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CVE-2020-11827

24
FAUCET Score

CVE-2020-11827 describes a weak file/service permissions vulnerability in GOG Galaxy 1.2.67's GalaxyClientService.exe. An authenticated, unprivileged attacker can replace the legitimate executable with malicious code, then restart the service to achieve SYSTEM-level privilege escalation. This vulnerability carries a CVSS v3.1 score of 7.8 (High), indicating a local attack vector with low complexity and high impact on confidentiality, integrity, and availability. There is currently no evidence of active exploitation, public exploit code, or significant community discussion surrounding this CVE.

Impacted Technologies

VendorProductVersion(s)CPE
< 1.2.67CPE matchmatch criteria
cpe:2.3:a:gog:galaxy:*:*:*:*:*:*:*:*

CVSS Data

CVSS version used by this source: 3.1

7.8HIGH

CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

Attack Vector
LOCAL
Attack Complexity
LOW
Privileges Required
LOW
User Interaction
NONE
Scope
UNCHANGED
Confidentiality Impact
HIGH
Integrity Impact
HIGH
Availability Impact
HIGH
Exploitability Score
1.8
Impact Score
5.9
CvssVersion
3.1

Exploit Intelligence

EPSS Score
0.34%
Probability of exploitation in next 30 days
EPSS Percentile
26.7%
Percentile rank of EPSS score among Peer Group
As of 2026-07-27
Model: v2026.06.15
This CVE's current EPSS score of 0.0034 is in the 65th percentile among its peer group of 17,070 CVEs.

Social Chatter

The average CVE in this peer group has 0.0 Twitter, 0.1 Reddit, 0.2 Bluesky, 0.1 Mastodon, and 0.2 GitHub mentions.

Media Mentions

No media coverage found for this CVE.

The average CVE in this peer group has 0.3 InfoSec Media, 0.0 Vendor Blog, and 0.0 Security Researcher mentions.

Remediation

Remediation records are not available for this CVE.

References

fatihhcelik.blogspot.com / 2020/04/gog-galaxy-desktop-app-local-privilege.html
Third Party Advisory
gog.com / galaxy
ProductVendor Advisory