HOMEVULNERABILITIESCVE-2020-11827
HIGH

CVE-2020-11827

CWE-732Published: July 14, 2020· Updated: Jun 17, 2026

7.8
CVSS v3.1

Official Description

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.

NVD Source

Technical Analysis

CVE-2020-11827 requires local access, meaning attackers must already have a foothold on the target system.

Exploitation requires low privileges, which limits the exposure to scenarios where an attacker has already gained initial access.

A successful exploit results in complete confidentiality breach (data exposure), full integrity compromise (data manipulation), availability disruption (denial of service), with a CVSS base score of 7.8.

CVSS v3.1 Vector Breakdown

Exploitability
Attack VectorLocal
Attack ComplexityLow
Privileges Req.Low
User InteractionNone
ScopeUnchanged
Impact
ConfidentialityHigh
IntegrityHigh
AvailabilityHigh
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

Affected Vendors & Products

gog1 product(s)
galaxy
Source: NVD CPE · 1 total CPE entries

Exploit & PoC Resources

NO KNOWN EXPLOITNo public exploit confirmed at this time
Exploit-DB
Offensive Security exploit database
GitHub PoC Search
Community PoC repositories
Rapid7 / Metasploit
Metasploit module search
PacketStorm
Security advisories & exploits
NVD Detail
Official NIST entry
MITRE CVE
CVE Program entry
External links open in a new tab. Always verify in a controlled environment before use.

Official Patches & Advisories

ADVISORYhttps://fatihhcelik.blogspot.com/2020/04/gog-galaxy-desktop-app-local-privilege.html
ADVISORYhttps://www.gog.com/galaxy
ADVISORYhttps://fatihhcelik.blogspot.com/2020/04/gog-galaxy-desktop-app-local-privilege.html
ADVISORYhttps://www.gog.com/galaxy

All References (4)

→
https://fatihhcelik.blogspot.com/2020/04/gog-galaxy-desktop-app-local-privilege.htmlThird Party Advisory
→
https://www.gog.com/galaxyProduct · Vendor Advisory
→
https://fatihhcelik.blogspot.com/2020/04/gog-galaxy-desktop-app-local-privilege.htmlThird Party Advisory
→
https://www.gog.com/galaxyProduct · Vendor Advisory

Quick Facts

CVE IDCVE-2020-11827
CVSS Score7.8 / 10
SeverityHIGH
WeaknessCWE-732
CISA KEVNo
Affected1 vendor(s)
PublishedJul 14, 2020

Related CVEs (CWE-732)

CVE-2014-125121
10.0
CVE-2026-9508
10.0
CVE-2025-12004
10.0
CVE-2024-5618
9.9
CVE-2021-33509
9.9
CVE-2022-28802
9.9

Recommended Actions

  • →Apply vendor patches immediately
  • →Monitor CVE-2020-11827 in threat intel feeds
  • →Review IDS/IPS signatures for exploitation attempts
Data sourced from NVD (NIST), CISA KEV, and EPSS (FIRST). Analysis generated by CTIWATCH.COM. CVE data is provided under the NVD usage policy.
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