CVE-2020-3952
KEVVMware vCenter Server Information Disclosure Vulnerability
Description
VMware vCenter Server contains an information disclosure vulnerability in the VMware Directory Service (vmdir) when the Platform Services Controller (PSC) does not correctly implement access controls. Successful exploitation allows an attacker with network access to port 389 to extract sensitive information.
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 3.1 vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:HPublishedApr 10, 2020
Last modifiedJun 17, 2026
Added to KEVNov 3, 2021
Remediation dueMay 3, 2022
References
- packetstormsecurity.com/files/157896/VMware-vCenter-Server-6.7-Authentication-Bypass.htmlExploitThird Party Advisory
- vmware.com/security/advisories/VMSA-2020-0006Broken LinkVendor Advisory
- cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2020-3952US Government Resource
0 recent articles mention this CVE
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Risk assessment · Critical
Actively exploited. Patch immediately.
- Exploitation
- Confirmed in the wild (CISA KEV)
- Federal remediation deadline
- Overdue by 1638 days
- CVSS
- 9.8 CRITICAL
- EPSS (30-day exploit probability)
- 90.4% · top 1% of all CVEs
- Weakness
- CWE-306
- Attack vector
- Network, remotely reachable
- Preconditions
- No privileges and no user interaction
Recommended actions
- 1.Apply updates per vendor instructions.
- 2.Treat as emergency change: patch or isolate internet-facing instances first.
- 3.Review exposure: confirm which instances are reachable from the internet and restrict access until patched.
- 4.Hunt for compromise: review logs for the disclosure window, not just from the patch date.
Assessment is derived automatically from the live signals above; verify against your own asset inventory.