What is CVE-2021-21973?

CVE-2021-21973 is a vulnerability in Vmware Cloud Foundation. Published 2021-02-24.

Is CVE-2021-21973 known to be exploited?

Yes. CVE-2021-21973 is listed in the CISA Known Exploited Vulnerabilities catalog (added 2022-03-07), indicating it is being actively exploited. 38 public proof-of-concept repositories are indexed.

Vulnerability in Vmware Cloud Foundation

CVE-2021-21973

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 PO…

EPSS: 0.904 (99.6th percentile) — read the EPSS interpretation.

Affected products

N/a Vmware Cloud Foundation — versions 4.x before 4.2, 3.x before 3.10.1.2
N/a Vmware Vcenter Server — versions 7.x before 7.0 U1c, 6.7 before 6.7 U3l, 6.5 before 6.5 U3n

CISA KEV (Known Exploited Vulnerabilities)

This CVE is on the CISA KEV catalog, added on 2022-03-07. CISA KEV inclusion means CISA has confirmed in-the-wild exploitation; US federal agencies are required to remediate within a published due date.

BOD 22-01 due date: 2022-03-21.

Required action: Apply updates per vendor instructions.

Public proof-of-concept exploits

References

www.vmware.com/security/advisories/VMSA-2021-0002.html (x_refsource_CONFIRM)

Frequently asked questions

What is CVE-2021-21973?: CVE-2021-21973 is a vulnerability in Vmware Cloud Foundation. Published 2021-02-24.
Is CVE-2021-21973 known to be exploited?: Yes. CVE-2021-21973 is listed in the CISA Known Exploited Vulnerabilities catalog (added 2022-03-07), indicating it is being actively exploited. 38 public proof-of-concept repositories are indexed.