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CVE-2021-22009

24
FAUCET Score

CVE-2021-22009 is a denial-of-service vulnerability affecting VMware vCenter Server and Cloud Foundation. An unauthenticated attacker with network access to port 443 can exploit this flaw in the VAPI service, leading to excessive memory consumption and a denial of service. Rated 7.5 HIGH on CVSS, it has low attack complexity and requires no user interaction. There is currently no evidence of active exploitation, public exploit code, or significant community discussion.

Impacted Technologies

VendorProductVersion(s)CPE
>= 3.0, < 5.0CPE matchmatch criteria
cpe:2.3:a:vmware:cloud_foundation:*:*:*:*:*:*:*:*
6.7CPE matchmatch criteria
cpe:2.3:a:vmware:vcenter_server:6.7:-:*:*:*:*:*:*
7.0CPE matchmatch criteria
cpe:2.3:a:vmware:vcenter_server:7.0:-:*:*:*:*:*:*

CVSS Data

CVSS version used by this source: 3.1

7.5HIGH

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

Attack Vector
NETWORK
Attack Complexity
LOW
Privileges Required
NONE
User Interaction
NONE
Scope
UNCHANGED
Confidentiality Impact
NONE
Integrity Impact
NONE
Availability Impact
HIGH
Exploitability Score
3.9
Impact Score
3.6
CvssVersion
3.1

Exploit Intelligence

EPSS Score
1.40%
Probability of exploitation in next 30 days
EPSS Percentile
69.8%
Percentile rank of EPSS score among Peer Group
As of 2026-07-28
Model: v2026.06.15
This CVE's current EPSS score of 0.0140 is in the 51st percentile among its peer group of 51,553 CVEs.

Social Chatter

The average CVE in this peer group has 0.0 Twitter, 0.0 Reddit, 0.1 Bluesky, 0.1 Mastodon, and 0.4 GitHub mentions.

Media Mentions

No media coverage found for this CVE.

The average CVE in this peer group has 0.1 InfoSec Media, 0.0 Vendor Blog, and 0.0 Security Researcher mentions.

Remediation

Patch Available

Vendor Patches (1)

vmwarepatch availablevia nvd_reference
View patch

References

vmware.com / security/advisories/VMSA-2021-0020.html
PatchVendor Advisory