Improper Preservation of Permissions
An exploitable local privilege escalation vulnerability exists in GOG Galaxy 2.0.46. Due to insufficient folder permissions, an attacker can hijack the %ProgramData%\GOG.com folder structure and change the GalaxyCommunication service executable to a malicious file, resulting in code execution as SYSTEM.
CWE-281 - Improper Preservation of Permissions
The software does not preserve permissions or incorrectly preserves permissions when copying, restoring, or sharing objects, which can cause them to have less restrictive permissions than intended.