CVE-2021-21994

Description

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.

Category

9.8
CVSS
Severity: Critical
CVSS 3.1 •
CVSS 2.0 •
EPSS 0.09%
Vendor Advisory vmware.com
Affected: n/a VMware ESXi and VMware Cloud Foundation
Published at:
Updated at:

References

Link Tags
https://www.vmware.com/security/advisories/VMSA-2021-0014.html vendor advisory

Frequently Asked Questions

What is the severity of CVE-2021-21994?
CVE-2021-21994 has been scored as a critical severity vulnerability.
How to fix CVE-2021-21994?
To fix CVE-2021-21994, make sure you are using an up-to-date version of the affected component(s) by checking the vendor release notes. As for now, there are no other specific guidelines available.
Is CVE-2021-21994 being actively exploited in the wild?
As for now, there are no information to confirm that CVE-2021-21994 is being actively exploited. According to its EPSS score, there is a ~0% probability that this vulnerability will be exploited by malicious actors in the next 30 days.
What software or system is affected by CVE-2021-21994?
CVE-2021-21994 affects n/a VMware ESXi and VMware Cloud Foundation.
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