Critical severity9.8CISA KEVNVD Advisory· Published May 26, 2021· Updated Aug 12, 2026
CVE-2021-21985
CVE-2021-21985
Description
The vSphere Client (HTML5) contains a remote code execution vulnerability due to lack of input validation in the Virtual SAN Health Check plug-in which is enabled by default in vCenter Server. 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.
AI Insight
LLM-synthesized narrative grounded in this CVE's description and references.
Affected products
55cpe:2.3:a:vmware:vcenter_server:6.5:-:*:*:*:*:*:*+ 51 more
- cpe:2.3:a:vmware:vcenter_server:6.5:-:*:*:*:*:*:*
- cpe:2.3:a:vmware:vcenter_server:6.5:a:*:*:*:*:*:*
- cpe:2.3:a:vmware:vcenter_server:6.5:b:*:*:*:*:*:*
- cpe:2.3:a:vmware:vcenter_server:6.5:c:*:*:*:*:*:*
- cpe:2.3:a:vmware:vcenter_server:6.5:d:*:*:*:*:*:*
- cpe:2.3:a:vmware:vcenter_server:6.5:e:*:*:*:*:*:*
- cpe:2.3:a:vmware:vcenter_server:6.5:f:*:*:*:*:*:*
- cpe:2.3:a:vmware:vcenter_server:6.5:update1:*:*:*:*:*:*
- cpe:2.3:a:vmware:vcenter_server:6.5:update1b:*:*:*:*:*:*
- cpe:2.3:a:vmware:vcenter_server:6.5:update1c:*:*:*:*:*:*
- cpe:2.3:a:vmware:vcenter_server:6.5:update1d:*:*:*:*:*:*
- cpe:2.3:a:vmware:vcenter_server:6.5:update1e:*:*:*:*:*:*
- cpe:2.3:a:vmware:vcenter_server:6.5:update1g:*:*:*:*:*:*
- cpe:2.3:a:vmware:vcenter_server:6.5:update2:*:*:*:*:*:*
- cpe:2.3:a:vmware:vcenter_server:6.5:update2b:*:*:*:*:*:*
- cpe:2.3:a:vmware:vcenter_server:6.5:update2c:*:*:*:*:*:*
- cpe:2.3:a:vmware:vcenter_server:6.5:update2d:*:*:*:*:*:*
- cpe:2.3:a:vmware:vcenter_server:6.5:update2g:*:*:*:*:*:*
- cpe:2.3:a:vmware:vcenter_server:6.5:update3:*:*:*:*:*:*
- cpe:2.3:a:vmware:vcenter_server:6.5:update3d:*:*:*:*:*:*
- cpe:2.3:a:vmware:vcenter_server:6.5:update3f:*:*:*:*:*:*
- cpe:2.3:a:vmware:vcenter_server:6.5:update3k:*:*:*:*:*:*
- cpe:2.3:a:vmware:vcenter_server:6.5:update3n:*:*:*:*:*:*
- cpe:2.3:a:vmware:vcenter_server:6.7:-:*:*:*:*:*:*
- cpe:2.3:a:vmware:vcenter_server:6.7:a:*:*:*:*:*:*
- cpe:2.3:a:vmware:vcenter_server:6.7:b:*:*:*:*:*:*
- cpe:2.3:a:vmware:vcenter_server:6.7:d:*:*:*:*:*:*
- cpe:2.3:a:vmware:vcenter_server:6.7:update1:*:*:*:*:*:*
- cpe:2.3:a:vmware:vcenter_server:6.7:update1b:*:*:*:*:*:*
- cpe:2.3:a:vmware:vcenter_server:6.7:update2:*:*:*:*:*:*
- cpe:2.3:a:vmware:vcenter_server:6.7:update2a:*:*:*:*:*:*
- cpe:2.3:a:vmware:vcenter_server:6.7:update2c:*:*:*:*:*:*
- cpe:2.3:a:vmware:vcenter_server:6.7:update3:*:*:*:*:*:*
- cpe:2.3:a:vmware:vcenter_server:6.7:update3a:*:*:*:*:*:*
- cpe:2.3:a:vmware:vcenter_server:6.7:update3b:*:*:*:*:*:*
- cpe:2.3:a:vmware:vcenter_server:6.7:update3f:*:*:*:*:*:*
- cpe:2.3:a:vmware:vcenter_server:6.7:update3g:*:*:*:*:*:*
- cpe:2.3:a:vmware:vcenter_server:6.7:update3j:*:*:*:*:*:*
- cpe:2.3:a:vmware:vcenter_server:6.7:update3l:*:*:*:*:*:*
- cpe:2.3:a:vmware:vcenter_server:6.7:update3m:*:*:*:*:*:*
- cpe:2.3:a:vmware:vcenter_server:7.0:-:*:*:*:*:*:*
- cpe:2.3:a:vmware:vcenter_server:7.0:a:*:*:*:*:*:*
- cpe:2.3:a:vmware:vcenter_server:7.0:b:*:*:*:*:*:*
- cpe:2.3:a:vmware:vcenter_server:7.0:c:*:*:*:*:*:*
- cpe:2.3:a:vmware:vcenter_server:7.0:d:*:*:*:*:*:*
- cpe:2.3:a:vmware:vcenter_server:7.0:update1:*:*:*:*:*:*
- cpe:2.3:a:vmware:vcenter_server:7.0:update1a:*:*:*:*:*:*
- cpe:2.3:a:vmware:vcenter_server:7.0:update1c:*:*:*:*:*:*
- cpe:2.3:a:vmware:vcenter_server:7.0:update1d:*:*:*:*:*:*
- cpe:2.3:a:vmware:vcenter_server:7.0:update2:*:*:*:*:*:*
- cpe:2.3:a:vmware:vcenter_server:7.0:update2a:*:*:*:*:*:*
- (no CPE)
- VMware/vSphere Clientdescription
Patches
Vulnerability mechanics
References
4- packetstormsecurity.com/files/163487/VMware-vCenter-Server-Virtual-SAN-Health-Check-Remote-Code-Execution.htmlnvdExploitThird Party AdvisoryVDB Entry
- packetstormsecurity.com/files/162812/VMware-Security-Advisory-2021-0010.htmlnvdThird Party AdvisoryVDB Entry
- www.vmware.com/security/advisories/VMSA-2021-0010.htmlnvdVendor Advisory
- www.cisa.gov/known-exploited-vulnerabilities-catalognvdUS Government Resource
News mentions
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