Threat Landscape...
Assessing known weaponization, exploitation telemetry, and federal advisories.
Attack Surface
—
Authentication
—
Weaponization
—
SSVC Action
—
Weaknesses (CWE)
CWE-267 ↗CWE-267 Privilege Defined With Unsafe Actions
Affected Products & Versions
| Vendor | Product | Affected Versions |
|---|---|---|
| F5 | BIG-IP | 21.1.0 < * (unaffected), 21.0.0 < 21.0.0.2 (affected), 17.5.0 < 17.5.1.6 (affected), 17.1.0 < 17.1.3.2 (affected), 16.1.0 < * (affected) |
| F5 | BIG-IQ | 8.4.0 < * (affected) |
References & Technical Advisories
No reference links found.
Threat Intelligence Signals
EPSS Score
0.150%
GitHub Advisory
Identity & Timeline
| Status | PUBLISHED |
| Assigning Authority | F5, Inc. · Vendor · USA |
| Reserved | 2026-04-30T23:04:20 |
| Published | 2026-05-13T14:12:41 |
| Patch Date | 2026-05-13 |
| Last Updated | 2026-05-14T03:56:11 |
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