CVE-2021-21985
KEV · ransomware Critical · CVSS 9.8- CVSS
- 9.8
- nvd
- EPSS
- —
- KEV
- Listed
- ransomware
- Class
- other
- CWE-918, CWE-20, CWE-470, CWE-918
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.
References
- http://packetstormsecurity.com/files/162812/VMware-Security-Advisory-2021-0010.html
- http://packetstormsecurity.com/files/163487/VMware-vCenter-Server-Virtual-SAN-Health-Check-Remote-Code-Execution.html
- https://www.vmware.com/security/advisories/VMSA-2021-0010.html
- http://packetstormsecurity.com/files/162812/VMware-Security-Advisory-2021-0010.html
- http://packetstormsecurity.com/files/163487/VMware-vCenter-Server-Virtual-SAN-Health-Check-Remote-Code-Execution.html
- https://www.vmware.com/security/advisories/VMSA-2021-0010.html
- https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2021-21985
Status: profiled · ingested 2026-08-12T06:00:50.000Z