CVE-2020-3952 | BDVDB-2026-133813 Detail

VMware vCenter Server

Description#

Under certain conditions, vmdir that ships with VMware vCenter Server, as part of an embedded or external Platform Services Controller (PSC), does not correctly implement access controls.

Impact#

Per CVSS v3.1: confidentiality impact high, integrity impact high, availability impact high. Attack vector: network.

Weaknesses#

CWE-306 Missing Authentication for Critical Function

References#

Exploit#

No public exploit known

History#

Version 12020-04-10Record published in the CVE List.
Version 22025-10-21Most recent update recorded in the CVE List.

Published

Published: 2020-04-10
Last modified: 2025-10-21

Vendor information

Vendor: Not stated
Product: VMware vCenter Server

Score

9.8 Critical

EPSS

90.3%, Very High

Estimated chance of exploitation in the next 30 days. EPSS percentile: 99.8.

KEV

Yes

Listed in the CISA Known Exploited Vulnerabilities catalog.

Impact

Authentication Issues

Action

Apply updates per vendor instructions.

Affected Systems

Vulnerable
vCenter Server 6.7 (embedded or external PSC) prior to 6.7u3f is affected by CVE-2020-3952 if it was upgraded from a previous release line such as 6.0 or 6.5. Clean installations of vCenter Server 6.7 (embedded or external PSC) are not affected.
Fixed
Not stated

Scoring System

CVSS v4.0

Not available

CVSS v3.1

9.8 Critical

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

Metric breakdown
Attack Vector	Network
Attack Complexity	Low
Privileges Required	None
User Interaction	None
Scope	Unchanged
Confidentiality	High
Integrity	High
Availability	High

CVSS v3.0

Not available

CVSS v2

Not available

Source: CVE List v5 (record); CISA KEV (kev, action); FIRST EPSS (epss).