Unbootable hosts via redirected privileged log writes
Published Apr 30, 2024 · Updated Mar 28, 2025
Arbitrary file overwrite in GOG GALAXY 2.0.67.2 through 2.0.71.2 allows local users to render Windows hosts unbootable. GalaxyClientService.exe runs as SYSTEM and writes logs into a user-writable directory, letting NTFS junction and RPC symbolic-link redirection corrupt protected system files. Exploitation requires a low-privileged local foothold; attackers cannot control the written content, but overwriting a boot-critical driver causes permanent startup failure.
Summary
What happened
Arbitrary file overwrite in GOG GALAXY 2.0.67.2 through 2.0.71.2 allows local users to render Windows hosts unbootable. GalaxyClientService.exe runs as SYSTEM and writes logs into a user-writable directory, letting NTFS junction and RPC symbolic-link redirection corrupt protected system files. Exploitation requires a low-privileged local foothold; attackers cannot control the written content, but overwriting a boot-critical driver causes permanent startup failure.
The record
- CVE
- CVE-2023-50915
- Published
- Apr 30, 2024
- Updated
- Mar 28, 2025
- Vendor
- GOG
- Product
- GOG GALAXY
- Classifications
- CWE-288, T1485
- Attack vector
- local
- Privileges
- authenticated
Timeline
How it unfolded
- Apr 30, 2024CVE publishedPublication date reported by the CVE source.
- Mar 28, 2025Record updatedLatest update available in the CVE record.
Exploitability
Present is not the same as exploitable
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Is a vulnerable build present?
Compare these published version ranges with your installed build and any vendor patches.
- Affected versionversion=2.0.67.2 <=2.071.2
What conditions does exploitation require?
What is affected?
Published CVSS scores
CVSS describes severity. EPSS estimates exploitation probability.
Attacks
What attackers are doing with it
Daily unique IPs observed by Shadowserver honeypots for known exploited vulnerabilities (KEVs). Missing observations do not establish an absence of attacks.
Weakness, pattern, technique
Public exploit references
- GOG_Galaxy_Arbitrary_File_Overwrite_PoC.ps1proof of concept · demonstrated
Labels summarize the accepted research assessment. They do not indicate a test against your environment.
Technologies
Your stack
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Your stack
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