CVE-2026-50544

MEDIUMPre-NVD 6.36.3—
EchelonGraph scoreMEDIUM confidence

This medium-severity CVE scores 6.3 under a secondary CVSS source (NVD's own analysis pending). EPSS exploit probability: 0.1% (1st percentile of EPSS-scored CVEs). GitHub Security Advisory data not yet ingested — confidence will rise once GHSA publishes (typical lag: hours to days for open-source ecosystem CVEs; never for infrastructure-only CVEs).

Triggered by: NVD CVSS baseline
Sources: epss, secondary
6.3EG
EchelonGraph verdictMonitorLow exploitation likelihood right now — keep watching.
  • Lower severity and no public exploit yet
CISA-KEV: Not listedEPSS PROB: 0.1%CVSS: 6.3Exploit: None knownExposed services: Not assessed

No fix is confirmed yet — apply a workaround or compensating control (WAF / firewall / segmentation) and watch for the fix.

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 v3
6.3
EG Score
6.3MEDIUMmedium confidence
EG Risk
28
EG Risk 28/100CISA SSVC

EG Risk is EchelonGraph's 0–100 priority score: it fuses intrinsic severity with real-world exploitation and automatability so you can rank equal-severity CVEs and fix the most dangerous first. Higher = act sooner. Distinct from the 0–10 EG Score (severity).

How it’s computed
Severity63% × 45%
Exploitation0% × 40%
Automatability0% × 15%
CISA SSVC: Track at low or medium mission impact; Track* at high (mission-essential systems).
Action: No fix is confirmed yet. Restrict network exposure of the affected system or apply the vendor's mitigation within your standard update timelines, and watch the vendor's advisory for the fix.
EPSS PROB
0.1%
EPSS %ILE
1st
KEV
Not listed

CISA SSVCTrack at low or medium mission impact; Track* at high (mission-essential systems).

No fix is confirmed yet. Restrict network exposure of the affected system or apply the vendor's mitigation within your standard update timelines, and watch the vendor's advisory for the fix.

Exploitation none (CISA Vulnrichment) · Automatable no (CISA Vulnrichment) · Technical impact total (CISA Vulnrichment). Mission impact is CISA's Mission & Well-being decision point, and only you can judge it: high means the affected system is essential to your organisation's mission, or its compromise could cause irreversible harm to people. CISA's decision table

Published

August 12, 2026

Last Modified

September 9, 2026

Advisory Details (1)

Auto-updated Aug 12, 2026
No fix on record yet. Sources: github.
githubMentions a patch (unverified)

Incorrect Permission Assignment for Critical Resource and Creation of Temporary File in Directory with Insecure Permissions in NortheBridge/luminalshine · Advisory · NortheBridge/luminalshine · GitHub

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

Weakness Classification(2)

MITRE Common Weakness Enumeration — the root-cause categories this CVE belongs to.

Data Freshness Timeline

(refreshed 9× in last 7d / 38× in last 30d)

Each row is a source pipeline that fetched or updated this CVE on that date, with what changed. For example, "NVD update" means NVD published or revised its analysis for this CVE; "MITRE cvelistV5" means we ingested or refreshed it from the CNA feed. Most recent first.

