CVE-2021-21986

CRITICALImmediate

Published:May 26, 2021(4 years ago)

Modified:Nov 21, 2024

Remote ExploitNo Auth RequiredNo InteractionLow Complexity

Vulnerability 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.

Attack Characteristics

Network AccessLow ComplexityNo Auth NeededNo User Interaction

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AI analysis not yet available

Plain-English explanation, risk summary, and remediation steps will appear here once AI analysis is complete.

No Fix Known

No patch has been released yet. Apply workarounds or mitigations where available.

Affected Software

Vendor	Product	Versions	Fixed In
vmware	vcenter_server	-	-
vmware	vcenter_server	-	-
vmware	vcenter_server	-

Timeline

Published
CVE disclosed publicly
May 26, 20214 years ago
Last Modified
Most recent update
Nov 21, 20241 year ago
Indexed to CVEInsight
Added to this platform
Mar 29, 20261 month ago

References

http://packetstormsecurity.com/files/162812/VMware-Security-Advisory-2...Third Party Advisory
https://www.vmware.com/security/advisories/VMSA-2021-0010.htmlVendor Advisory
http://packetstormsecurity.com/files/162812/VMware-Security-Advisory-2...Third Party Advisory

CVSS Score

v3.1

9.8/ 10.0

CRITICAL

AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

At a Glance

Affected Products

References

vmware / vcenter_server

CVE-2021-21986

Vulnerability Description

Attack Characteristics

Affected Software

Timeline

References

CVSS Score

At a Glance

Official Sources

CVSS v3 Vector

Impact Analysis

CVE-2021-21986

✦ Vulnerability Description

Attack Characteristics

Affected Software

Timeline

References

CVSS Score

At a Glance

Official Sources

CVSS v3 Vector

Impact Analysis

Vulnerability Description