CVE-2021-21986

Description

The vSphere Client (HTML5) contains a vulnerability in a vSphere authentication mechanism for the Virtual SAN Health Check, Site Recovery, vSphere Lifecycle Manager, and VMware Cloud Director Availability plug-ins. A malicious actor with network access to port 443 on vCenter Server may perform actions allowed by the impacted plug-ins without authentication.

Category

9.8
CVSS
Severity: Critical
CVSS 3.1 •
CVSS 2.0 •
EPSS 1.68% Top 20%
Vendor Advisory vmware.com
Affected: n/a VMware vCenter Server and VMware Cloud Foundation
Published at:
Updated at:

References

Link Tags
https://www.vmware.com/security/advisories/VMSA-2021-0010.html vendor advisory
http://packetstormsecurity.com/files/162812/VMware-Security-Advisory-2021-0010.html vdb entry third party advisory

Frequently Asked Questions

What is the severity of CVE-2021-21986?
CVE-2021-21986 has been scored as a critical severity vulnerability.
How to fix CVE-2021-21986?
To fix CVE-2021-21986, 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-2021-21986 being actively exploited in the wild?
It is possible that CVE-2021-21986 is being exploited or will be exploited in a near future based on public information. According to its EPSS score, there is a ~2% probability that this vulnerability will be exploited by malicious actors in the next 30 days.
What software or system is affected by CVE-2021-21986?
CVE-2021-21986 affects n/a VMware vCenter Server and VMware Cloud Foundation.
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