CVE-2021-33907

{"containers": {"cna": {"affected": [{"product": "Zoom Client for Meetings for Windows", "vendor": "n/a", "versions": [{"status": "affected", "version": "All versions of the Zoom Client for Meetings for Windows before version 5.3.0"}]}], "descriptions": [{"lang": "en", "value": "The Zoom Client for Meetings for Windows in all versions before 5.3.0 fails to properly validate the certificate information used to sign .msi files when performing an update of the client. This could lead to remote code execution in an elevated privileged context."}], "problemTypes": [{"descriptions": [{"description": "Improper Verification of Crypto Signature", "lang": "en", "type": "text"}]}], "providerMetadata": {"dateUpdated": "2021-10-01T20:56:07.000Z", "orgId": "99b9af0d-a833-4a5d-9e2f-8b1324f35351", "shortName": "Zoom"}, "references": [{"tags": ["x_refsource_MISC"], "url": "https://explore.zoom.us/en/trust/security/security-bulletin/"}], "x_legacyV4Record": {"CVE_data_meta": {"ASSIGNER": "security@zoom.us", "ID": "CVE-2021-33907", "STATE": "PUBLIC"}, "affects": {"vendor": {"vendor_data": [{"product": {"product_data": [{"product_name": "Zoom Client for Meetings for Windows", "version": {"version_data": [{"version_value": "All versions of the Zoom Client for Meetings for Windows before version 5.3.0"}]}}]}, "vendor_name": "n/a"}]}}, "data_format": "MITRE", "data_type": "CVE", "data_version": "4.0", "description": {"description_data": [{"lang": "eng", "value": "The Zoom Client for Meetings for Windows in all versions before 5.3.0 fails to properly validate the certificate information used to sign .msi files when performing an update of the client. This could lead to remote code execution in an elevated privileged context."}]}, "problemtype": {"problemtype_data": [{"description": [{"lang": "eng", "value": "Improper Verification of Crypto Signature"}]}]}, "references": {"reference_data": [{"name": "https://explore.zoom.us/en/trust/security/security-bulletin/", "refsource": "MISC", "url": "https://explore.zoom.us/en/trust/security/security-bulletin/"}]}}}, "adp": [{"providerMetadata": {"orgId": "af854a3a-2127-422b-91ae-364da2661108", "shortName": "CVE", "dateUpdated": "2024-08-04T00:05:51.703Z"}, "title": "CVE Program Container", "references": [{"tags": ["x_refsource_MISC", "x_transferred"], "url": "https://explore.zoom.us/en/trust/security/security-bulletin/"}]}]}, "cveMetadata": {"assignerOrgId": "99b9af0d-a833-4a5d-9e2f-8b1324f35351", "assignerShortName": "Zoom", "cveId": "CVE-2021-33907", "datePublished": "2021-09-27T13:55:30.000Z", "dateReserved": "2021-06-07T00:00:00.000Z", "dateUpdated": "2024-08-04T00:05:51.703Z", "state": "PUBLISHED"}, "dataType": "CVE_RECORD", "dataVersion": "5.1"}

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{"affected": [{"affectedData": [{"product": "Zoom Client for Meetings for Windows", "vendor": "n/a", "versions": [{"status": "affected", "version": "All versions of the Zoom Client for Meetings for Windows before version 5.3.0"}]}], "source": "security@zoom.us"}], "configurations": [{"nodes": [{"cpeMatch": [{"criteria": "cpe:2.3:a:zoom:meetings:*:*:*:*:*:windows:*:*", "matchCriteriaId": "47D1059A-DCEF-4068-8C98-87B3F7729A6C", "versionEndExcluding": "5.3.0", "vulnerable": true}], "negate": false, "operator": "OR"}]}], "cveTags": [], "descriptions": [{"lang": "en", "value": "The Zoom Client for Meetings for Windows in all versions before 5.3.0 fails to properly validate the certificate information used to sign .msi files when performing an update of the client. This could lead to remote code execution in an elevated privileged context."}, {"lang": "es", "value": "Zoom Client for Meetings para Windows en todas las versiones anteriores a 5.3.0, no comprueba correctamente la informaci\u00f3n del certificado usada para firmar los archivos .msi cuando se lleva a cabo una actualizaci\u00f3n del cliente. Esto podr\u00eda conllevar a una ejecuci\u00f3n de c\u00f3digo remota en un contexto con privilegios elevados"}], "id": "CVE-2021-33907", "lastModified": "2026-06-17T03:55:21.507", "metrics": {"cvssMetricV2": [{"acInsufInfo": false, "baseSeverity": "HIGH", "cvssData": {"accessComplexity": "LOW", "accessVector": "NETWORK", "authentication": "NONE", "availabilityImpact": "COMPLETE", "baseScore": 10.0, "confidentialityImpact": "COMPLETE", "integrityImpact": "COMPLETE", "vectorString": "AV:N/AC:L/Au:N/C:C/I:C/A:C", "version": "2.0"}, "exploitabilityScore": 10.0, "impactScore": 10.0, "obtainAllPrivilege": false, "obtainOtherPrivilege": false, "obtainUserPrivilege": false, "source": "nvd@nist.gov", "type": "Primary", "userInteractionRequired": false}], "cvssMetricV31": [{"cvssData": {"attackComplexity": "LOW", "attackVector": "NETWORK", "availabilityImpact": "HIGH", "baseScore": 9.8, "baseSeverity": "CRITICAL", "confidentialityImpact": "HIGH", "integrityImpact": "HIGH", "privilegesRequired": "NONE", "scope": "UNCHANGED", "userInteraction": "NONE", "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H", "version": "3.1"}, "exploitabilityScore": 3.9, "impactScore": 5.9, "source": "nvd@nist.gov", "type": "Primary"}]}, "published": "2021-09-27T14:15:08.027", "references": [{"source": "security@zoom.us", "tags": ["Vendor Advisory"], "url": "https://explore.zoom.us/en/trust/security/security-bulletin/"}, {"source": "af854a3a-2127-422b-91ae-364da2661108", "tags": ["Vendor Advisory"], "url": "https://explore.zoom.us/en/trust/security/security-bulletin/"}], "sourceIdentifier": "security@zoom.us", "vulnStatus": "Modified", "weaknesses": [{"description": [{"lang": "en", "value": "CWE-295"}], "source": "nvd@nist.gov", "type": "Primary"}]}

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