CVE-2021-21972

highpriority · act · 90OT risk · criticalKEV · exploitedEPSS 0.999 · 100 %ileexploit · PoCEURUUS

grimoire priorityP0 · Act now

Exploitable?

Yes · in the wild

CISA KEV · 30 exploits · PoC

Likely / severe?

99.9% (100th) EPSS

CVSS 10 · high

Is it mine?

15 products

Check your exposure

Who says so?

4 sources

cnnvd · enisa_euvd · fstec_bdu · nvd

added 2021-11-03remediate by 2021-11-17

required action Apply updates per vendor instructions.

EPSS · scored 2026-10-26

VMware vCenter Server Remote Code Execution Vulnerability

The vSphere Client (HTML5) contains a remote code execution vulnerability in a vCenter Server plugin. A malicious actor with network access to port 443 may exploit this issue to execute commands with unrestricted privileges on the underlying operating system that hosts vCenter Server. This affects VMware vCenter Server (7.x before 7.0 U1c, 6.7 before 6.7 U3l and 6.5 before 6.5 U3n) and VMware Cloud Foundation (4.x before 4.2 and 3.x before 3.10.1.2).

cvss

Technical severity, 0–10. One row per scoring source.

10.0

010

base score 0–10 · higher = more severe · hover a vector to decode⚠ sources disagree · high–critical · 9.8–10

v2.010highAV:N/AC:L/Au:N/C:C/I:C/A:Cprimary · NVD / NIST USexploitability 10 · impact 10

v3.19.8criticalCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:Hprimary · NVD / NIST USexploitability 3.9 · impact 5.9

v3.19.8criticalAV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:Hsecondary · FSTEC (BDU) RU

v3.19.8criticalCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:Hsecondary · ENISA EU

v3.19.8criticalCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:Hsecondaryexploitability 3.9 · impact 5.9

v3.19.8criticalCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H/E:Hsecondary · CVSS-BT (t0sche)

ssvc

A stakeholder decision — act, attend, or track — from exploitation and impact.

Exploitation: active · Automatable: yes · Technical Impact: totalcoordinatorcisa_ssvcUS

weaknesses

The CWE weakness classes this flaw belongs to.

CWE-22USprimaryCWE-20US

ATT&CK techniques

ATT&CK techniques this enables or maps to.

exploits (30)

Public proof-of-concept and weaponised exploit code.

EDB-49602VMware vCenter Server 7.0 - Unauthenticated File UploadPoC · exploit_db
EDB-50056VMware vCenter Server 7.0 - Remote Code Execution (RCE) (Unauthenticated)PoC · exploit_db
exploit/multi/http/vmware_vcenter_uploadova_rceVMware vCenter Server Unauthenticated OVA File Upload RCEPoC · metasploit
B1anda0/CVE-2021-21972VMware vCenter Server远程代码执行漏洞 (CVE-2021-21972)批量检测脚本PoC · poc_in_github
ByZain/CVE-2021-21972CVE-2021-21972 related vulnerability codePoC · poc_in_github
GuayoyoCyber/CVE-2021-21972Nmap script to check vulnerability CVE-2021-21972PoC · poc_in_github

affected products (15)

Products and version ranges known to be affected.

n/a VMware Cloud Foundation≤ 4.x before 4.2enisa_euvdEU
n/a VMware Cloud Foundation≤ 3.x before 3.10.1.2enisa_euvdEU
n/a VMware vCenter Server≤ 7.x before 7.0 U1cenisa_euvdEU
n/a VMware vCenter Server≤ 6.5 before 6.5 U3nenisa_euvdEU
n/a VMware vCenter Server≤ 6.7 before 6.7 U3lenisa_euvdEU
Broadcom Inc. VMware Cloud Foundation3.0 → 3.10.1.2fstec_bduRU
Broadcom Inc. VMware Cloud Foundation4.0 → 4.2fstec_bduRU
Broadcom Inc. VMware vCenter Server6.5 → 6.5 U3nfstec_bduRU
Broadcom Inc. VMware vCenter Server6.7 → 6.7 U3lfstec_bduRU
Broadcom Inc. VMware vCenter Server7.0 → 7.0 U1cfstec_bduRU
vmware cloud foundation3.0 → 3.10.1.2nvdUScpe:2.3:a:vmware:cloud_foundation:*:*:*:*:*:*:*:*
vmware cloud foundation4.0 → 4.2nvdUScpe:2.3:a:vmware:cloud_foundation:*:*:*:*:*:*:*:*
vmware vcenter server= 6.5nvdUScpe:2.3:a:vmware:vcenter_server:*:*:*:*:*:*:*:*
vmware vcenter server= 6.7nvdUScpe:2.3:a:vmware:vcenter_server:*:*:*:*:*:*:*:*
vmware vcenter server= 7.0nvdUScpe:2.3:a:vmware:vcenter_server:*:*:*:*:*:*:*:*

also known as (4)

Other names and identifiers for this entity.

sources

Which sources assert this record, and when.

cnnvd enisa_euvd fstec_bdu nvd NVD CVE.org MITRE

published 2021-02-24modified 2026-08-14

related (12,500)

Related entries.

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+12495 more

references (22)

External citations — patches, advisories, analysis.

scry

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