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TI-2019-11612 Aliases CVE-2019-15511GHSA-27xc-49hc-r9xm

An exploitable local privilege escalation vulnerability exists in the GalaxyClientService…

Priority LOW 35CWE-306Published · Updated

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-306.

Summary

An exploitable local privilege escalation vulnerability exists in the GalaxyClientService installed by GOG Galaxy. Due to Improper Access Control, an attacker can send unauthenticated local TCP packets to the service to gain SYSTEM privileges in Windows system where GOG Galaxy software is installed. All GOG Galaxy versions before 1.2.60 and all corresponding versions of GOG Galaxy 2.0 Beta are affected.

Why it matters now

EPSS 0.00749 55th percentileScored 2026-11-07
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:*:*:*:*:*:*:*:*before 1.2.60; 2.0.0 – 2.0.8VulnerableGOG.COM
  • cpe:2.3:a:gog:galaxy:*:*:*:*:*:*:*:* Versions before 1.2.60; 2.0.0 – 2.0.8 Vulnerable ·GOG.COM

Remediation

No fixed version listed by the sources yet.

Timeline

  1. 2026-10-02 Threatist record created from CVE-2019-15511
  2. 2026-10-03 Alias added: GHSA-27xc-49hc-r9xm

References

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-2020-15055 The client (aka GalaxyClientService.exe) in GOG GALAXY through 2.0.41 (as of 12:58 AM… 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