CVE-2023-49646 - Vulnerability Details - OpenCVE

Improper authentication in some Zoom clients before version 5.16.5 may allow an authenticated user to conduct a denial of service via network access.

No CVSS v4.0

Attack Vector Network

Attack Complexity Low

Privileges Required Low

Scope Changed

Confidentiality Impact None

Integrity Impact Low

Availability Impact Low

User Interaction None

No CVSS v3.0

No CVSS v2

This CVE is not in the KEV list.

The EPSS score is 0.00403.

Exploitation none

Automatable no

Technical Impact partial

Vendors	Products
Zoom Subscribe	Meeting Software Development Kit Subscribe Video Software Development Kit Subscribe Virtual Desktop Infrastructure Subscribe Zoom Subscribe

Configuration 1 [-]

OR	cpe:2.3:a:zoom:meeting_software_development_kit::::::::
	cpe:2.3:a:zoom:video_software_development_kit::::::::
	cpe:2.3:a:zoom:virtual_desktop_infrastructure::::::::
	cpe:2.3:a:zoom:virtual_desktop_infrastructure::::::::
	cpe:2.3:a:zoom:zoom::::::android::*
	cpe:2.3:a:zoom:zoom::::::iphone_os::*
	cpe:2.3:a:zoom:zoom::::::linux::*
	cpe:2.3:a:zoom:zoom::::::macos::*
	cpe:2.3:a:zoom:zoom::::::windows::*

No data.

No data.

Advisories

Source	ID	Title
EUVD	EUVD-2023-53588	Improper authentication in some Zoom clients before version 5.16.5 may allow an authenticated user to conduct a denial of service via network access.

Fixes

Solution

No solution given by the vendor.

Workaround

No workaround given by the vendor.

References

Link	Providers
https://www.zoom.com/en/trust/security-bulletin/ZSB-23062/

History

Mon, 02 Nov 2026 23:30:00 +0000

Type	Values Removed	Values Added
Metrics		ssvc `{'options': {'Automatable': 'no', 'Exploitation': 'none', 'Technical Impact': 'partial'}, 'version': '2.0.3'}`

Fri, 20 Sep 2024 15:00:00 +0000

Type	Values Removed	Values Added
Weaknesses		CWE-347

Projects

Sign in to view the affected projects.

MITRE

Status: PUBLISHED

Assigner: Zoom

Published: 2023-12-13T22:19:26.963Z

Updated: 2026-11-02T22:41:19.198Z

Reserved: 2023-11-28T18:18:33.930Z

Link: CVE-2023-49646

Vulnrichment

Updated: 2024-08-02T22:01:25.386Z

NVD

Status : Modified

Published: 2023-12-13T23:15:08.357

Modified: 2026-11-02T23:17:18.093

Link: CVE-2023-49646

Redhat

No data.

OpenCVE Enrichment

No data.

Weaknesses

{"dataType": "CVE_RECORD", "dataVersion": "5.2", "cveMetadata": {"cveId": "CVE-2023-49646", "assignerOrgId": "99b9af0d-a833-4a5d-9e2f-8b1324f35351", "state": "PUBLISHED", "assignerShortName": "Zoom", "dateReserved": "2023-11-28T18:18:33.930Z", "datePublished": "2023-12-13T22:19:26.963Z", "dateUpdated": "2026-11-02T22:41:19.198Z"}, "containers": {"cna": {"affected": [{"defaultStatus": "unaffected", "platforms": ["Windows", "MacOS", "Linux", "iOS", "Android"], "product": "Zoom Clients", "vendor": "Zoom Video Communications, Inc.", "versions": [{"status": "affected", "version": "See references"}]}], "datePublic": "2023-12-12T16:00:00.000Z", "descriptions": [{"lang": "en", "supportingMedia": [{"base64": false, "type": "text/html", "value": "Improper authentication in some Zoom clients before version 5.16.5 may allow an authenticated user to conduct a denial of service via network access."}], "value": "Improper authentication in some Zoom clients before version 5.16.5 may allow an authenticated user to conduct a denial of service via network access."}], "metrics": [{"cvssV3_1": {"attackComplexity": "LOW", "attackVector": "NETWORK", "availabilityImpact": "LOW", "baseScore": 6.4, "baseSeverity": "MEDIUM", "confidentialityImpact": "NONE", "integrityImpact": "LOW", "privilegesRequired": "LOW", "scope": "CHANGED", "userInteraction": "NONE", "vectorString": "CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:N/I:L/A:L", "version": "3.1"}, "format": "CVSS", "scenarios": [{"lang": "en", "value": "GENERAL"}]}], "problemTypes": [{"descriptions": [{"cweId": "CWE-347", "description": "CWE-347 Improper Verification of Cryptographic Signature", "lang": "en", "type": "CWE"}]}], "providerMetadata": {"orgId": "99b9af0d-a833-4a5d-9e2f-8b1324f35351", "shortName": "Zoom", "dateUpdated": "2024-09-20T14:53:41.733Z"}, "references": [{"url": "https://www.zoom.com/en/trust/security-bulletin/ZSB-23062/"}], "source": {"discovery": "UNKNOWN"}, "x_generator": {"engine": "Vulnogram 0.1.0-dev"}}, "adp": [{"providerMetadata": {"orgId": "af854a3a-2127-422b-91ae-364da2661108", "shortName": "CVE", "dateUpdated": "2024-08-02T22:01:25.386Z"}, "title": "CVE Program Container", "references": [{"url": "https://www.zoom.com/en/trust/security-bulletin/ZSB-23062/", "tags": ["x_transferred"]}]}, {"metrics": [{"other": {"type": "ssvc", "content": {"timestamp": "2026-11-02T22:41:14.131531Z", "id": "CVE-2023-49646", "options": [{"Exploitation": "none"}, {"Automatable": "no"}, {"Technical Impact": "partial"}], "role": "CISA Coordinator", "version": "2.0.3"}}}], "title": "CISA ADP Vulnrichment", "providerMetadata": {"orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "shortName": "CISA-ADP", "dateUpdated": "2026-11-02T22:41:19.198Z"}}]}}

