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CVE-2021-21973: VMware vCenter Server and Cloud Foundation Server Side Request Forgery (SSRF) Vulnerability
VMware vCenter Server and Cloud Foundation · in CISA KEV since 2022-03-07
2022-03-07added to KEV
2022-03-21federal remediation due date
87.64%EPSS exploit probability (30 days) 99.8th percentile
5.3 MEDIUMCVSS 3.1
Unknownknown ransomware use
376days from NVD publication to KEV
What it is
VMware vCenter Server and Cloud Foundation Server contain a SSRF vulnerability due to improper validation of URLs in a vCenter Server plugin. This allows for information disclosure.
Required action (CISA)
Apply updates per vendor instructions.
| CWE | CWE-20;CWE-918 |
|---|---|
| CVSS vector | CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N |
| NVD published | 2021-02-24 (Analyzed) |
Original records: NVD · CISA KEV · JSON: /api/cve/CVE-2021-21973.json · all KEV CVEs
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Get the full file: Exploited Vulnerabilities Brief – September 2026 ($29): this month's KEV additions ranked by EPSS, ransomware use and due date, ready to hand to a patch team. Checkout by Polar.
Get the full file: Exploited Vulnerabilities Brief – September 2026 ($29): this month's KEV additions ranked by EPSS, ransomware use and due date, ready to hand to a patch team. Checkout by Polar.