CVE-2026-50544 Privilege escalation in luminalshine
Local attackers can escalate privileges if insecure permissions are applied to the configuration file, allowing modification of critical resources.
- Exploited in the wild
- Not known
- Login needed
- An administrator
- Attackable
- Local or same network only
- Victim action needed
- A user has to click or open something
- Fix
- None listed
What is CVE-2026-50544?
CVE-2026-50544 is a medium-severity vulnerability in NortheBridge luminalshine, published on 12 Aug 2026. It can only be exploited from the same machine or local network, and only if a user opens a file or follows a link.
Official description
NortheBridge/luminalshine is a Sunshine-compatible game stream host for Moonlight. Prior to version 26.05.0-rc4, a latent gap exists on a default install, the file at `src/platform/windows/misc.cpp` lives at `C:\ProgramData\LuminalShine\config\apps.json` and is created by the `SYSTEM` service. Under Windows' default `C:\ProgramData` inheritance, that gives `BUILTIN\Users` only Read+Execute — not writable — so the canonical EoP doesn't actually trigger on a vanilla install. Version 26.05.0-rc4 contains a patch for the issue. As a workaround, use default condition DACLs for `ProgramData`.
Which versions are affected by CVE-2026-50544?
How do I fix CVE-2026-50544?
No fix has been published for CVE-2026-50544 yet. Limit exposure of the affected software until one is available.
Is CVE-2026-50544 being exploited?
There is no known exploitation of CVE-2026-50544 in the wild and no public exploit code.
Sources
Also known as GHSA-52q6-5x97-2747.