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Fencer Intel
critical 9.8

CVE-2020-3952 kev in the critical feed json

Under certain conditions, vmdir that ships with VMware vCenter Server, as part of an embedded or external Platform Services Controller (PSC…

published 6y ago modified 4mo ago also EUVD-2020-25217

cvss
9.8
version 3.1, CNA
cisa kev
Exploited
added 2021-11-03
epss
90.4%
EPSS 90.4% chance of exploitation in 30 days, percentile 99.8%
public exploits
3
Metasploit and Exploit-DB, plus a Nuclei check

Summary

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.

Patch / fix

cisa required action Apply updates per vendor instructions.

Is CVE-2020-3952 in your stack? Fencer shows which of your repositories are affected as soon as an advisory lands, and opens the fix as a pull request.

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Timeline

  1. First public exploit (Metasploit auxiliary/admin/ldap/vmware_vcenter_vmdir_auth_bypass)
  2. Published
  3. Added to CISA KEV
  4. CISA patch deadline
  5. CISA SSVC: exploitation active

Known exploited

Added
5y ago
Patch by
2022-05-03 (4y ago)
Ransomware
Not known
Required action
Apply updates per vendor instructions.
Vendor, product
VMware, vCenter Server
CISA name
VMware vCenter Server Information Disclosure Vulnerability

CISA SSVC

Exploitation
Active, exploited in the wild
Automatable
yes
Technical impact
total
Assessed
last yr.

Exploit prediction

90.38% chance of exploitation in the next 30 days, higher than 99.8% of all scored CVEs (FIRST EPSS, 2026-11-09).

Exploits and checks

CVSS scores

assigned by version score vector
CISA ADP 3.1 9.8 CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
NVD 3.1 9.8 CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
CNA 3.1 9.8 CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
NVD 2.0 6.8 AV:N/AC:M/Au:N/C:P/I:P/A:P

Affected products

  • n/a VMware vCenter Server

Classification

Weakness
  • CWE-306 Missing Authentication for Critical Functionality
Technology feeds

References

Sources

Fencer Intel keeps one entry per vulnerability: the CVE id wins, then GHSA, and records that alias each other are merged, except that two CVEs always keep separate entries. The same data is available as JSON.