CVE-2021-22005

CVE Enrichment

CVSS: 9.8 CRITICAL
EPSS: 100.00%
EPSS Percentile: 100.00%
CISA KEV: YES — Known Exploited Vulnerability

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.

Technical Details

CVSS Version: 3.1
CNA / NVD Source: [email protected]
Published: 23-Sep-2021 19:15
Last Modified: 17-Jun-2026 10:36
EPSS Date: 2026-11-12
CWE: CWE-22

CVSS Vector


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

CISA KEV Details

Date Added: 2021-11-03
Remediation Due: 2021-11-17
Known Ransomware Campaign Use: Known
Required Action: Apply updates per vendor instructions.
Notes: https://nvd.nist.gov/vuln/detail/CVE-2021-22005

CNA Products / Version Status

n/a · VMware vCenter Server, VMware Cloud Foundation Source: CNA · [email protected]
Default status: unknown

VMware vCenter Server(7.x before 7.0 U2c and 6.7 before 6.7 U3o) and VMware Cloud Foundation (4.x before 4.3 and 3.x before 3.10.2.2) — affected

Affected Products / Versions

vmware / cloud_foundation Source: NVD CPE · affected
Version / affected range: * · from (inclusive) 3.0 · before (exclusive) 5.0
cpe:2.3:a:vmware:cloud_foundation:*:*:*:*:*:*:*:*
vmware / vcenter_server Source: NVD CPE · affected
Version / affected range: 6.5
cpe:2.3:a:vmware:vcenter_server:6.5:-:*:*:*:*:*:*
vmware / vcenter_server Source: NVD CPE · affected
Version / affected range: 6.7
cpe:2.3:a:vmware:vcenter_server:6.7:-:*:*:*:*:*:*
vmware / vcenter_server Source: NVD CPE · affected
Version / affected range: 7.0
cpe:2.3:a:vmware:vcenter_server:7.0:-:*:*:*:*:*:*

References

Last enrichment sync: 13-Nov-2026 20:46
Sources: NVD · FIRST EPSS · CISA KEV
Latest successful provider update; providers refresh independently.

Reported Context (1)

For example, the Twelve group chained CVE-2021-21972 and CVE-2021-22005 to plant a web shell directly on a vCenter appliance, which loaded a backdoor that then established persistence by injecting a shared object into Kaspersky Details ESXi Ransomware Attack and Defenses After vCenter Compromise

CVE (4)

Malware (10)

Threat Actors (4)

MITRE ATT&CK (10)

Vendors (5)

Products (5)

Tools (2)

Note: Related entities, including threat actors, malware, CVEs, MITRE ATT&CK techniques, vendors, products, tools, countries, and industries, are shown when they appear in the same reporting. Their presence does not necessarily mean they were targeted, compromised, vulnerable, responsible for the activity, or directly involved in the incident.