Buffer overflow in Zoom Video Communications, Inc. products - CVE-2025-46789

Vulnerability identifier: #VU112510

CSH Severity: Medium

CVSS v4: 6.9 [CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:L/SC:N/SI:N/SA:N]

CVE-ID: CVE-2025-46789

CWE-ID: CWE-120

Exploitation vector: Remote access

Exploit availability: No public exploit available

The vulnerability allows a remote attacker to perform a denial of service (DoS) attack.

The vulnerability exists due to a boundary error. A remote attacker can send specially crated data to the client, trigger a buffer overflow and perform a denial of service (DoS) attack.

Zoom Workplace Desktop App for Windows
Zoom Rooms Client for Windows
Zoom Rooms Controller for Windows
Zoom Meeting SDK for Windows
Virtual Desktop Infrastructure (VDI)

Install updates from vendor's website.

Zoom Workplace Desktop App for Windows - update to 6.4.5 1259
Zoom Rooms Client for Windows - update to 6.4.5
Zoom Meeting SDK for Windows - update to 6.4.5
Zoom Rooms Controller for Windows - update to 6.4.5
Virtual Desktop Infrastructure (VDI) - addressed in versions 6.2.15.26110, 6.3.12.26120

• https://www.zoom.com/en/trust/security-bulletin/ZSB-25024/

• Denial of service in Zoom clients for Windows