# CVE-2020-7352: GOG Galaxy GalaxyClientService Privilege Escalation

> Local attackers can escalate privileges to SYSTEM by exploiting a hardcoded RSA key in the GOG Galaxy client service to execute arbitrary commands.

- **Severity:** High 8.4 (`CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:N`)
- **Exploited in the wild:** Not known
- **Login needed:** Any signed-in user
- **Attackable:** Local or same network only
- **Victim action needed:** Not needed
- **Fix available:** No
- **Published:** 6 Aug 2020
- **Updated:** 16 Sep 2024
- **Also known as:** GHSA-chcw-6743-7jr7

## What is CVE-2020-7352?

CVE-2020-7352 is a high-severity vulnerability in GOG GalaxyClientService, published on 6 Aug 2020. It can only be exploited from the same machine or local network, with no action from the victim.

### Official description

The GalaxyClientService component of GOG Galaxy runs with elevated SYSTEM privileges in a Windows environment. Due to the software shipping with embedded, static RSA private key, an attacker with this key material and local user permissions can effectively send any operating system command to the service for execution in this elevated context. The service listens for such commands on a locally-bound network port, localhost:9978. A Metasploit module has been published which exploits this vulnerability. This issue affects the 2.0.x branch of the software (2.0.12 and earlier) as well as the 1.2.x branch (1.2.64 and earlier). A fix was issued for the 2.0.x branch of the affected software.

Weakness: CWE-798 (Use of Hard-coded Credentials), CWE-264

## Which versions are affected by CVE-2020-7352?

It affects 1 product.


Products: Gog Galaxy.

## How do I fix CVE-2020-7352?

No fix has been published for CVE-2020-7352 yet. Limit exposure of the affected software until one is available.

## Is CVE-2020-7352 being exploited?

It is not confirmed as exploited in the wild, but public exploit code for CVE-2020-7352 exists.

Public exploit code:

- Powershell implemetation of CVE-2020-7352 (github_poc): https://github.com/szerszen199/PS-CVE-2020-7352
- GOG GalaxyClientService Privilege Escalation (metasploit)

## Other vulnerabilities in GOG GalaxyClientService

- [CVE-2018-4048](https://insights.sbomify.com/CVE-2018-4048/): Privilege escalation in GOG Galaxy (critical 9.3)
- [CVE-2018-3974](https://insights.sbomify.com/CVE-2018-3974/): Privilege escalation in GOG Galaxy (critical 9.3)
- [CVE-2018-4049](https://insights.sbomify.com/CVE-2018-4049/): Privilege escalation in GOG Galaxy (critical 9.3)
- [CVE-2022-31262](https://insights.sbomify.com/CVE-2022-31262/): Privilege escalation in n/a (high 7.8)
- [CVE-2021-26807](https://insights.sbomify.com/CVE-2021-26807/): Other in n/a (high 7.8)

## Fix prompt for AI coding agents

```text
Check this codebase for CVE-2020-7352 and fix it if it is affected.

What it is: CVE-2020-7352 is a high-severity vulnerability in GOG GalaxyClientService, published on 6 Aug 2020. It can only be exploited from the same machine or local network, with no action from the victim.
Exploitation: It is not confirmed as exploited in the wild, but public exploit code for CVE-2020-7352 exists.

Affected product: GOG GalaxyClientService. No package-level version data is available, so check the vendor advisory linked from the reference page.

Task:
1. Search the dependency manifests and lockfiles (for example package.json, package-lock.json, requirements.txt, poetry.lock, uv.lock, pom.xml, build.gradle, go.mod, Cargo.lock, Gemfile.lock) and any Dockerfiles for the affected packages, including transitive dependencies.
2. If an affected version is in use, upgrade it to the fixed version for its release line with the project's package manager, so the lockfile is regenerated. Prefer the smallest upgrade that fixes it.
3. If there is no fix, or the upgrade would break the build, do not guess: explain the risk and the safest workaround instead.
4. Run the tests and summarise what changed and why.
5. If nothing in the project is affected, say so and change nothing.

Reference: https://insights.sbomify.com/CVE-2020-7352/ (Markdown: https://insights.sbomify.com/CVE-2020-7352/index.md)
```

## Sources

- CVE record: https://www.cve.org/CVERecord?id=CVE-2020-7352
- NVD: https://nvd.nist.gov/vuln/detail/CVE-2020-7352
- OSV: https://osv.dev/vulnerability/CVE-2020-7352

---
From sbomify Insights: https://insights.sbomify.com/CVE-2020-7352/
Summaries are generated and may contain mistakes; the official description above is the record.