TeamViewer security advisory (AV26-090)

Serial number: AV26-090
Date: February 5, 2026

On February 5, 2026, TeamViewer released a security advisory to address a vulnerability in the following products:

• TeamViewer Full Client (Windows) – versions prior to 15.74.5
• TeamViewer Full Client (macOS) – versions prior to 15.74.5
• TeamViewer Full Client (Linux) – versions prior to 15.74.5
• TeamViewer Host (Windows) – versions prior to 15.74.5
• TeamViewer Host (macOS) – versions prior to 15.74.5
• TeamViewer Host (Linux) – versions prior to 15.74.5

The Cyber Centre encourages users and administrators to review the provided web links and perform the suggested mitigations.

• Access control vulnerability in TeamViewer Full and Host clients - TV-2026-1003
• TeamViewer Trust Center