CVE-2021-34803: 
TeamViewer Remote vulnerability analysis and mitigation

CVE-2021-34803 is a security vulnerability affecting TeamViewer versions before 14.7.48644 on Windows systems. The vulnerability was discovered and disclosed on June 16, 2021, and involves the loading of untrusted DLLs in certain situations. This security issue affects multiple versions of TeamViewer for Windows, including versions 9.x through 14.x (MITRE CVE).

The vulnerability stems from TeamViewer's handling of DLL loading operations on Windows systems. Specifically, the application could load untrusted DLLs from the application directory into the service process, potentially compromising system security. The issue affects multiple versions of TeamViewer, including versions from 9.0.259145 up to 14.7.48644 (TeamViewer Release Notes).

When exploited, this vulnerability could potentially allow attackers to execute malicious code through DLL loading, which could lead to unauthorized access or system compromise. The vulnerability affects the service process of TeamViewer, potentially impacting system security (NVD Database).

TeamViewer has addressed this vulnerability by implementing security improvements for communication between infrastructure and client components. The fix prevents Microsoft Windows system DLLs from loading untrusted DLLs from the application directory into the service process. Users should upgrade to TeamViewer version 14.7.48644 or later to mitigate this vulnerability (TeamViewer Release Notes).