CVE-2021-21972
CriticalActively exploited (CISA KEV)Known to be used in ransomware campaigns
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).
SeverityCritical
CVSS9.8
Exploit probability—
Product
VMware vCenter Server
PublishedFeb 24, 2021
First seenFeb 24, 2021
Added to KEVNov 3, 2021
Weakness typeCWE-22Path traversal
How to fix
CISA required action
Apply updates per vendor instructions.
CISA due date: Nov 17, 2021Update
- vmware cloud_foundation3.10.1.2, 4.2 or later
Affected products
| Product | Affected versions | Fixed in |
|---|---|---|
| vmware cloud_foundation | 3.0 ≤ v < 3.10.1.2, 4.0 ≤ v < 4.2 | 3.10.1.2, 4.2 |
| vmware vcenter_server | 6.5, 6.7, 7.0 | — |
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