CVE-2020-3976

mediumpriority · track · 22EPSS 0.021 · 82 %ileEURUUS

grimoire priorityP3 · Track

Exploitable?

—

no known exploitation

Likely / severe?

2.12% (82nd) EPSS

CVSS 5 · medium

Is it mine?

17 products

Check your exposure

Who says so?

4 sources

cnnvd · enisa_euvd · fstec_bdu · nvd

EPSS · scored 2026-10-23

VMware ESXi and vCenter Server contain a partial denial of service vulnerability in their respective authentication services. VMware has evaluated the severity of this issue to be in the Moderate severity range with a maximum CVSSv3 base score of 5.3.

cvss

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

5.3

010

base score 0–10 · higher = more severe · hover a vector to decode

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

v3.15.3mediumCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:Lprimary · NVD / NIST USexploitability 3.9 · impact 1.4

v3.15.3mediumAV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:Lsecondary · FSTEC (BDU) RU

v3.14.9mediumCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L/E:Usecondary · CVSS-BT (t0sche)

weaknesses

The CWE weakness classes this flaw belongs to.

CWE-400USprimaryCWE-287US

affected products (17)

Products and version ranges known to be affected.

n/a ESXi, vCenter Server, and Cloud Foundation≤ ESXi 7.0, 6.7, 6.5, vCenter Server 7.0, 6.7, 6.5, and Cloud Foundation 4.x.x, and 3.x.x release lines.enisa_euvdEU
Broadcom Inc. VMware Cloud Foundation≤ 3.10fstec_bduRU
Broadcom Inc. VMware Cloud Foundation≤ 4.0.1fstec_bduRU
Broadcom Inc. VMware ESXi≤ 6.5fstec_bduRU
Broadcom Inc. VMware ESXi≤ 7.0.0fstec_bduRU
Broadcom Inc. VMware ESXi≤ 6.7fstec_bduRU
Broadcom Inc. VMware vCenter Server≤ 7.0.0bfstec_bduRU
Broadcom Inc. VMware vCenter Server≤ 6.7u3jfstec_bduRU
Broadcom Inc. VMware vCenter Server≤ 6.5u3kfstec_bduRU
vmware cloud foundation3.0 → 3.10nvdUScpe:2.3:a:vmware:cloud_foundation:*:*:*:*:*:*:*:*
vmware cloud foundation4.0 → 4.0.1nvdUScpe:2.3:a:vmware:cloud_foundation:*:*:*:*:*:*:*:*
vmware esxi= 6.5nvdUScpe:2.3:o:vmware:esxi:*:*:*:*:*:*:*:*
vmware esxi= 6.7nvdUScpe:2.3:o:vmware:esxi:*:*:*:*:*:*:*:*
vmware esxi= 7.0nvdUScpe:2.3:o:vmware:esxi:*:*:*:*:*:*:*:*
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 2020-08-21modified 2026-06-17

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+9578 more

references (7)

External citations — patches, advisories, analysis.

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