Description · from the CVE record

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).

Affected

ProductAffectedFixed inSource
VMware vCenter Server7.x before 7.0 U1c–CNA
VMware vCenter Server6.7 before 6.7 U3l–CNA
VMware vCenter Server6.5 before 6.5 U3n–CNA
VMware Cloud Foundation4.x before 4.2–CNA
VMware Cloud Foundation3.x before 3.10.1.2–CNA

Scores by source

CISA ADP9.8CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
CISA ADPSSVCExploitation: active · Automatable: yes · Technical impact: total

References

refvmware.com/security/advisories/VMSA-2021-0002.htmlrefpacketstormsecurity.com/files/161590/VMware-vCenter-Server-7.0-Arbitrary-File-Upload.htmlrefpacketstormsecurity.com/files/161695/VMware-vCenter-Server-File-Upload-Remote-Code-Execution.htmlrefpacketstormsecurity.com/files/163268/VMware-vCenter-6.5-6.7-7.0-Remote-Code-Execution.htmlrefcisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2021-21972kevcisa.gov/known-exploited-vulnerabilities-catalog