{"dataType": "CVE_RECORD", "containers": {"adp": [{"title": "CVE Program Container", "references": [{"url": "https://www.zoom.com/en/trust/security-bulletin/ZSB-23062/", "tags": ["x_transferred"]}], "providerMetadata": {"orgId": "af854a3a-2127-422b-91ae-364da2661108", "shortName": "CVE", "dateUpdated": "2024-08-02T22:01:25.386Z"}}, {"title": "CISA ADP Vulnrichment", "metrics": [{"other": {"type": "ssvc", "content": {"id": "CVE-2023-49646", "role": "CISA Coordinator", "options": [{"Exploitation": "none"}, {"Automatable": "no"}, {"Technical Impact": "partial"}], "version": "2.0.3", "timestamp": "2026-11-02T22:41:14.131531Z"}}}], "providerMetadata": {"orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "shortName": "CISA-ADP", "dateUpdated": "2025-05-28T16:14:23.626Z"}}], "cna": {"source": {"discovery": "UNKNOWN"}, "metrics": [{"format": "CVSS", "cvssV3_1": {"scope": "CHANGED", "version": "3.1", "baseScore": 6.4, "attackVector": "NETWORK", "baseSeverity": "MEDIUM", "vectorString": "CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:N/I:L/A:L", "integrityImpact": "LOW", "userInteraction": "NONE", "attackComplexity": "LOW", "availabilityImpact": "LOW", "privilegesRequired": "LOW", "confidentialityImpact": "NONE"}, "scenarios": [{"lang": "en", "value": "GENERAL"}]}], "affected": [{"vendor": "Zoom Video Communications, Inc.", "product": "Zoom Clients", "versions": [{"status": "affected", "version": "See references"}], "platforms": ["Windows", "MacOS", "Linux", "iOS", "Android"], "defaultStatus": "unaffected"}], "datePublic": "2023-12-12T16:00:00.000Z", "references": [{"url": "https://www.zoom.com/en/trust/security-bulletin/ZSB-23062/"}], "x_generator": {"engine": "Vulnogram 0.1.0-dev"}, "descriptions": [{"lang": "en", "value": "Improper authentication in some Zoom clients before version 5.16.5 may allow an authenticated user to conduct a denial of service via network access.", "supportingMedia": [{"type": "text/html", "value": "Improper authentication in some Zoom clients before version 5.16.5 may allow an authenticated user to conduct a denial of service via network access.", "base64": false}]}], "problemTypes": [{"descriptions": [{"lang": "en", "type": "CWE", "cweId": "CWE-347", "description": "CWE-347 Improper Verification of Cryptographic Signature"}]}], "providerMetadata": {"orgId": "99b9af0d-a833-4a5d-9e2f-8b1324f35351", "shortName": "Zoom", "dateUpdated": "2024-09-20T14:53:41.733Z"}}}, "cveMetadata": {"cveId": "CVE-2023-49646", "state": "PUBLISHED", "dateUpdated": "2026-11-02T22:41:19.198Z", "dateReserved": "2023-11-28T18:18:33.930Z", "assignerOrgId": "99b9af0d-a833-4a5d-9e2f-8b1324f35351", "datePublished": "2023-12-13T22:19:26.963Z", "assignerShortName": "Zoom"}, "dataVersion": "5.2"}

