{"api_version":"1","generated_at":"2026-07-23T22:02:06+00:00","cve":"CVE-2021-21973","urls":{"html":"https://cve.report/CVE-2021-21973","api":"https://cve.report/api/cve/CVE-2021-21973.json","docs":"https://cve.report/api","cve_org":"https://www.cve.org/CVERecord?id=CVE-2021-21973","nvd":"https://nvd.nist.gov/vuln/detail/CVE-2021-21973"},"summary":{"title":"CVE-2021-21973","description":"The vSphere Client (HTML5) contains an SSRF (Server Side Request Forgery) vulnerability due to improper validation of URLs in a vCenter Server plugin. A malicious actor with network access to port 443 may exploit this issue by sending a POST request to vCenter Server plugin leading to information disclosure. This affects: VMware vCenter Server (7.x before 7.0 U1c, 6.7 before 6.7 U3l and 6.5 before 6.5 U3n) and VMware Cloud Foundation (4.x before 4.2 and 3.x before 3.10.1.2).","state":"PUBLIC","assigner":"security@vmware.com","published_at":"2021-02-24 17:15:00","updated_at":"2021-08-24 10:59:00"},"problem_types":["CWE-918"],"metrics":[],"references":[{"url":"https://www.vmware.com/security/advisories/VMSA-2021-0002.html","name":"https://www.vmware.com/security/advisories/VMSA-2021-0002.html","refsource":"CONFIRM","tags":["Vendor Advisory"],"title":"VMSA-2021-0002","mime":"text/html","httpstatus":"200","archivestatus":"0"},{"url":"https://www.cve.org/CVERecord?id=CVE-2021-21973","name":"CVE Program record","refsource":"CVE.ORG","tags":["canonical"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2021-21973","name":"NVD vulnerability detail","refsource":"NVD","tags":["canonical","analysis"]}],"affected":[],"timeline":[],"solutions":[],"workarounds":[],"exploits":[],"credits":[],"nvd_cpes":[{"cve_year":"2021","cve_id":"21973","vulnerable":"1","versionEndIncluding":"","cpe1":"cpe","cpe2":"2.3","cpe3":"a","cpe4":"vmware","cpe5":"cloud_foundation","cpe6":"*","cpe7":"*","cpe8":"*","cpe9":"*","cpe10":"*","cpe11":"*","cpe12":"*","cpe13":"*"},{"cve_year":"2021","cve_id":"21973","vulnerable":"1","versionEndIncluding":"1","cpe1":"cpe","cpe2":"2.3","cpe3":"a","cpe4":"vmware","cpe5":"cloud_foundation","cpe6":"*","cpe7":"*","cpe8":"*","cpe9":"*","cpe10":"*","cpe11":"*","cpe12":"*","cpe13":"*"},{"cve_year":"2021","cve_id":"21973","vulnerable":"1","versionEndIncluding":"","cpe1":"cpe","cpe2":"2.3","cpe3":"a","cpe4":"vmware","cpe5":"vcenter_server","cpe6":"6.5","cpe7":"-","cpe8":"*","cpe9":"*","cpe10":"*","cpe11":"*","cpe12":"*","cpe13":"*"},{"cve_year":"2021","cve_id":"21973","vulnerable":"1","versionEndIncluding":"","cpe1":"cpe","cpe2":"2.3","cpe3":"a","cpe4":"vmware","cpe5":"vcenter_server","cpe6":"6.5","cpe7":"a","cpe8":"*","cpe9":"*","cpe10":"*","cpe11":"*","cpe12":"*","cpe13":"*"},{"cve_year":"2021","cve_id":"21973","vulnerable":"1","versionEndIncluding":"","cpe1":"cpe","cpe2":"2.3","cpe3":"a","cpe4":"vmware","cpe5":"vcenter_server","cpe6":"6.5","cpe7":"b","cpe8":"*","cpe9":"*","cpe10":"*","cpe11":"*","cpe12":"*","cpe13":"*"},