CVE-2023-49646
mediumImproper authentication in some Zoom clients before version 5.16.5 may allow an authenticated user to conduct a denial of service via network access.
Vendor / product: Zoom — meeting software development kit
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.
CVSS
6.5
6.5 (CVSS v3.1)
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H Severity source: NVD CVSS v3.1 (nvd@nist.gov)
Timeline (UTC)
Published: 2023-12-13 23:15
Modified: 2026-11-02 23:17
NVD status: Modified
Last synced 1 day ago
Verified against the source API 2026-11-03 07:33 UTC
Exploitation
Not listed in CISA KEV (as of last catalog sync)
Absence from KEV does not mean a CVE is not exploited. Exploitation status: unknown (no authoritative evidence in our sources).
Affected products
zoom / meeting_software_development_kit <5.16.5
zoom / video_software_development_kit <5.16.5
zoom / virtual_desktop_infrastructure <5.14.14, ≥5.15.0 <5.15.12
zoom / zoom <5.16.5
Weakness classification (CWE)
Source: NVD / CISA. “NVD-CWE-Other” and “NVD-CWE-noinfo” mean NVD could not assign a specific weakness.
Mitigation & advisories
Vendor advisory: https://www.zoom.com/en/trust/security-bulletin/ZSB-23062/
Vendor advisory: https://www.zoom.com/en/trust/security-bulletin/ZSB-23062/
References
- https://www.zoom.com/en/trust/security-bulletin/ZSB-23062/ security@zoom.us
- https://www.zoom.com/en/trust/security-bulletin/ZSB-23062/ af854a3a-2127-422b-91ae-364da2661108
Data sources
NVD CVE API 2.0 — fetched 2026-11-03 07:33 UTC · record ↗