CVE-2026-50544
MediumCVSS 6.3Exploitation Probability (EPSS)
Low risk0th percentile - higher than 0% of all known CVEs
Summary
In NortheBridge/luminalshine, a Sunshine-compatible game stream host for Moonlight, prior to version 26.05.0-rc4, a latent gap exists on a default install, but under certain conditions may lead to privilege escalation. Version 26.05.0-rc4 contains a patch.
Risk Assessment
Under certain Windows configurations, the vulnerability may allow privilege escalation, potentially leading to unauthorized system access.
Recommendation
Update to version 26.05.0-rc4 or later and review default DACLs for the ProgramData directory.
Original NVD description (English source)
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`.