TI-2020-05946 Aliases CVE-2020-7352 GHSA-chcw-6743-7jr7

GOG Galaxy GalaxyClientService Privilege Escalation

MEDIUM 45CWE-264Published 2020-08-06 · Updated 2024-09-16

Key facts

Attack vector: Local
Privileges required: Low
User interaction: None
Attack complexity: Low
Impact type: Security bypass
Confidentiality · integrity · availability: High · High · High
Fix status: No fix listed

Attack profile from CVSS 3.1 · NVD. Fix status from CNA. Impact type from CWE-264.

Summary

The GalaxyClientService component of GOG Galaxy runs with elevated SYSTEM privileges in a Windows environment. Due to the software shipping with embedded, static RSA private key, an attacker with this key material and local user permissions can effectively send any operating system command to the service for execution in this elevated context. The service listens for such commands on a locally-bound network port, localhost:9978. A Metasploit module has been published which exploits this vulnerability. This issue affects the 2.0.x branch of the software (2.0.12 and earlier) as well as the 1.2.x branch (1.2.64 and earlier). A fix was issued for the 2.0.x branch of the affected software.

Why it matters now

EPSS 0.03778 90th percentileScored 2026-11-07

Public exploit Yes 1 exploit referenceTagged by NVD

Fix No fix listed No fixed version in the sources yet

SSVC decision points

Not available: CISA has not published SSVC decision points for this record.

Affected products

Vendor	Product	Affected versions	Fixed in	Status	Source
GOG.COM	GOG GalaxyClientService	2.0.12 – 2.0.12; 1.2.64 – 1.2.64	—	No fix listed	CNA

GOG GalaxyClientService VendorGOG.COM Affected 2.0.12 – 2.0.12; 1.2.64 – 1.2.64 Fixed in — No fix listed CNA

CPE configurations NVD · 1

CPE	Versions	Role	Vendor
cpe:2.3:a:gog:galaxy::::::windows::*	1.2.0 – 1.2.64; 2.0.0 – 2.0.12	Vulnerable	GOG.COM

cpe:2.3:a:gog:galaxy:*:*:*:*:*:windows:*:* Versions 1.2.0 – 1.2.64; 2.0.0 – 2.0.12 Vulnerable ·GOG.COM

Remediation

No fixed version listed by the sources yet.

Timeline

2026-10-02 Threatist record created from CVE-2020-7352
2026-10-03 Alias added: GHSA-chcw-6743-7jr7
2026-11-07 EPSS moved to the 90th–95th percentile

References

Exploit 1

https://www.positronsecurity.com/blog/2020-04-28-gog-galaxy-client-local-privilege-escalation/

Patch 1

https://github.com/rapid7/metasploit-framework/pull/13444

TI-2020-12225 An issue was discovered in GOG Galaxy Client 2.0.17. CVSS 3.1HIGH 7.8
TI-2020-12226 An issue was discovered in GOG Galaxy Client 2.0.17. CVSS 3.1HIGH 7.8
TI-2022-13295 An exploitable local privilege escalation vulnerability exists in GOG Galaxy 2.0.46. CVSS 3.1HIGH 7.8
TI-2021-08442 GalaxyClient version 2.0.28.9 loads unsigned DLLs such as zlib1.dll, libgcc_s_dw2-1.dll… CVSS 3.1HIGH 7.8
TI-2020-15055 The client (aka GalaxyClientService.exe) in GOG GALAXY through 2.0.41 (as of 12:58 AM… CVSS 3.1HIGH 7.8
TI-2019-11612 An exploitable local privilege escalation vulnerability exists in the GalaxyClientService… CVSS 3.1HIGH 7.8

See all 14 →

Sources

This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences