Vulnerability Intelligence Report
CVE-2021-21994
SFCB (Small Footprint CIM Broker) as used in ESXi has an authentication bypass vulnerability. A malicious actor with network access to port 5989 on ESXi may exploit this issue to bypass SFCB authentication by sending a specially crafted request.
No Active Exploit Signals
CVSS Base Score
9.8
CRITICAL
EPSS Probability:1.16%
Executive Threat Verdict
Evaluating...
Evaluating Threat Landscape...
Assessing known weaponization, exploitation telemetry, and federal advisories.
Attack Surface
—
Authentication
—
Weaponization
—
SSVC Action
—
Affected Products & Versions
| Vendor | Product | Affected Versions |
|---|---|---|
| vmware | cloud_foundation | all |
| vmware | esxi | 6.5, 6.7, 7.0 |
References & Technical Advisories
No reference links found.
Threat Intelligence Signals
EPSS Score
1.158%
GitHub Advisory
Identity & Timeline
| Status | PUBLISHED |
| Assigning Authority | VMware by Broadcom · Vendor · USA |
| Reserved | 2021-01-04T00:00:00 |
| Published | 2021-07-13T18:05:43 |
| Last Updated | 2024-08-03T18:30:23 |
Community Chatter & Buzz