CVE-2020-7352

HIGH

GOG Galaxy < 1.2.64 and 2.0.x <= 2.0.12 - Local Privilege Escalation via GalaxyClientService

Title source: llm
STIX 2.1

Exploitation Summary

EIP tracks 2 public exploits for CVE-2020-7352. PoCs published by szerszen199, including Metasploit module exploits/windows/local/gog_galaxyclientservice_privesc.

AI-analyzed exploit summary This PowerShell script exploits CVE-2020-7352, a vulnerability in GOG Galaxy's GalaxyClientService, by sending a crafted payload to a local TCP port (9978) to achieve remote code execution (RCE). The payload includes a command to add a new user to the system, demonstrating the exploit's functionality.

Description

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.

Exploits (2)

nomisec WORKING POC 2 stars
by szerszen199 · poc
https://github.com/szerszen199/PS-CVE-2020-7352

This PowerShell script exploits CVE-2020-7352, a vulnerability in GOG Galaxy's GalaxyClientService, by sending a crafted payload to a local TCP port (9978) to achieve remote code execution (RCE). The payload includes a command to add a new user to the system, demonstrating the exploit's functionality.

Classification
Working Poc 95%
Attack Type
Rce
Complexity
Moderate
Reliability
Reliable
Target: GOG Galaxy GalaxyClientService
No auth needed
Prerequisites: GOG Galaxy installed · GalaxyClientService running · Local access to the target system
devstral-2 · analyzed Feb 18, 2026 Full analysis →
metasploit WORKING POC EXCELLENT
rubypocwin
https://github.com/rapid7/metasploit-framework/blob/master/modules/exploits/windows/local/gog_galaxyclientservice_privesc.rb

This Metasploit module exploits a privilege escalation vulnerability in GOG GalaxyClientService by sending a crafted payload to the service, which executes arbitrary code with SYSTEM privileges. The exploit leverages a hardcoded HMAC-SHA512 key to sign the payload and communicates with the service over a local TCP socket.

Classification
Working Poc 100%
Attack Type
Lpe
Complexity
Moderate
Reliability
Reliable
Target: GOG Galaxy Client Service (versions prior to 2.0.13)
No auth needed
Prerequisites: Local access to the target system · GOG Galaxy Client Service installed and running
devstral-2 · analyzed Feb 19, 2026 Full analysis →

References (2)

Core 2
Core References
Patch, Third Party Advisory x_refsource_misc
https://github.com/rapid7/metasploit-framework/pull/13444

Scores

CVSS v3 8.4
EPSS 0.0378
EPSS Percentile 88.5%
Attack Vector LOCAL
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:N

Details

CWE
CWE-264 CWE-798
Status published
Products (1)
gog/galaxy 1.2.0 - 1.2.64
Published Aug 06, 2020
Tracked Since Feb 18, 2026