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CVE-2020-3952

98
FAUCET Score

CVE-2020-3952 is a critical authentication bypass vulnerability in the vmdir component of VMware vCenter Server, affecting both embedded and external Platform Services Controllers. With a CVSS score of 9.8, this flaw allows unauthenticated attackers to gain full control over affected systems due to improper access controls. It is actively exploited in the wild, with public exploit code available in Metasploit and ExploitDB, and has garnered significant community and media attention.

Impacted Technologies

VendorProductVersion(s)CPE
6.7CPE matchmatch criteria
cpe:2.3:a:vmware:vcenter_server:6.7:-:*:*:*:*:*:*

CVSS Data

CVSS version used by this source: 3.1

9.8CRITICAL

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

Attack Vector
NETWORK
Attack Complexity
LOW
Privileges Required
NONE
User Interaction
NONE
Scope
UNCHANGED
Confidentiality Impact
HIGH
Integrity Impact
HIGH
Availability Impact
HIGH
Exploitability Score
3.9
Impact Score
5.9
CvssVersion
3.1

Exploit Intelligence

EPSS Score
90.38%
Probability of exploitation in next 30 days
EPSS Percentile
99.8%
Percentile rank of EPSS score among Peer Group
As of 2026-07-26
Model: v2026.06.15
Added to KEV · Nov 3, 2021
Metasploit: VMware vCenter Server vmdir Authentication Bypass · Apr 9, 2020
Nuclei: CVE-2020-3952 · Oct 22, 2025
ExploitDB: EDB-48535 · Jun 1, 2020
This CVE's current EPSS score of 0.9038 is in the 99th percentile among its peer group of 36,835 CVEs.

Social Chatter

The average CVE in this peer group has 0.0 Twitter, 0.1 Reddit, 0.3 Bluesky, 0.3 Mastodon, and 2.4 GitHub mentions.

Media Mentions

The average CVE in this peer group has 0.3 InfoSec Media, 0.0 Vendor Blog, and 0.0 Security Researcher mentions.

Remediation

Vendor Patches (1)

vmwarevendor investigatingvia nvd_reference
View patch

References

cisa.gov / known-exploited-vulnerabilities-catalog
US Government Resource
packetstormsecurity.com / files/157896/VMware-vCenter-Server-6.7-Authentication-Bypass.html
ExploitThird Party AdvisoryVDB Entry
vmware.com / security/advisories/VMSA-2020-0006
Broken LinkVendor Advisory