Vulnerability in NortheBridge/luminalshine (CVE-2026-50544)
Summary
Vulnerability in NortheBridge/luminalshine (CVE-2026-50544). Successful exploitation can lead to full system takeover. Exploitable via SYSTEM.
Original description
The description as published by the 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.
Source: NIST National Vulnerability Database NVD
Auto-generated summary
Assembled by SecPulse from the source data (CVSS, CWE, affected versions) using templates — no AI involved. Check the original description and references below for exact details.
A vulnerability tracked as CVE-2026-50544 has been found in NortheBridge/luminalshine.
Attackers can target a specific entry point like SYSTEM over the network to misuse the product.
Successful exploitation can lead to full system takeover. CVSS score: 6.3/10.
What to do: apply the vendor's official patched release.
If unsure, ask your IT team or search "NortheBridge/luminalshine CVE-2026-50544" on the vendor's site.
CVE-2026-50544 (NortheBridge/luminalshine) — CWE-379 / CVSS v3 6.3
Attack vector: local
Attack surface: SYSTEM / ProgramData
Plan: 1) Audit SBOM/dependencies, 2) Stage→prod upgrade, 3) Add WAF/proxy monitoring on affected endpoints, 4) Hunt IOCs in logs.
Refs: see the GHSA / vendor advisory / patched release linked on this page.
A vulnerability (CWE-379) exists in NortheBridge/luminalshine. Attackers reach the vulnerable code path via SYSTEM.
Check the vendor advisory for the affected versions of NortheBridge/luminalshine. Attack surface: SYSTEM / ProgramData.
Severity: Medium (CVSS 6.3/10). Successful exploitation can lead to full system takeover.
Update to the patched release per vendor advisory.
Until the patch is applied: disable the affected feature, apply WAF rules, or restrict access via network ACLs.
Search webserver/proxy logs for unusual request patterns matching this CVE's known IOCs. Run grep -r 'NortheBridge/luminalshine' . against your dependency files (package-lock.json, requirements.txt, go.sum) to find affected services.
Response actions
Concrete steps and command examples for SOC/SRE teams to execute in order
-
1Identify exposure identify
grep -r 'NortheBridge/luminalshine' . | grep -v node_modulesリポジトリと本番環境の依存ファイル (package-lock.json / requirements.txt / go.sum / Gemfile.lock 等) で
NortheBridge/luminalshineを grep し、稼働しているサービス・バージョンを把握する。 -
2Post-deployment verification verify
Confirm patched version is live in productionパッチ適用後、ステージングで PoC または同等の悪用パターンを再現して脆弱性が閉じたことを確認。本番ではアクセスログ・WAF でアラート再発が無いか継続監視。