  1. 2026-10-09 20:07 UTCEPSS rescore
  2. 2026-10-08 17:12 UTCEPSS rescore
  3. 2026-10-07 23:48 UTCEPSS rescore
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  5. 2026-10-06 14:04 UTCEG score recompute
  6. 2026-10-05 17:43 UTCEPSS rescore
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  8. 2026-10-03 19:54 UTCEG score recompute
  9. 2026-10-03 14:26 UTCEPSS rescore
  10. 2026-10-02 17:56 UTCEPSS rescore
  11. 2026-10-02 08:07 UTCEG score recompute
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  16. 2026-09-28 09:52 UTCEG score recompute
  17. 2026-09-27 13:48 UTCEPSS rescore
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  19. 2026-09-26 15:59 UTCEPSS rescore
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  21. 2026-09-25 03:38 UTCEG score recompute
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  23. 2026-09-23 17:53 UTCEPSS rescore
  24. 2026-09-23 00:42 UTCEG score recompute
  25. 2026-09-19 00:33 UTCEG score recompute
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  1. 2026-09-18 19:28 UTCEPSS rescore
  2. 2026-09-18 00:31 UTCEG score recompute
  3. 2026-09-17 00:15 UTCEG score recompute
  4. 2026-09-16 14:08 UTCEPSS rescore
  5. 2026-09-16 05:15 UTCEPSS rescore
  6. 2026-09-15 21:56 UTCEG score recompute
  7. 2026-09-13 21:37 UTCEG score recompute
  8. 2026-09-13 16:47 UTCEPSS rescore
  9. 2026-09-12 21:35 UTCEG score recompute
  10. 2026-09-11 21:33 UTCEG score recompute
  11. 2026-09-11 14:53 UTCEPSS rescore
  12. 2026-09-10 21:30 UTCEG score recompute
  13. 2026-09-10 09:35 UTCEPSS rescore
  14. 2026-09-09 05:09 UTCEG score recompute
  15. 2026-09-08 22:01 UTCEPSS rescore
  16. 2026-09-07 01:28 UTCEG score recompute
  17. 2026-09-06 13:47 UTCEPSS rescore
  18. 2026-09-06 01:26 UTCEG score recompute
  19. 2026-09-05 01:25 UTCEG score recompute
  20. 2026-09-04 05:06 UTCEPSS rescore
  21. 2026-09-02 23:24 UTCEG score recompute
  22. 2026-09-01 13:54 UTCEPSS rescore
  23. 2026-08-31 09:50 UTCEG score recompute
  24. 2026-08-30 19:17 UTCEPSS rescore
  25. 2026-08-29 08:25 UTCEG score recompute
  26. 2026-08-28 21:41 UTCEPSS rescore
  27. 2026-08-26 23:40 UTCEG score recompute
  28. 2026-08-26 14:46 UTCEPSS rescore
  29. 2026-08-25 23:38 UTCEG score recompute
  30. 2026-08-25 13:49 UTCEPSS rescore
  31. 2026-08-24 23:37 UTCEG score recompute
  32. 2026-08-23 23:35 UTCEG score recompute
  33. 2026-08-23 00:19 UTCEPSS rescore
  34. 2026-08-22 23:34 UTCEG score recompute
  35. 2026-08-21 23:49 UTCEPSS rescore
  36. 2026-08-20 23:30 UTCEG score recompute
  37. 2026-08-20 22:55 UTCEPSS rescore
  38. 2026-08-19 23:29 UTCEG score recompute
  39. 2026-08-19 17:04 UTCEPSS rescore
  40. 2026-08-18 23:27 UTCEG score recompute
  41. 2026-08-18 13:48 UTCEPSS rescore
  42. 2026-08-17 23:24 UTCEG score recompute
  43. 2026-08-17 13:47 UTCEPSS rescore
  44. 2026-08-16 23:22 UTCEG score recompute
  45. 2026-08-16 02:14 UTCEPSS rescore
  46. 2026-08-15 23:21 UTCEG score recompute
  47. 2026-08-15 01:30 UTCEPSS rescore
  48. 2026-08-14 23:19 UTCEG score recompute
  49. 2026-08-14 22:39 UTCEG score recompute
  50. 2026-08-14 00:24 UTCEG score recompute
  51. 2026-08-13 22:00 UTCEPSS rescore
  52. 2026-08-13 00:22 UTCEG score recompute
  53. 2026-08-12 23:26 UTCEG score recompute
  54. 2026-08-12 23:25 UTCMITRE cvelistV5first tracked

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Frequently asked(5)

What is CVE-2026-50544?
CVE-2026-50544 is a medium vulnerability published on August 12, 2026. 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…
When was CVE-2026-50544 disclosed?
CVE-2026-50544 was first published on August 12, 2026, with the most recent update on September 9, 2026. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.
Is CVE-2026-50544 actively exploited?
CVE-2026-50544 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 0.1% probability of exploitation in the next 30 days (1st percentile of EPSS-scored CVEs).
What is the CVSS score of CVE-2026-50544?
CVE-2026-50544 has a CVSS base score of 6.3 (a secondary CVSS source that NVD displays; NVD's own analysis pending).
How do I remediate CVE-2026-50544?
No fix for CVE-2026-50544 is confirmed yet. Until one is published, restrict network exposure of the affected system or apply the vendor's mitigation — for example, keep it off the internet or limit it to trusted networks — and watch the vendor's advisory for the fix.

Dependency Blast Radius

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