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TI-2020-15055 Aliases CVE-2020-24574GHSA-p249-vr5g-ff3h

The client (aka GalaxyClientService.exe) in GOG GALAXY through 2.0.41 (as of 12:58 AM…

Priority LOW 35CWE-798Published · Updated

Key facts

Attack vector
Local
Privileges required
None
User interaction
Required
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-798.

Summary

The client (aka GalaxyClientService.exe) in GOG GALAXY through 2.0.41 (as of 12:58 AM Eastern, 9/26/21) allows local privilege escalation from any authenticated user to SYSTEM by instructing the Windows service to execute arbitrary commands. This occurs because the attacker can inject a DLL into GalaxyClient.exe, defeating the TCP-based "trusted client" protection mechanism.

Why it matters now

EPSS 0.00623 50th percentileScored 2026-11-07
Public exploit Yes 2 exploit referencesTagged 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

VendorProductAffected versionsFixed inStatusSource
——all versions—No fix listedCNA
  • — Vendor— Affected all versions Fixed in — No fix listed CNA

CPE configurations NVD · 1

CPEVersionsRoleVendor
cpe:2.3:a:gog:galaxy:*:*:*:*:*:windows:*:*2.0.13 – 2.0.41VulnerableGOG.COM
  • cpe:2.3:a:gog:galaxy:*:*:*:*:*:windows:*:* Versions 2.0.13 – 2.0.41 Vulnerable ·GOG.COM

Remediation

No fixed version listed by the sources yet.

Timeline

  1. 2026-10-02 Threatist record created from CVE-2020-24574
  2. 2026-10-03 Alias added: GHSA-p249-vr5g-ff3h
  3. 2026-11-04 EPSS moved to the 50th–90th percentile

References

Exploit 2

Advisory 2

  • TI-2020-05946 GOG Galaxy GalaxyClientService Privilege Escalation CVSS 3.1HIGH 8.8
  • 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-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