Improper Access Control in TeamViewer Client on Multiple Platforms

CVE-2026-92370

What is CVE-2026-92370?

CVE-2026-92370 is a vulnerability found in the TeamViewer Full Client and Host applications across multiple platforms, including Windows, Linux, and macOS. TeamViewer is a widely used remote access and support software that allows users to connect to and control computers remotely. This particular vulnerability relates to improper access control mechanisms, which allow an authenticated remote attacker to bypass user-configured permission settings during a session. By manipulating these access controls, an attacker could perform actions that have been explicitly denied by the victim’s configuration, opening the door to unauthorized activities. In the worst-case scenario, this vulnerability could lead to remote code execution, where an attacker gains the ability to execute arbitrary code on the target system.

Potential Impact of CVE-2026-92370

1. Unauthorized Actions: The ability for an attacker to bypass configured permissions means that they can perform actions that should be restricted. This compromises user trust and the integrity of the remote sessions, making it easier for attackers to exploit other vulnerabilities or access sensitive information.

2. Exposure to Remote Code Execution: This vulnerability poses a critical risk of remote code execution on affected systems. If attackers can execute arbitrary code, they may install malware, steal data, or disrupt services, significantly impacting organizational operations.

3. Potential for Data Breach: With unauthorized access and potential control over systems, there is an increased risk of data breaches. Sensitive information, including personal data and proprietary business information, can be compromised, leading to legal ramifications and financial losses for affected organizations.

References