NULL pointer dereference in Zoom Video Communications, Inc. products - CVE-2025-30666

Vulnerability identifier: #VU109005

CSH Severity: Low

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-2025-30666

CWE-ID: CWE-476

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 NULL pointer dereference error. A remote attacker can pass specially crafted data to the application and crash it.

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 6.4.0
Zoom Rooms Client for Windows - update to 6.4.0
Zoom Meeting SDK for Windows - update to 6.4.0
Virtual Desktop Infrastructure (VDI) - addressed in versions 6.1.17.25840, 6.2.13.25860, 6.3.10.25910
Zoom Rooms Controller for Windows - update to 6.4.0

• https://www.zoom.com/en/trust/security-bulletin/ZSB-25018/

• Multiple vulnerabilities in Zoom applications