CVE-2021-21992

high-risk
Published 2021-09-22

The vCenter Server contains a denial-of-service vulnerability due to improper XML entity parsing. A malicious actor with non-administrative user access to the vCenter Server vSphere Client (HTML5) or vCenter Server vSphere Web Client (FLEX/Flash) may exploit this issue to create a denial-of-service condition on the vCenter Server host.

Do I need to act?

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0.93% chance of exploitation
EPSS score — low exploit probability
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Not on CISA KEV list
No confirmed active exploitation reported to CISA
?
Patch status unknown
Check vendor advisories for fix availability and mitigation guidance
6
CVSS 6.5/10 Medium
NETWORK / LOW complexity

Affected Products (20)

Affected Vendors

Vmware

References (2)

Vendor Advisory https://www.vmware.com/security/advisories/VMSA-2021-0020.html
Vendor Advisory https://www.vmware.com/security/advisories/VMSA-2021-0020.html
53
/ 100
high-risk
Severity 24/34 · High
Exploitability 3/34 · Minimal
Exposure 26/34 · High