{"affected": [{"affectedData": [{"defaultStatus": "unaffected", "platforms": ["Windows", "MacOS", "Linux", "iOS", "Android"], "product": "Zoom Clients", "vendor": "Zoom Video Communications, Inc.", "versions": [{"status": "affected", "version": "See references"}]}], "source": "[email protected]"}], "configurations": [{"nodes": [{"cpeMatch": [{"criteria": "cpe:2.3:a:zoom:meeting_software_development_kit:*:*:*:*:*:*:*:*", "matchCriteriaId": "0105F955-25C8-4582-BD05-8BCD48BFF3D6", "versionEndExcluding": "5.16.5", "vulnerable": true}, {"criteria": "cpe:2.3:a:zoom:video_software_development_kit:*:*:*:*:*:*:*:*", "matchCriteriaId": "BAE70E1D-8C4A-4EB6-96A8-16C53DB5C79B", "versionEndExcluding": "5.16.5", "vulnerable": true}, {"criteria": "cpe:2.3:a:zoom:virtual_desktop_infrastructure:*:*:*:*:*:*:*:*", "matchCriteriaId": "D33A3D73-DB80-4376-A9EE-2905A4B0B4B7", "versionEndExcluding": "5.14.14", "vulnerable": true}, {"criteria": "cpe:2.3:a:zoom:virtual_desktop_infrastructure:*:*:*:*:*:*:*:*", "matchCriteriaId": "33411E35-8D01-42E4-85D6-0FE2C416E697", "versionEndExcluding": "5.15.12", "versionStartIncluding": "5.15.0", "vulnerable": true}, {"criteria": "cpe:2.3:a:zoom:zoom:*:*:*:*:*:android:*:*", "matchCriteriaId": "F0EA451C-C4DC-48EF-A036-3EEA3E3ADD80", "versionEndExcluding": "5.16.5", "vulnerable": true}, {"criteria": "cpe:2.3:a:zoom:zoom:*:*:*:*:*:iphone_os:*:*", "matchCriteriaId": "C2BF4129-CA54-4ECB-9A6B-EC28445233DF", "versionEndExcluding": "5.16.5", "vulnerable": true}, {"criteria": "cpe:2.3:a:zoom:zoom:*:*:*:*:*:linux:*:*", "matchCriteriaId": "AD4CD81C-1F22-45CA-8AB1-D6D59E819759", "versionEndExcluding": "5.16.5", "vulnerable": true}, {"criteria": "cpe:2.3:a:zoom:zoom:*:*:*:*:*:macos:*:*", "matchCriteriaId": "BB9276FF-17D3-4FDB-91BB-2CE6E8BA61A0", "versionEndExcluding": "5.16.5", "vulnerable": true}, {"criteria": "cpe:2.3:a:zoom:zoom:*:*:*:*:*:windows:*:*", "matchCriteriaId": "19B08EB3-7EBF-416F-91B9-4600E47567F7", "versionEndExcluding": "5.16.5", "vulnerable": true}], "negate": false, "operator": "OR"}]}], "cveTags": [], "descriptions": [{"lang": "en", "value": "Improper authentication in some Zoom clients before version 5.16.5 may allow an authenticated user to conduct a denial of service via network access."}, {"lang": "es", "value": "La autenticaci\u00f3n incorrecta en Zoom clients anteriores a la versi\u00f3n 5.16.5 puede permitir que un usuario autenticado realice una denegaci\u00f3n de servicio a trav\u00e9s del acceso a la red."}], "id": "CVE-2023-49646", "lastModified": "2026-11-02T23:17:18.093", "metrics": {"cvssMetricV31": [{"cvssData": {"attackComplexity": "LOW", "attackVector": "NETWORK", "availabilityImpact": "LOW", "baseScore": 6.4, "baseSeverity": "MEDIUM", "confidentialityImpact": "NONE", "integrityImpact": "LOW", "privilegesRequired": "LOW", "scope": "CHANGED", "userInteraction": "NONE", "vectorString": "CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:N/I:L/A:L", "version": "3.1"}, "exploitabilityScore": 3.1, "impactScore": 2.7, "source": "[email protected]", "type": "Secondary"}, {"cvssData": {"attackComplexity": "LOW", "attackVector": "NETWORK", "availabilityImpact": "HIGH", "baseScore": 6.5, "baseSeverity": "MEDIUM", "confidentialityImpact": "NONE", "integrityImpact": "NONE", "privilegesRequired": "LOW", "scope": "UNCHANGED", "userInteraction": "NONE", "vectorString": "CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H", "version": "3.1"}, "exploitabilityScore": 2.8, "impactScore": 3.6, "source": "[email protected]", "type": "Primary"}], "ssvcV203": [{"source": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "ssvcData": {"id": "CVE-2023-49646", "options": [{"exploitation": "none"}, {"automatable": "no"}, {"technicalImpact": "partial"}], "role": "CISA Coordinator", "timestamp": "2026-11-02T22:41:14.131531Z", "version": "2.0.3"}}]}, "published": "2023-12-13T23:15:08.357", "references": [{"source": "[email protected]", "tags": ["Vendor Advisory"], "url": "https://www.zoom.com/en/trust/security-bulletin/ZSB-23062/"}, {"source": "af854a3a-2127-422b-91ae-364da2661108", "tags": ["Vendor Advisory"], "url": "https://www.zoom.com/en/trust/security-bulletin/ZSB-23062/"}], "sourceIdentifier": "[email protected]", "vulnStatus": "Modified", "weaknesses": [{"description": [{"lang": "en", "value": "CWE-347"}], "source": "[email protected]", "type": "Secondary"}, {"description": [{"lang": "en", "value": "CWE-287"}], "source": "[email protected]", "type": "Primary"}]}