Server-Side Request Forgery (SSRF) in vCenter Server and Cloud Foundation - CVE-2021-21973
Published: February 24, 2021 / Updated: March 8, 2022
Vulnerability identifier: #VU50899
CSH Severity: Medium
CVSS v4.0: CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:L/VI:N/VA:N/SC:L/SI:N/SA:N/E:A/U:Green
CVE-ID: CVE-2021-21973
CWE-ID: CWE-918
Exploitation vector: Remote access
Exploit availability:
The vulnerability is being exploited in the wild
Vendor: VMware, Inc
Affected software:
vCenter Server
Cloud Foundation
vCenter Server
Cloud Foundation
Detailed vulnerability description
The disclosed vulnerability allows a remote attacker to perform SSRF attacks.
The vulnerability exists due to insufficient validation of user-supplied input in vSphere Client. A remote non-authenticated attacker can send a specially crafted HTTP request and trick the application to initiate requests to arbitrary systems.
Successful exploitation of this vulnerability may allow a remote attacker gain access to sensitive data, located in the local network or send malicious requests to other servers from the vulnerable system.
How to mitigate CVE-2021-21973
Install updates from vendor's website.