{"api_version":"1","generated_at":"2026-07-24T00:13:03+00:00","cve":"CVE-2021-34409","urls":{"html":"https://cve.report/CVE-2021-34409","api":"https://cve.report/api/cve/CVE-2021-34409.json","docs":"https://cve.report/api","cve_org":"https://www.cve.org/CVERecord?id=CVE-2021-34409","nvd":"https://nvd.nist.gov/vuln/detail/CVE-2021-34409"},"summary":{"title":"CVE-2021-34409","description":"It was discovered that the installation packages of the Zoom Client for Meetings for MacOS (Standard and for IT Admin) installation before version 5.2.0, Zoom Client Plugin for Sharing iPhone/iPad before version 5.2.0, and Zoom Rooms for Conference before version 5.1.0, copy pre- and post- installation shell scripts to a user-writable directory. In the affected products listed below, a malicious actor with local access to a user's machine could use this flaw to potentially run arbitrary system commands in a higher privileged context during the installation process.","state":"PUBLIC","assigner":"security@zoom.us","published_at":"2021-09-27 14:15:00","updated_at":"2022-10-06 18:10:00"},"problem_types":["CWE-732"],"metrics":[],"references":[{"url":"https://cwe.mitre.org/data/definitions/379.html","name":"https://cwe.mitre.org/data/definitions/379.html","refsource":"MISC","tags":[],"title":"CWE -\r\n\n\t\tCWE-379: Creation of Temporary File in Directory with Insecure Permissions (4.4)","mime":"text/html","httpstatus":"200","archivestatus":"200"},{"url":"https://explore.zoom.us/en/trust/security/security-bulletin/","name":"https://explore.zoom.us/en/trust/security/security-bulletin/","refsource":"CONFIRM","tags":[],"title":"Security Bulletins | Zoom","mime":"text/html","httpstatus":"200","archivestatus":"200"},{"url":"https://explore.zoom.us/en/trust/security/security-bulletin","name":"https://explore.zoom.us/en/trust/security/security-bulletin","refsource":"MISC","tags":[],"title":"Security Bulletin | Zoom","mime":"text/html","httpstatus":"200","archivestatus":"200"},{"url":"https://www.cve.org/CVERecord?id=CVE-2021-34409","name":"CVE Program record","refsource":"CVE.ORG","tags":["canonical"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2021-34409","name":"NVD vulnerability detail","refsource":"NVD","tags":["canonical","analysis"]}],"affected":[],"timeline":[],"solutions":[],"workarounds":[],"exploits":[],"credits":[{"source":"LEGACY","value":"Lockheed Martin Red Team","lang":""}],"nvd_cpes":[{"cve_year":"2021","cve_id":"34409","vulnerable":"1","versionEndIncluding":"","cpe1":"cpe","cpe2":"2.3","cpe3":"a","cpe4":"zoom","cpe5":"meetings","cpe6":"*","cpe7":"*","cpe8":"*","cpe9":"*","cpe10":"*","cpe11":"macos","cpe12":"*","cpe13":"*"},{"cve_year":"2021","cve_id":"34409","vulnerable":"1","versionEndIncluding":"","cpe1":"cpe","cpe2":"2.3","cpe3":"a","cpe4":"zoom","cpe5":"rooms","cpe6":"*","cpe7":"*","cpe8":"*","cpe9":"*","cpe10":"*","cpe11":"*","cpe12":"*","cpe13":"*"},{"cve_year":"2021","cve_id":"34409","vulnerable":"1","versionEndIncluding":"","cpe1":"cpe","cpe2":"2.3","cpe3":"a","cpe4":"zoom","cpe5":"screen_sharing","cpe6":"*","cpe7":"*","cpe8":"*","cpe9":"*","cpe10":"*","cpe11":"ipados","cpe12":"*","cpe13":"*"},{"cve_year":"2021","cve_id":"34409","vulnerable":"1","versionEndIncluding":"","cpe1":"cpe","cpe2":"2.3","cpe3":"a","cpe4":"zoom","cpe5":"screen_sharing","cpe6":"*","cpe7":"*","cpe8":"*","cpe9":"*","cpe10":"*","cpe11":"iphone_os","cpe12":"*","cpe13":"*"}],"vendor_comments":[],"enrichments":{"kev":null,"epss":null,"legacy_qids":[{"cve":"CVE-2021-34409","qid":"377595","title":"Zoom Client for Meetings Local Privilege Escalation Vulnerability (ZSB-21005)"}]},"source_records":{"cve_program":{"CVE_data_meta":{"AKA":"Zoom Communications Inc","ASSIGNER":"security@zoom.us","DATE_PUBLIC":"2021-12-14T15:00:00.000Z","ID":"CVE-2021-34409","STATE":"PUBLIC","TITLE":"Zoom Client Installer Local Privilege Escalation"},"affects":{"vendor":{"vendor_data":[{"product":{"product_data":[{"product_name":"Zoom Client for Meetings for MacOS (Standard and for IT Admin)","version":{"version_data":[{"version_affected":"<","version_value":"5.2.0"}]}},{"product_name":"Zoom Client Plugin for Sharing