{"cve_year":"2021","cve_id":"21973","vulnerable":"1","versionEndIncluding":"","cpe1":"cpe","cpe2":"2.3","cpe3":"a","cpe4":"vmware","cpe5":"vcenter_server","cpe6":"6.5","cpe7":"c","cpe8":"*","cpe9":"*","cpe10":"*","cpe11":"*","cpe12":"*","cpe13":"*"},{"cve_year":"2021","cve_id":"21973","vulnerable":"1","versionEndIncluding":"","cpe1":"cpe","cpe2":"2.3","cpe3":"a","cpe4":"vmware","cpe5":"vcenter_server","cpe6":"6.5","cpe7":"d","cpe8":"*","cpe9":"*","cpe10":"*","cpe11":"*","cpe12":"*","cpe13":"*"},{"cve_year":"2021","cve_id":"21973","vulnerable":"1","versionEndIncluding":"","cpe1":"cpe","cpe2":"2.3","cpe3":"a","cpe4":"vmware","cpe5":"vcenter_server","cpe6":"6.5","cpe7":"e","cpe8":"*","cpe9":"*","cpe10":"*","cpe11":"*","cpe12":"*","cpe13":"*"},{"cve_year":"2021","cve_id":"21973","vulnerable":"1","versionEndIncluding":"","cpe1":"cpe","cpe2":"2.3","cpe3":"a","cpe4":"vmware","cpe5":"vcenter_server","cpe6":"6.5","cpe7":"f","cpe8":"*","cpe9":"*","cpe10":"*","cpe11":"*","cpe12":"*","cpe13":"*"},{"cve_year":"2021","cve_id":"21973","vulnerable":"1","versionEndIncluding":"","cpe1":"cpe","cpe2":"2.3","cpe3":"a","cpe4":"vmware","cpe5":"vcenter_server","cpe6":"6.5","cpe7":"u1d","cpe8":"*","cpe9":"*","cpe10":"*","cpe11":"*","cpe12":"*","cpe13":"*"},{"cve_year":"2021","cve_id":"21973","vulnerable":"1","versionEndIncluding":"","cpe1":"cpe","cpe2":"2.3","cpe3":"a","cpe4":"vmware","cpe5":"vcenter_server","cpe6":"6.5","cpe7":"u1e","cpe8":"*","cpe9":"*","cpe10":"*","cpe11":"*","cpe12":"*","cpe13":"*"},{"cve_year":"2021","cve_id":"21973","vulnerable":"1","versionEndIncluding":"","cpe1":"cpe","cpe2":"2.3","cpe3":"a","cpe4":"vmware","cpe5":"vcenter_server","cpe6":"6.5","cpe7":"u1g","cpe8":"*","cpe9":"*","cpe10":"*","cpe11":"*","cpe12":"*","cpe13":"*"},{"cve_year":"2021","cve_id":"21973","vulnerable":"1","versionEndIncluding":"","cpe1":"cpe","cpe2":"2.3","cpe3":"a","cpe4":"vmware","cpe5":"vcenter_server","cpe6":"6.5","cpe7":"u2","cpe8":"*","cpe9":"*","cpe10":"*","cpe11":"*","cpe12":"*","cpe13":"*"},{"cve_year":"2021","cve_id":"21973","vulnerable":"1","versionEndIncluding":"","cpe1":"cpe","cpe2":"2.3","cpe3":"a","cpe4":"vmware","cpe5":"vcenter_server","cpe6":"6.5","cpe7":"u2b","cpe8":"*","cpe9":"*","cpe10":"*","cpe11":"*","cpe12":"*","cpe13":"*"},{"cve_year":"2021","cve_id":"21973","vulnerable":"1","versionEndIncluding":"","cpe1":"cpe","cpe2":"2.3","cpe3":"a","cpe4":"vmware","cpe5":"vcenter_server","cpe6":"6.5","cpe7":"u2c","cpe8":"*","cpe9":"*","cpe10":"*","cpe11":"*","cpe12":"*","cpe13":"*"},{"cve_year":"2021","cve_id":"21973","vulnerable":"1","versionEndIncluding":"","cpe1":"cpe","cpe2":"2.3","cpe3":"a","cpe4":"vmware","cpe5":"vcenter_server","cpe6":"6.5","cpe7":"u2d","cpe8":"*","cpe9":"*","cpe10":"*","cpe11":"*","cpe12":"*","cpe13":"*"},{"cve_year":"2021","cve_id":"21973","vulnerable":"1","versionEndIncluding":"","cpe1":"cpe","cpe2":"2.3","cpe3":"a","cpe4":"vmware","cpe5":"vcenter_server","cpe6":"6.5","cpe7":"u2g","cpe8":"