CVE-2021-21973

MEDIUMCISA KEV

5.3

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).

CVE Details

CVSS v3.1 Score5.3

SeverityMEDIUM

CVSS VectorCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N

Attack VectorNETWORK

ComplexityLOW

Privileges RequiredNONE

User InteractionNONE

Published2/24/2021

Last Modified10/30/2025

Sourcekev

Honeypot Sightings0

CISA KEV

VendorVMware

ProductvCenter Server and Cloud Foundation

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

KEV Date Added2022-03-07

Remediation Due Date2022-03-21

Ransomware UseUnknown

Affected Products

vmware:cloud_foundationvmware:vcenter_server

Weaknesses (CWE)

CWE-918CWE-918

References

https://www.vmware.com/security/advisories/VMSA-2021-0002.html(security@vmware.com)

https://www.vmware.com/security/advisories/VMSA-2021-0002.html(af854a3a-2127-422b-91ae-364da2661108)

https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2021-21973(134c704f-9b21-4f2e-91b3-4a467353bcc0)

IOC Correlations

No correlations recorded

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