CVE-2020-3952

CRITICALNVD 9.89.8—Trending — 4 sources updated this weekExploited in the wild

9.8

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.

CVSS v3: 9.8
EG Score: 9.8(high)
EPSS: 100.0%
KEV: ⚠ Exploited

Published

April 10, 2020

Last Modified

October 30, 2025

Advisory Details (1)

Auto-updated Jun 1, 2026

⚠️ Active exploitation confirmed. Patch available. Sources: cisa.

cisa Patch Available🔴 Active Exploitation

Known Exploited Vulnerabilities Catalog | CISA

Known Exploited Vulnerabilities Catalog | CISA. Listed in CISA Known Exploited Vulnerabilities catalog.

https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2020-3952

Weakness Classification(3)

MITRE Common Weakness Enumeration — the root-cause categories this CVE belongs to.

Data Freshness Timeline

(refreshed 20× in last 7d / 20× in last 30d)

Every time one of our enrichment pipelines (NVD, MITRE cvelistV5, EPSS, CISA KEV, GHSA, OSV, vendor advisories) ran against this CVE. Most recent first.

2026-06-04 03:30 UTCEG score recompute
2026-06-04 03:30 UTCGHSA enrichment
2026-06-03 23:19 UTCEG score recompute
2026-06-03 23:19 UTCGHSA enrichment
2026-06-03 19:09 UTCkev_newly_listed
2026-06-03 19:08 UTCEG score recompute
2026-06-03 19:08 UTCGHSA enrichment
2026-06-03 14:57 UTCEG score recompute
2026-06-03 14:57 UTCGHSA enrichment
2026-06-03 10:46 UTCEG score recompute
2026-06-03 10:46 UTCGHSA enrichment
2026-06-03 06:35 UTCEG score recompute
2026-06-03 06:35 UTCGHSA enrichment
2026-06-03 02:24 UTCEG score recompute
2026-06-03 02:24 UTCGHSA enrichment
2026-06-02 22:13 UTCEG score recompute
2026-06-02 22:13 UTCGHSA enrichment
2026-06-02 20:11 UTCepss_batch
2026-06-02 20:11 UTCepss_batch
2026-06-02 18:32 UTCkev_newly_listed

Publicly available exploits

(8 references)

Working exploit code is in the public domain (2 Metasploit modules) (4 GitHub PoCs) (1 Exploit-DB entry). Defenders should treat patch urgency accordingly — public PoCs typically lead to mass-exploitation within 24-72 hours.

Exploit-DBEDB-48535
First seen Jun 1, 2020
VMware vCenter Server 6.7 - Authentication Bypass
Open source ↗
GitHub PoCFa1c0n35/vmware_vcenter_cve_2020_3952
First seen Apr 19, 2020
Exploit for CVE-2020-3952 in vCenter 6.7 https://www.guardicore.com/2020/04/pwning-vmware-vcenter-cve-2020-3952/
Open source ↗
GitHub PoCgelim/CVE-2020-3952
First seen Apr 17, 2020
VMWare vmdir missing access control exploit checker
Open source ↗
GitHub PoCguardicore/vmware_vcenter_cve_2020_3952
First seen Apr 16, 2020
Exploit for CVE-2020-3952 in vCenter 6.7
Open source ↗
GitHub PoCchronoloper/CVE-2020-3952
First seen Apr 15, 2020
Vuln Check
Open source ↗
Metasploitauxiliary/gather/vmware_vcenter_vmdir_ldap✓ verified
First seen Apr 9, 2020
VMware vCenter Server vmdir Information Disclosure
Open source ↗
Metasploitauxiliary/admin/ldap/vmware_vcenter_vmdir_auth_bypass✓ verified
First seen Apr 9, 2020
VMware vCenter Server vmdir Authentication Bypass
Open source ↗
Nucleihttp/cves/2020/CVE-2020-3952.yaml
First seen Jan 1, 2020
VMware vCenter Server LDAP Broken Access Control
Open source ↗

Frequently asked(6)

What is CVE-2020-3952?

CVE-2020-3952 is a critical vulnerability published on April 10, 2020. 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.

When was CVE-2020-3952 disclosed?

CVE-2020-3952 was first published in the National Vulnerability Database on April 10, 2020, with the most recent update on October 30, 2025. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.

Is CVE-2020-3952 actively exploited?

Yes. CISA added CVE-2020-3952 to the Known Exploited Vulnerabilities catalog on November 3, 2021, affecting VMware vCenter Server. KEV listing indicates confirmed exploitation in the wild; this CVE warrants immediate patching attention.

What is the CVSS score of CVE-2020-3952?

CVE-2020-3952 has a CVSS v3 base score of 9.8 (NVD).

Which products are affected by CVE-2020-3952?

CVE-2020-3952 affects VMware vCenter Server. The full affected-products list, including version ranges and fixed versions, is shown in the Affected Packages section of this page.

How do I remediate CVE-2020-3952?

Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2020-3952, EchelonGraph cross-links them in the Vendor Advisories panel below — those typically contain the canonical remediation steps, fixed version numbers, and any vendor-specific mitigations.

Dependency Blast Radius

See which npm, PyPI, Go, and Maven packages are affected by CVE-2020-3952

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Is Your Infrastructure Affected by CVE-2020-3952?

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CVE-2020-3952

📅 Published

🔄 Last Modified

📋 Advisory Details (1)