CVE-2020-11827: Gog Galaxy

High severity, CVSS 7.8. EPSS: 0.3% chance of exploitation in the next 30 days.

In GOG Galaxy 1.2.67, there is a service that is vulnerable to weak file/service permissions: GalaxyClientService.exe. An attacker can put malicious code in a Trojan horse GalaxyClientService.exe. After that, the attacker can re-start this service as an unprivileged user to escalate his/her privileges and run commands on the machine with SYSTEM rights.

Affected products

• Gog Galaxy: before 1.2.67 (fixed in 1.2.67)

Published 2020-07-14. Last modified 2026-06-17.