iPhone/iPad","version":{"version_data":[{"version_affected":"<","version_value":"5.2.0"}]}},{"product_name":"Zoom Rooms for Conference","version":{"version_data":[{"version_affected":"<","version_value":"5.1.0"}]}}]},"vendor_name":"Zoom Video Communications Inc"}]}},"credit":[{"lang":"eng","value":"Lockheed Martin Red Team"}],"data_format":"MITRE","data_type":"CVE","data_version":"4.0","description":{"description_data":[{"lang":"eng","value":"It was discovered that the installation packages of the Zoom Client for Meetings for MacOS (Standard and for IT Admin) installation before version 5.2.0, Zoom Client Plugin for Sharing iPhone/iPad before version 5.2.0, and Zoom Rooms for Conference before version 5.1.0, copy pre- and post- installation shell scripts to a user-writable directory. In the affected products listed below, a malicious actor with local access to a user's machine could use this flaw to potentially run arbitrary system commands in a higher privileged context during the installation process."}]},"impact":{"cvss":{"attackComplexity":"HIGH","attackVector":"LOCAL","availabilityImpact":"HIGH","baseScore":7.8,"baseSeverity":"HIGH","confidentialityImpact":"HIGH","integrityImpact":"HIGH","privilegesRequired":"LOW","scope":"CHANGED","userInteraction":"NONE","vectorString":"CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:C/C:H/I:H/A:H","version":"3.1"}},"problemtype":{"problemtype_data":[{"description":[{"lang":"eng","value":"Creation of Temporary File in Directory with Insecure Permissions"}]}]},"references":{"reference_data":[{"refsource":"MISC","url":"https://explore.zoom.us/en/trust/security/security-bulletin","name":"https://explore.zoom.us/en/trust/security/security-bulletin"}]},"source":{"discovery":"USER"}},"nvd":{"publishedDate":"2021-09-27 14:15:00","lastModifiedDate":"2022-10-06 18:10:00","problem_types":["CWE-732"],"metrics":{"baseMetricV3":{"cvssV3":{"version":"3.1","vectorString":"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H","attackVector":"LOCAL","attackComplexity":"LOW","privilegesRequired":"LOW","userInteraction":"NONE","scope":"UNCHANGED","confidentialityImpact":"HIGH","integrityImpact":"HIGH","availabilityImpact":"HIGH","baseScore":7.8,"baseSeverity":"HIGH"},"exploitabilityScore":1.8,"impactScore":5.9},"baseMetricV2":{"cvssV2":{"version":"2.0","vectorString":"AV:L/AC:L/Au:N/C:C/I:C/A:C","accessVector":"LOCAL","accessComplexity":"LOW","authentication":"NONE","confidentialityImpact":"COMPLETE","integrityImpact":"COMPLETE","availabilityImpact":"COMPLETE","baseScore":7.2},"severity":"HIGH","exploitabilityScore":3.9,"impactScore":10,"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:zoom:meetings:*:*:*:*:*:macos:*:*","versionEndExcluding":"5.2.0","cpe_name":[]},{"vulnerable":true,"cpe23Uri":"cpe:2.3:a:zoom:rooms:*:*:*:*:*:*:*:*","versionEndExcluding":"5.1.0","cpe_name":[]},{"vulnerable":true,"cpe23Uri":"cpe:2.3:a:zoom:screen_sharing:*:*:*:*:*:ipados:*:*","versionEndExcluding":"5.2.0","cpe_name":[]},{"vulnerable":true,"cpe23Uri":"cpe:2.3:a:zoom:screen_sharing:*:*:*:*:*:iphone_os:*:*","versionEndExcluding":"5.2.0","cpe_name":[]}]}]}},"legacy_mitre":{"record":{"CveYear":"2021","CveId":"34409","Ordinal":"209868","Title":"CVE-2021-34409","CVE":"CVE-2021-34409","Year":"2021"},"notes":[{"CveYear":"2021","CveId":"34409","Ordinal":"1","NoteData":"It was discovered that the installation packages of the Zoom Client for Meetings for MacOS (Standard and for IT Admin) installation before version 5.2.0, Zoom Client Plugin for Sharing iPhone/iPad before version 5.2.0, and Zoom Rooms for Conference before version 5.1.0, copy pre- and post- installation shell scripts to a user-writable directory. In the affected products listed below, a malicious actor with local access to a user's machine could use this flaw to potentially run arbitrary system commands in a higher privileged context during the installation process.","Type":"Description","Title":null},{"CveYear":"2021","CveId":"34409","Ordinal":"2","NoteData":"2021-09-27","Type":"Other","Title":"Published"},{"CveYear":"2021","CveId":"34409","Ordinal":"3","NoteData":"2021-12-14","Type":"Other","Title":"Modified"}]}}}