*","cpe9":"*","cpe10":"*","cpe11":"*","cpe12":"*","cpe13":"*"},{"cve_year":"2021","cve_id":"21973","vulnerable":"1","versionEndIncluding":"","cpe1":"cpe","cpe2":"2.3","cpe3":"a","cpe4":"vmware","cpe5":"vcenter_server","cpe6":"6.5","cpe7":"u3","cpe8":"*","cpe9":"*","cpe10":"*","cpe11":"*","cpe12":"*","cpe13":"*"},{"cve_year":"2021","cve_id":"21973","vulnerable":"1","versionEndIncluding":"","cpe1":"cpe","cpe2":"2.3","cpe3":"a","cpe4":"vmware","cpe5":"vcenter_server","cpe6":"6.5","cpe7":"u3d","cpe8":"*","cpe9":"*","cpe10":"*","cpe11":"*","cpe12":"*","cpe13":"*"},{"cve_year":"2021","cve_id":"21973","vulnerable":"1","versionEndIncludin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This allows for information disclosure.","requiredAction":"Apply updates per vendor instructions.","dueDate":"2022-03-21","knownRansomwareCampaignUse":"Unknown","notes":"https://nvd.nist.gov/vuln/detail/CVE-2021-21973","cwes":"CWE-20,CWE-918","catalogVersion":"2026.07.23","updated_at":"2026-07-23 17:19:19"},"epss":{"cve_year":"2021","cve_id":"21973","cve":"CVE-2021-21973","epss":"0.880120000","percentile":"0.997510000","score_date":"2026-07-22","updated_at":"2026-07-23 00:09:33"},"legacy_qids":[{"cve":"CVE-2021-21973","qid":"216253","title":"VMware vCenter Server 7.0 Update 7.0 U1c Missing (VMSA-2021-0002)"},{"cve":"CVE-2021-21973","qid":"216254","title":"VMware vCenter Server 6.7 Update 6.7 U3l Missing (VMSA-2021-0002)"},{"cve":"CVE-2021-21973","qid":"216255","title":"VMware vCenter Server 6.5 Update 6.5 U3n Missing (VMSA-2021-0002)"}]},"source_records":{"cve_program":{"data_type":"CVE","data_format":"MITRE","data_version":"4.0","CVE_data_meta":{"ID":"CVE-2021-21973","ASSIGNER":"security@vmware.com","STATE":"PUBLIC"},"affects":{"vendor":{"vendor_data":[{"vendor_name":"n/a","product":{"product_data":[{"product_name":"VMware vCenter Server","version":{"version_data":[{"version_value":"7.x before 7.0 U1c"},{"version_value":"6.7 before 6.7 U3l"},{"version_value":"6.5 before 6.5 U3n"}]}},{"product_name":"VMware Cloud Foundation","version":{"version_data":[{"version_value":"4.x before 4.2"},{"version_value":"3.x before 3.10.1.2"}]}}]}}]}},"problemtype":{"problemtype_data":[{"description":[{"lang":"eng","value":"SSRF vulnerability"}]}]},"references":{"reference_data":[{"refsource":"CONFIRM","name":"https://www.vmware.com/security/advisories/VMSA-2021-0002.html","url":"https://www.vmware.com/security/advisories/VMSA-2021-0002.html"}]},"description":{"description_data":[{"lang":"eng","value":"The vSphere Client (HTML5) contains an SSRF (Server Side Request Forgery) vulnerability due to improper validation of URLs in a vCenter Server plugin. A malicious actor with network access to port 443 may exploit this issue by sending a POST request to vCenter Server plugin leading to information disclosure. This affects: VMware vCenter Server (7.x before 7.0 U1c, 6.7 before 6.7 U3l and 6.5 before 6.5 U3n) and VMware Cloud Foundation (4.x before 4.2 and 3.x before 3.10.1.2)."