VulnerabilityDeferred

CVE-2026-50544

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.

MEDIUM 6.3EPSS 0.09%

Does this matter?

Lower severity and a low EPSS score (0.09%). Track it; it rarely justifies an emergency change on its own.

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`.

CVSS 3.1: 6.3 MEDIUMCVSS:3.1/AV:L/AC:H/PR:H/UI:R/S:U/C:H/I:H/A:H
EPSS: 0.09% probability · 0th percentile
CISA KEV: Not listed
Weakness: CWE-379, CWE-732
Source: security-advisories@github.com

References

https://github.com/NortheBridge/luminalshine/security/advisories/GHSA-52q6-5x97-2747

Source: NVD record, EPSS from FIRST.org, KEV from CISA. Refreshed daily.