VULNERABILITY INTELLIGENCE

CVE-2021-21973

CVSS score5.3 MEDIUM
EPSS probability88.01%
CISA KEVKnown exploited vulnerability
Published2021-02-24
Last modified2026-06-17
CVSS vectorCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N

Known Exploited Vulnerability

VMware vCenter Server and Cloud Foundation Server Side Request Forgery (SSRF) Vulnerability

Vendor / product: VMware / vCenter Server and Cloud Foundation

Description

The vSphere Client (HTML5) contains an SSRF (Server Side Request Forgery) vulnerability due to improper validation of URLs in a vCenter Server plugin. A malicious actor with network access to port 443 may exploit this issue by sending a POST request to vCenter Server plugin leading to information disclosure. 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).

Weakness classification

  • nvd@nist.gov: CWE-918
  • 134c704f-9b21-4f2e-91b3-4a467353bcc0: CWE-918

Primary references