}]}},"nvd":{"publishedDate":"2021-02-24 17:15:00","lastModifiedDate":"2021-08-24 10:59:00","problem_types":["CWE-918"],"metrics":{"baseMetricV3":{"cvssV3":{"version":"3.1","vectorString":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N","attackVector":"NETWORK","attackComplexity":"LOW","privilegesRequired":"NONE","userInteraction":"NONE","scope":"UNCHANGED","confidentialityImpact":"LOW","integrityImpact":"NONE","availabilityImpact":"NONE","baseScore":5.3,"baseSeverity":"MEDIUM"},"exploitabilityScore":3.9,"impactScore":1.4},"baseMetricV2":{"cvssV2":{"version":"2.0","vectorString":"AV:N/AC:L/Au:N/C:P/I:N/A:N","accessVector":"NETWORK","accessComplexity":"LOW","authentication":"NONE","confidentialityImpact":"PARTIAL","integrityImpact":"NONE","availabilityImpact":"NONE","baseScore":5},"severity":"MEDIUM","exploitabilityScore":10,"impactScore":2.9,"acInsufInfo":false,"obtainAllPrivilege":false,"obtainUserPrivilege":false,"obtainOtherPrivilege":false,"userInteractionRequired":false}},"configurations":{"CVE_data_version":"4.0","nodes":[{"operator":"OR","children":[],"cpe_match":[{"vulnerable":true,"cpe23Uri":"cpe:2.3:a:vmware:vcenter_server:6.5:f:*:*:*:*:*:*","cpe_name":[]},{"vulnerable":true,"cpe23Uri":"cpe:2.3:a:vmware:vcenter_server:6.5:e:*:*:*:*:*:*","cpe_name":[]},{"vulnerable":true,"cpe23Uri":"cpe:2.3:a:vmware:vcenter_server:6.5:d:*:*:*:*:*:*","cpe_name":[]},{"vulnerable":true,"cpe23Uri":"cpe:2.3:a:vmware:vcenter_server:6.5:c:*:*:*:*:*:*","cpe_name":[]},{"vulnerable":true,"cpe23Uri":"cpe:2.3:a:vmware:vcenter_server:6.5:b:*:*:*:*:*:*","cpe_name":[]},{"vulnerable":true,"cpe23Uri":"cpe:2.3:a:vmware:vcenter_server:6.5:a:*:*:*:*:*:*","cpe_name":[]},{"vulnerable":true,"cpe23Uri":"cpe:2.3:a:vmware:vcenter_server:6.7:d:*:*:*:*:*:*","cpe_name":[]},{"vulnerable":true,"cpe23Uri":"cpe:2.3:a:vmware:vcenter_server:6.7:b:*:*:*:*:*:*","cpe_name":[]},{"vulnerable":true,"cpe23Uri":"cpe:2.3:a:vmware:vcenter_server:6.7:a:*:*:*:*:*:*","cpe_name":[]},{"vulnerable":true,"cpe23Uri":"cpe:2.3:a:vmware:vcenter_server:6.5:-:*:*:*:*:*:*","cpe_name":[]},{"vulnerable":true,"cpe23Uri":"cpe:2.3:a:vmware:vcenter_server:6.7:-:*:*:*:*:*:*","cpe_name":[]},{"vulnerable":true,"cpe23Uri":"cpe:2.3:a:vmware:vcenter_server:7.0:-:*:*:*:*:*:*","cpe_name":[]},{"vulnerable":true,"cpe23Uri":"cpe:2.3:a:vmware:cloud_foundation:*:*:*:*:*:*:*:*","versionStartIncluding":"3.0","versionEndExcluding":"3.10.1.2","cpe_name":[]},{"vulnerable":true,"cpe23Uri":"cpe:2.3:a:vmware:cloud_foundation:*:*:*:*:*:*:*:*","versionStartIncluding":"4.0","versionEndExcluding":"4.2","cpe_name":[]},{"vulnerable":true,"cpe23Uri":"cpe:2.3:a:vmware:vcenter_server:7.0:d:*:*:*:*:*:*","cpe_name":[]},{"vulnerable":true,"cpe23Uri":"cpe:2.3:a:vmware:vcenter_server:7.0:c:*:*:*:*:*:*","cpe_name":[]},{"vulnerable":true,"cpe23Uri":"cpe:2.3:a:vmware:vcenter_server:7.0:b:*:*:*:*:*:*","cpe_name":[]},{"vulnerable":true,"cpe23Uri":"cpe:2.3:a:vmware:vcenter_