{"schemaVersion":3,"id":"CVE-2020-3952","aliases":[],"status":"published","duplicateOf":null,"title":"VMware vCenter Server Information Disclosure Vulnerability","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.","dates":{"published":"2020-04-10T13:55:36.000Z","modified":"2025-10-21T23:35:46.943Z","reserved":null,"kevAdded":["2021-11-03T00:00:00.000Z"],"kevDue":["2022-05-03T00:00:00.000Z"]},"cvss":{"headline":{"score":9.8,"severity":"critical","version":"3.1","versionLabel":"v3.1","source":"CVE.org","vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H","computed":false,"selection":"backend-summary"},"metrics":[{"version":"3.1","versionLabel":"v3.1","source":"CVE.org","score":9.8,"severity":"critical","vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H","exploitability":null,"impact":null,"computed":false},{"version":"3.1","versionLabel":"v3.1","source":"NVD","score":9.8,"severity":"critical","vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H","exploitability":null,"impact":null,"computed":false},{"version":"2.0","versionLabel":"v2.0","source":"NVD","score":6.8,"severity":"medium","vector":"AV:N/AC:M/Au:N/C:P/I:P/A:P","exploitability":null,"impact":null,"computed":false}]},"epss":{"probability":0.90384,"percentile":0.99801,"severity":"critical","asOf":"2026-10-20T00:00:00.000Z","change":{"pp":0,"baselineDate":"2026-09-20T00:00:00.000Z","baselineScore":0.90384},"history":[{"date":"2026-09-14T00:00:00.000Z","score":0.90384,"percentile":null},{"date":"2026-09-15T00:00:00.000Z","score":0.90384,"percentile":null},{"date":"2026-09-16T00:00:00.000Z","score":0.90384,"percentile":null},{"date":"2026-09-17T00:00:00.000Z","score":0.90384,"percentile":null},{"date":"2026-09-18T00:00:00.000Z","score":0.90384,"percentile":null},{"date":"2026-09-19T00:00:00.000Z","score":0.90384,"percentile":null},{"date":"2026-09-20T00:00:00.000Z","score":0.90384,"percentile":null},{"date":"2026-09-21T00:00:00.000Z","score":0.90384,"percentile":null},{"date":"2026-09-22T00:00:00.000Z","score":0.90384,"percentile":null},{"date":"2026-09-23T00:00:00.000Z","score":0.90384,"percentile":null},{"date":"2026-09-24T00:00:00.000Z","score":0.90384,"percentile":null},{"date":"2026-09-25T00:00:00.000Z","score":0.90384,"percentile":null},{"date":"2026-09-26T00:00:00.000Z","score":0.90384,"percentile":null},{"date":"2026-09-27T00:00:00.000Z","score":0.90384,"percentile":null},{"date":"2026-09-28T00:00:00.000Z","score":0.90384,"percentile":null},{"date":"2026-09-29T00:00:00.000Z","score":0.90384,"percentile":null},{"date":"2026-09-30T00:00:00.000Z","score":0.90384,"percentile":null},{"date":"2026-10-01T00:00:00.000Z","score":0.90384,"percentile":null},{"date":"2026-10-02T00:00:00.000Z","score":0.90384,"percentile":null},{"date":"2026-10-03T00:00:00.000Z","score":0.90384,"percentile":null},{"date":"2026-10-04T00:00:00.000Z","score":0.90384,"percentile":null},{"date":"2026-10-05T00:00:00.000Z","score":0.90384,"percentile":null},{"date":"2026-10-06T00:00:00.000Z","score":0.90384,"percentile":null},{"date":"2026-10-07T00:00:00.000Z","score":0.90384,"percentile":null},{"date":"2026-10-08T00:00:00.000Z","score":0.90384,"percentile":null},{"date":"2026-10-09T00:00:00.000Z","score":0.90384,"percentile":null},{"date":"2026-10-10T00:00:00.000Z","score":0.90384,"percentile":null},{"date":"2026-10-11T00:00:00.000Z","score":0.90384,"percentile":null},{"date":"2026-10-12T00:00:00.000Z","score":0.90384,"percentile":null},{"date":"2026-10-13T00:00:00.000Z","score":0.90384,"percentile":null},{"date":"2026-10-14T00:00:00.000Z","score":0.90384,"percentile":null},{"date":"2026-10-15T00:00:00.000Z","score":0.90384,"percentile":null},{"date":"2026-10-16T00:00:00.000Z","score":0.90384,"percentile":null},{"date":"2026-10-17T00:00:00.000Z","score":0.90384,"percentile":null},{"date":"2026-10-18T00:00:00.000Z","score":0.90384,"percentile":null},{"date":"2026-10-19T00:00:00.000Z","score":0.90384,"percentile":null},{"date":"2026-10-20T00:00:00.000Z","score":0.90384,"percentile":0.99801}],"last30":[{"date":"2026-09-20T00:00:00.000Z","score":0.90384,"percentile":null},{"date":"2026-09-21T00:00:00.000Z","score":0.90384,"percentile":null},{"date":"2026-09-22T00:00:00.000Z","score":0.90384,"percentile":null},{"date":"2026-09-23T00:00:00.000Z","score":0.90384,"percentile":null},{"date":"2026-09-24T00:00:00.000Z","score":0.90384,"percentile":null},{"date":"2026-09-25T00:00:00.000Z","score":0.90384,"percentile":null},{"date":"2026-09-26T00:00:00.000Z","score":0.90384,"percentile":null},{"date":"2026-09-27T00:00:00.000Z","score":0.90384,"percentile":null},{"date":"2026-09-28T00:00:00.000Z","score":0.90384,"percentile":null},{"date":"2026-09-29T00:00:00.000Z","score":0.90384,"percentile":null},{"date":"2026-09-30T00:00:00.000Z","score":0.90384,"percentile":null},{"date":"2026-10-01T00:00:00.000Z","score":0.90384,"percentile":null},{"date":"2026-10-02T00:00:00.000Z","score":0.90384,"percentile":null},{"date":"2026-10-03T00:00:00.000Z","score":0.90384,"percentile":null},{"date":"2026-10-04T00:00:00.000Z","score":0.90384,"percentile":null},{"date":"2026-10-05T00:00:00.000Z","score":0.90384,"percentile":null},{"date":"2026-10-06T00:00:00.000Z","score":0.90384,"percentile":null},{"date":"2026-10-07T00:00:00.000Z","score":0.90384,"percentile":null},{"date":"2026-10-08T00:00:00.000Z","score":0.90384,"percentile":null},{"date":"2026-10-09T00:00:00.000Z","score":0.90384,"percentile":null},{"date":"2026-10-10T00:00:00.000Z","score":0.90384,"percentile":null},{"date":"2026-10-11T00:00:00.000Z","score":0.90384,"percentile":null},{"date":"2026-10-12T00:00:00.000Z","score":0.90384,"percentile":null},{"date":"2026-10-13T00:00:00.000Z","score":0.90384,"percentile":null},{"date":"2026-10-14T00:00:00.000Z","score":0.90384,"percentile":null},{"date":"2026-10-15T00:00:00.000Z","score":0.90384,"percentile":null},{"date":"2026-10-16T00:00:00.000Z","score":0.90384,"percentile":null},{"date":"2026-10-17T00:00:00.000Z","score":0.90384,"percentile":null},{"date":"2026-10-18T00:00:00.000Z","score":0.90384,"percentile":null},{"date":"2026-10-19T00:00:00.000Z","score":0.90384,"percentile":null},{"date":"2026-10-20T00:00:00.000Z","score":0.90384,"percentile":0.99801}]},"kev":{"state":"listed","entries":[{"source":"cisa","sourceLabel":"CISA","dateAdded":"2021-11-03T00:00:00.000Z","dueDate":"2022-05-03T00:00:00.000Z","requiredAction":"Apply updates per vendor instructions.","name":"VMware 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.","notes":[{"type":"url","href":"https://nvd.nist.gov/vuln/detail/CVE-2020-3952","label":"nvd.nist.gov/vuln/detail/CVE-2020-3952"}],"vendor":"VMware","product":"vCenter Server","ransomware":false,"ransomwareUse":"Unknown","exploitationType":null}],"listedCount":1,"totalCatalogs":3,"catalogs":[{"source":"cisa","label":"CISA","listed":true,"entry":{"source":"cisa","sourceLabel":"CISA","dateAdded":"2021-11-03T00:00:00.000Z","dueDate":"2022-05-03T00:00:00.000Z","requiredAction":"Apply updates per vendor instructions.","name":"VMware 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.","notes":[{"type":"url","href":"https://nvd.nist.gov/vuln/detail/CVE-2020-3952","label":"nvd.nist.gov/vuln/detail/CVE-2020-3952"}],"vendor":"VMware","product":"vCenter Server","ransomware":false,"ransomwareUse":"Unknown","exploitationType":null}},{"source":"enisa","label":"ENISA","listed":false,"entry":null},{"source":"circl","label":"CIRCL","listed":false,"entry":null}]},"ransomware":{"state":"none-recorded","sources":[]},"exploits":[{"id":"REF_72F10058B40F7623","name":"Exploit Reference (packetstormsecurity.com)","source":"reference","url":"http://packetstormsecurity.com/files/157896/VMware-vCenter-Server-6.7-Authentication-Bypass.html","maturity":"unknown","reliabilityScore":0.2,"verified":false,"type":null,"platforms":[],"requiresAuth":null,"exploitdb":null,"metasploit":null},{"id":"48535","name":"VMware vCenter Server 6.7 - Authentication Bypass","source":"exploit-database","url":"https://www.exploit-db.com/exploits/48535","maturity":"poc","reliabilityScore":0.5,"verified":false,"type":null,"platforms":["multiple"],"requiresAuth":null,"exploitdb":{"verified":false,"type":"webapps","platform":"multiple","file":"exploits/multiple/webapps/48535.txt","codes":["CVE-2020-3952"]},"metasploit":null},{"id":"MSF_AUXILIARY_ADMIN_LDAP_VMWARE_VCENTER_VMDIR_AUTH_BYPASS","name":"VMware