vCenter Server contains an unauthenticated API endpoint vulnerability in vCenter Server Content Library.

published 2021-09-23 5y ago modified 2026-06-17 4mo ago also EUVD-2021-9180

cvss: 5.3; version 3.1, NVD
cisa kev: Not listed; not in CISA's catalog
epss: 1.1%; EPSS 1.1% chance of exploitation in 30 days, percentile 65%
public exploits: 0; none known

vCenter Server contains an unauthenticated API endpoint vulnerability in vCenter Server Content Library. A malicious actor with network access to port 443 on vCenter Server may exploit this issue to perform unauthenticated VM network setting manipulation.

Patch / fix

fixed in 1 links 1

vmware cloud_foundation 5.0

vmware.com/security/advisories/VMSA-2021-0020.html advisory

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Exploit prediction

1.09% chance of exploitation in the next 30 days, higher than 65% of all scored CVEs (FIRST EPSS, 2026-11-09).

CVSS scores

assigned by	version	score	vector
NVD	3.1	5.3	CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:N
NVD	2.0	5.0	AV:N/AC:L/Au:N/C:N/I:P/A:N

Affected products

n/a VMware vCenter Server, VMware Cloud Foundation

Classification

Technology feeds

VMware rss critical rss

References

vmware.com /security/advisories/VMSA-2021-0020.html
patch, vendor-advisory

Sources

CVE List CVE-2021-22011
NVD CVE-2021-22011

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