server:7.0:a:*:*:*:*:*:*","cpe_name":[]},{"vulnerable":true,"cpe23Uri":"cpe:2.3:a:vmware:vcenter_server:6.5:update3:*:*:*:*:*:*","cpe_name":[]},{"vulnerable":true,"cpe23Uri":"cpe:2.3:a:vmware:vcenter_server:6.5:update3d:*:*:*:*:*:*","cpe_name":[]},{"vulnerable":true,"cpe23Uri":"cpe:2.3:a:vmware:vcenter_server:6.5:update3k:*:*:*:*:*:*","cpe_name":[]},{"vulnerable":true,"cpe23Uri":"cpe:2.3:a:vmware:vcenter_server:6.5:update3f:*:*:*:*:*:*","cpe_name":[]},{"vulnerable":true,"cpe23Uri":"cpe:2.3:a:vmware:vcenter_server:6.5:update1d:*:*:*:*:*:*","cpe_name":[]},{"vulnerable":true,"cpe23Uri":"cpe:2.3:a:vmware:vcenter_server:6.5:update1e:*:*:*:*:*:*","cpe_name":[]},{"vulnerable":true,"cpe23Uri":"cpe:2.3:a:vmware:vcenter_server:6.5:update1g:*:*:*:*:*:*","cpe_name":[]},{"vulnerable":true,"cpe23Uri":"cpe:2.3:a:vmware:vcenter_server:6.5:update2:*:*:*:*:*:*","cpe_name":[]},{"vulnerable":true,"cpe23Uri":"cpe:2.3:a:vmware:vcenter_server:6.5:update2b:*:*:*:*:*:*","cpe_name":[]},{"vulnerable":true,"cpe23Uri":"cpe:2.3:a:vmware:vcenter_server:6.5:update2c:*:*:*:*:*:*","cpe_name":[]},{"vulnerable":true,"cpe23Uri":"cpe:2.3:a:vmware:vcenter_server:6.5:update2d:*:*:*:*:*:*","cpe_name":[]},{"vulnerable":true,"cpe23Uri":"cpe:2.3:a:vmware:vcenter_server:6.5:update2g:*:*:*:*:*:*","cpe_name":[]},{"vulnerable":true,"cpe23Uri":"cpe:2.3:a:vmware:vcenter_server:6.7:update3f:*:*:*:*:*:*","cpe_name":[]},{"vulnerable":true,"cpe23Uri":"cpe:2.3:a:vmware:vcenter_server:7.0:update1a:*:*:*:*:*:*","cpe_name":[]},{"vulnerable":true,"cpe23Uri":"cpe:2.3:a:vmware:vcenter_server:7.0:update1:*:*:*:*:*:*","cpe_name":[]},{"vulnerable":true,"cpe23Uri":"cpe:2.3:a:vmware:vcenter_server:6.7:update3j:*:*:*:*:*:*","cpe_name":[]},{"vulnerable":true,"cpe23Uri":"cpe:2.3:a:vmware:vcenter_server:6.7:update3b:*:*:*:*:*:*","cpe_name":[]},{"vulnerable":true,"cpe23Uri":"cpe:2.3:a:vmware:vcenter_server:6.7:update3g:*:*:*:*:*:*","cpe_name":[]},{"vulnerable":true,"cpe23Uri":"cpe:2.3:a:vmware:vcenter_server:6.7:update1:*:*:*:*:*:*","cpe_name":[]},{"vulnerable":true,"cpe23Uri":"cpe:2.3:a:vmware:vcenter_server:6.7:update1b:*:*:*:*:*:*","cpe_name":[]},{"vulnerable":true,"cpe23Uri":"cpe:2.3:a:vmware:vcent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vSphere Client (HTML5) contains an SSRF (Server Side Request Forgery) vulnerability due to improper validation of URLs in a vCenter Server plugin. A malicious actor with network access to port 443 may exploit this issue by sending a POST request to vCenter Server plugin leading to information disclosure. This affects: VMware vCenter Server (7.x before 7.0 U1c, 6.7 before 6.7 U3l and 6.5 before 6.5 U3n) and VMware Cloud Foundation (4.x before 4.2 and 3.x before 3.10.1.2).","Type":"Description","Title":null},{"CveYear":"2021","CveId":"21973","Ordinal":"2","NoteData":"2021-02-24","Type":"Other","Title":"Published"},{"CveYear":"2021","CveId":"21973","Ordinal":"3","NoteData":"2021-02-24","Type":"Other","Title":"Modified"}]}}}