Buffer underflow in Zoom Video Communications, Inc. products - CVE-2025-27439

Vulnerability identifier: #VU105773

CSH Severity: High

CVSS v4: 7.5 [CVSS:4.0/AV:N/AC:H/AT:N/PR:N/UI:A/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N]

CVE-ID: CVE-2025-27439

CWE-ID: CWE-124

Exploitation vector: Remote access

Exploit availability: No public exploit available

The vulnerability allows a remote attacker to execute arbitrary code on the target system.

The vulnerability exists due to a boundary error. A remote attacker can trick victim into performing certain actions within the application, trigger a buffer underflow and execute arbitrary code on the target system.

Successful exploitation of this vulnerability may result in complete compromise of vulnerable system.

Zoom Workplace Desktop App for Windows
Zoom Rooms Client for macOS
Zoom Rooms Client for Windows
Zoom Workplace Desktop App for macOS
Zoom Workplace Desktop App for Linux
Zoom Rooms Controller for Linux
Zoom Rooms Controller for macOS
Zoom Rooms Controller for Windows
Zoom Workplace App for iOS
Zoom Workplace App for Android
Zoom Rooms Client for iPad
Zoom Rooms Controller for Android
Zoom Rooms Client for Android
Zoom Meeting SDK for iOS
Zoom Meeting SDK for Windows
Zoom Meeting SDK for macOS
Zoom Meeting SDK for Android
Zoom Meeting SDK for Linux
Virtual Desktop Infrastructure (VDI)

Install updates from vendor's website.

Zoom Workplace Desktop App for Windows - update to 6.3.0 52884
Zoom Rooms Client for macOS - update to 6.3.0
Zoom Rooms Client for Windows - update to 6.3.0
Zoom Workplace Desktop App for macOS - update to 6.3.0 44805
Zoom Workplace App for iOS - update to 6.3.0 20766
Zoom Workplace App for Android - update to 6.3.0 26355
Zoom Workplace Desktop App for Linux - update to 6.3.0 5527
Zoom Meeting SDK for iOS - update to 6.3.0
Zoom Meeting SDK for Windows - update to 6.3.0
Zoom Meeting SDK for macOS - update to 6.3.0
Zoom Meeting SDK for Android - update to 6.3.0
Zoom Meeting SDK for Linux - update to 6.3.0
Zoom Rooms Client for iPad - update to 6.3.0
Zoom Rooms Controller for Linux - update to 6.3.0
Zoom Rooms Controller for Android - update to 6.3.0
Zoom Rooms Controller for macOS - update to 6.3.0
Zoom Rooms Controller for Windows - update to 6.3.0
Virtual Desktop Infrastructure (VDI) - addressed in versions 6.1.16.25750, 6.2.12.25780
Zoom Rooms Client for Android - update to 6.3.0

• https://www.zoom.com/en/trust/security-bulletin/zsb-25011/

• Buffer underflow in Zoom apps and SDKs