Unrated severityCISA KEVNVD Advisory· Published Feb 24, 2021· Updated Oct 21, 2025
CVE-2021-21972
CVE-2021-21972
Description
The vSphere Client (HTML5) contains a remote code execution vulnerability in a vCenter Server plugin. A malicious actor with network access to port 443 may exploit this issue to execute commands with unrestricted privileges on the underlying operating system that hosts vCenter Server. This affects VMware vCenter Server (7.x before 7.0 U1c, 6.7 before 6.7 U3l and 6.5 before 6.5 U3n) and VMware Cloud Foundation (4.x before 4.2 and 3.x before 3.10.1.2).
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Affected products
2- Range: 7.x < 7.0 U1c, 6.7 < 6.7 U3l, 6.5 < 6.5 U3n
- Range: 4.x < 4.2, 3.x < 3.10.1.2
Patches
Vulnerability mechanics
References
4- packetstormsecurity.com/files/161590/VMware-vCenter-Server-7.0-Arbitrary-File-Upload.htmlmitrex_refsource_MISC
- packetstormsecurity.com/files/161695/VMware-vCenter-Server-File-Upload-Remote-Code-Execution.htmlmitrex_refsource_MISC
- packetstormsecurity.com/files/163268/VMware-vCenter-6.5-6.7-7.0-Remote-Code-Execution.htmlmitrex_refsource_MISC
- www.vmware.com/security/advisories/VMSA-2021-0002.htmlmitrex_refsource_CONFIRM
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