vCenter Server vmdir Authentication Bypass","source":"metasploit","url":"https://github.com/rapid7/metasploit-framework/blob/master/modules/auxiliary/admin/ldap/vmware_vcenter_vmdir_auth_bypass.rb","maturity":"poc","reliabilityScore":0.5,"verified":false,"type":"remote","platforms":[],"requiresAuth":true,"exploitdb":null,"metasploit":{"fullname":"auxiliary/admin/ldap/vmware_vcenter_vmdir_auth_bypass","rank":"300","rankName":"normal","postAuth":true,"check":true,"stability":["service-resource-loss"],"sideEffects":["ioc-in-logs","config-changes"],"reliability":[]}},{"id":"MSF_AUXILIARY_GATHER_VMWARE_VCENTER_VMDIR_LDAP","name":"VMware vCenter Server vmdir Information Disclosure","source":"metasploit","url":"https://github.com/rapid7/metasploit-framework/blob/master/modules/auxiliary/gather/vmware_vcenter_vmdir_ldap.rb","maturity":"poc","reliabilityScore":0.5,"verified":false,"type":"remote","platforms":[],"requiresAuth":false,"exploitdb":null,"metasploit":{"fullname":"auxiliary/gather/vmware_vcenter_vmdir_ldap","rank":"300","rankName":"normal","postAuth":false,"check":false,"stability":["crash-safe"],"sideEffects":["ioc-in-logs"],"reliability":[]}}],"exploitCount":4,"weaknesses":[{"id":"CWE-306","name":"Missing Authentication for Critical Function","description":"The product does not perform any authentication for functionality that requires a provable user identity or consumes a significant amount of resources.","type":"weakness","status":"Draft","abstraction":"Base","likelihoodOfExploit":"High","url":"https://cwe.mitre.org/data/definitions/306.html"}],"affected":[{"vendor":"vmware","product":"vcenter_server","name":"vCenter Server","label":"vcenter_server","ecosystem":null,"cpePart":"a","purl":null,"purlType":null,"versions":[{"text":"6.7","noFixRecorded":false,"fixedIn":null}],"versionsText":"6.7","eol":{"isEol":true,"eolDate":"2022-10-15T00:00:00.000Z","matchMethod":"cpe","cycle":{"name":"6.7","label":"6.7","eolFrom":"2022-10-15T00:00:00.000Z","isLts":false,"isMaintained":false,"latestVersion":"6.7 U3w"},"product":{"name":"vcenter","label":"VMware vCenter Server","category":"app"}},"hubHref":"/vendor/vmware/vcenter_server"}],"affectedCount":1,"eol":{"hasEol":true,"count":1},"references":[{"url":"https://www.vmware.com/security/advisories/VMSA-2020-0006","label":"www.vmware.com/security/advisories/VMSA-2020-0006","hostname":"www.vmware.com","tags":["X Refsource MISC","Broken Link","Vendor Advisory"]},{"url":"http://packetstormsecurity.com/files/157896/VMware-vCenter-Server-6.7-Authentication-Bypass.html","label":"packetstormsecurity.com/files/157896/VMware-vCenter-Server-6.7-Authentication-Bypass.html","hostname":"packetstormsecurity.com","tags":["X Refsource MISC","Exploit","Third Party Advisory","VDB Entry"]},{"url":"https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2020-3952","label":"www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2020-3952","hostname":"www.cisa.gov","tags":["Government Resource","US Government Resource"]}],"lineage":{"upstream":[],"downstream":[],"duplicates":[],"related":[]},"timeline":[{"kind":"published","date":"2020-04-10T13:55:36.000Z","label":"Published","detail":"Vulnerability first disclosed.","source":null},{"kind":"kev-added","date":"2021-11-03T00:00:00.000Z","label":"Added to CISA KEV","detail":"VMware vCenter Server Information Disclosure Vulnerability","source":"cisa"},{"kind":"kev-due","date":"2022-05-03T00:00:00.000Z","label":"CISA remediation due","detail":"Apply updates per vendor instructions.","source":"cisa"},{"kind":"modified","date":"2025-10-21T23:35:46.943Z","label":"Last modified","detail":"Vulnerability information updated.","source":null}],"risk":{"score":85,"level":"critical","profile":"Default","thresholds":{"critical":75,"high":50,"medium":25,"low":10}},"meta":{"dataAsOf":"2026-10-21T06:48:33.339Z","stale":false,"partial":false}}