CVE-2021-21980

mediumpriority · track · 42EPSS 0.047 · 92 %ileexploit · PoCEURUUS

grimoire priorityP1 · Urgent

Exploitable?

Public exploit

6 exploits · PoC

Likely / severe?

4.67% (92nd) EPSS

CVSS 5 · medium

Is it mine?

7 products

Check your exposure

Who says so?

4 sources

cnnvd · enisa_euvd · fstec_bdu · nvd

EPSS · scored 2026-10-24

The vSphere Web Client (FLEX/Flash) contains an unauthorized arbitrary file read vulnerability. A malicious actor with network access to port 443 on vCenter Server may exploit this issue to gain access to sensitive information.

cvss

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

7.5

010

base score 0–10 · higher = more severe · hover a vector to decode⚠ sources disagree · medium–high · 5–7.5

v2.05mediumAV:N/AC:L/Au:N/C:P/I:N/A:Nprimary · NVD / NIST USexploitability 10 · impact 2.9

v3.17.5highCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:Nprimary · NVD / NIST USexploitability 3.9 · impact 3.6

v3.17.5highAV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:Nsecondary · FSTEC (BDU) RU

v3.17.5highCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N/E:Hsecondary · CVSS-BT (t0sche)

weaknesses

The CWE weakness classes this flaw belongs to.

CWE-22US

exploits (6)

Public proof-of-concept and weaponised exploit code.

Osyanina/westone-CVE-2021-21980-scannerA vulnerability scanner that detects CVE-2021-21980 vulnerabilities.PoC · poc_in_github
Osyanina/westone-CVE-2022-1388-scannerA vulnerability scanner that detects CVE-2021-21980 vulnerabilities.PoC · poc_in_github
gui2000guix-ui/cve-2021-21980-mock-serverCVE-2021-21980PoC · poc_in_github
gui2000guix-ui/cve-2021-21980-nuclei-pocNuclei Template and Mock Server for CVE-2021-21980 (vSphere Path Traversal)PoC · poc_in_github
pkxk5pr6m2-web/cve-2021-21980-nuclei-pocNuclei Template and Mock Server for CVE-2021-21980 (vSphere Path Traversal)PoC · poc_in_github
pratikjojode/vcenter-cve-2021-21980-labRealistic vulnerable lab for CVE-2021-21980 (VMware vSphere Path Traversal) - Actual file exploitation, not a mock serverPoC · poc_in_github

affected products (7)

Products and version ranges known to be affected.

n/a VMware vCenter Server and VMware Cloud Foundation≤ VMware vCenter Server (6.7 before 6.7 U3p and 6.5 before 6.5 U3r) and VMware Cloud Foundation 3.xenisa_euvdEU
Broadcom Inc. VMware Cloud Foundation3.0 → 4.0fstec_bduRU
Broadcom Inc. VMware vCenter Server6.5 → 6.5 U3rfstec_bduRU
Broadcom Inc. VMware vCenter Server6.7 → 6.7 U3pfstec_bduRU
vmware cloud foundation= 3.0nvdUScpe: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:*:*:*:*:*:*:*:*

also known as (5)

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 2021-11-24modified 2026-06-17

references (8)

External citations — patches, advisories, analysis.

scry

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