CVE-2021-22005

Name: CVE-2021-22005
Creator: NVD / NIST
Published: 2021-09-23T12:15:07.707+00:00
License: https://creativecommons.org/publicdomain/zero/1.0/

CRITICALCVSS 9.8/10Actively ExploitedEPSS 100.00%

Last modified Jun 17, 2026

CVE-2021-22005 is a critical-severity vulnerability rated 9.8/10 on the CVSS scale. The vCenter Server contains an arbitrary file upload vulnerability in the Analytics service. A malicious actor with network access to port 443 on vCenter Server may exploit this issue to execute code on vCenter Server by uploading a specially crafted file.. CISA has confirmed active exploitation in the wild. EPSS estimates a 100.00% chance of exploitation in the next 30 days.

Description

The vCenter Server contains an arbitrary file upload vulnerability in the Analytics service. A malicious actor with network access to port 443 on vCenter Server may exploit this issue to execute code on vCenter Server by uploading a specially crafted file.

Metrics

CVSS 3.1

9.8/10

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

EPSS Probability

100.00%

100.0th percentile

Probability of exploitation in the next 30 days. Learn more

Exploitation Status

This vulnerability is listed in CISA’s Known Exploited Vulnerabilities catalog, confirming active exploitation in the wild. Federal agencies must remediate by Nov 17, 2021.

Weakness Enumeration

Affected Software

Vendor	Product	Versions
Vmware	Cloud Foundation	>= 3.0, < 5.0
Vmware	Vcenter Server	6.5
Vmware	Vcenter Server	6.7
Vmware	Vcenter Server	7.0

References

http://packetstormsecurity.com/files/164439/VMware-vCenter-Server-Analytics-CEIP-Service-File-Upload.htmlExploit, Third Party Advisory, VDB Entry
https://www.vmware.com/security/advisories/VMSA-2021-0020.htmlPatch, Vendor Advisory
http://packetstormsecurity.com/files/164439/VMware-vCenter-Server-Analytics-CEIP-Service-File-Upload.htmlExploit, Third Party Advisory, VDB Entry
https://www.vmware.com/security/advisories/VMSA-2021-0020.htmlPatch, Vendor Advisory
https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2021-22005US Government Resource

Timeline

Published: Sep 23, 2021
Last Modified: Jun 17, 2026
Status: Analyzed

Frequently Asked Questions

What is CVE-2021-22005?

How severe is CVE-2021-22005?

CVE-2021-22005 has a CVSS score of 9.8/10 (CRITICAL severity). The EPSS model estimates a 100.00% probability of exploitation in the next 30 days. This vulnerability is listed in CISA's Known Exploited Vulnerabilities catalog.

How do I fix CVE-2021-22005?

Check the vendor references and advisories linked above for patched versions and mitigation guidance. You can also run a Strix scan to test if your systems are affected.

Are you affected by CVE-2021-22005?

Run a free Strix scan to check your systems for this vulnerability.

Scan your code now

Source: NVD / NIST