CVE-2026-50656

HIGHPre-NVD 7.87.8—
EchelonGraph scoreMEDIUM confidence

Score 7.8 from GitHub Security Advisory (severity: HIGH) published 2026-06-16. the CNA's CVSS baseline 7.8; sources differ by 0.0.

Triggered by: GitHub Security Advisory CVSS
Sources: cna:microsoft, epss, ghsa
Elevated
7.8
EchelonGraph verdictPlan a fixSerious severity, but no confirmed exploitation yet.
  • High severity, but no confirmed exploitation yet
CISA-KEV: Not listedEPSS: 3%CVSS: 7.8Exploit: NoneExposed: 0

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

Microsoft is aware of an elevation of privilege in the Microsoft Malware Protection Engine in Microsoft Defender publicly referred to as "RoguePlanet ".

CVSS v3
7.8
EG Score
7.8(medium)
EG Risk
51(Track*)
EG Risk 51/100SSVC: Track*

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
Severity78% × 45%
Exploitation40% × 40%
Automatability0% × 15%
Action: Watch closely — could escalate to Attend.
EPSS
87.6%
KEV
Not listed

Published

June 16, 2026

Last Modified

July 15, 2026

Advisory Details (2)

Auto-updated Jun 16, 2026
Patch available. Sources: microsoft.
generic

GitHub - MSNightmare/RoguePlanet: RoguePlanet Windows Defender Vulnerability · GitHub

https://github.com/MSNightmare/RoguePlanet
microsoft Patch Available

Security Update Guide - Microsoft Security Response Center

Security Update Guide - Microsoft Security Response Center. Patch available via Microsoft Security Update

https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-50656

Vendor Advisories for CVE-2026-50656(2)

These vendors published their own advisory mentioning this CVE — often with vendor-specific remediation steps + affected product lists not in NVD.

Weakness Classification(1)

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

Data Freshness Timeline

(refreshed 9× in last 7d / 128× 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.

Showing the most recent 100 of 172 total refreshes for this CVE.

  1. 2026-07-23 14:18 UTCEPSS rescore
  2. 2026-07-23 03:18 UTCEG score recompute
  3. 2026-07-22 14:08 UTCEPSS rescore
  4. 2026-07-21 15:25 UTCEPSS rescore
  5. 2026-07-20 17:08 UTCEPSS rescore
  6. 2026-07-19 14:31 UTCEPSS rescore
  7. 2026-07-19 14:31 UTCEPSS rescore
  8. 2026-07-19 02:29 UTCEPSS rescore
  9. 2026-07-18 10:04 UTCEPSS rescore
  10. 2026-07-16 22:39 UTCVendor advisory
  11. 2026-07-16 22:39 UTCGHSA enrichment
  12. 2026-07-16 17:03 UTCEPSS rescore
  13. 2026-07-16 07:58 UTCVendor advisory
  14. 2026-07-16 07:58 UTCGHSA enrichment
  15. 2026-07-15 20:34 UTCMITRE cvelistV5CVSS v3 → 7.8
  16. 2026-07-15 19:40 UTCVendor advisory
  17. 2026-07-15 19:40 UTCGHSA enrichment
  18. 2026-07-15 16:57 UTCEPSS rescore
  19. 2026-07-15 16:57 UTCEPSS rescore
  20. 2026-07-15 07:27 UTCVendor advisory
  21. 2026-07-15 07:27 UTCGHSA enrichment
  22. 2026-07-15 02:00 UTCEPSS rescore
  23. 2026-07-15 02:00 UTCEPSS rescore
  24. 2026-07-14 19:52 UTCVendor advisory
  25. 2026-07-14 19:52 UTCGHSA enrichment
Show 75 more
  1. 2026-07-14 07:10 UTCVendor advisory
  2. 2026-07-14 07:10 UTCGHSA enrichment
  3. 2026-07-13 22:31 UTCEPSS rescore
  4. 2026-07-13 19:23 UTCGHSA enrichment
  5. 2026-07-13 07:47 UTCGHSA enrichment
  6. 2026-07-12 19:11 UTCVendor advisory
  7. 2026-07-12 19:11 UTCGHSA enrichment
  8. 2026-07-12 07:35 UTCVendor advisory
  9. 2026-07-12 07:35 UTCGHSA enrichment
  10. 2026-07-12 05:46 UTCEPSS rescore
  11. 2026-07-11 19:59 UTCVendor advisory
  12. 2026-07-11 19:59 UTCGHSA enrichment
  13. 2026-07-11 08:27 UTCEPSS rescore
  14. 2026-07-11 08:27 UTCEPSS rescore
  15. 2026-07-11 08:24 UTCVendor advisory
  16. 2026-07-11 08:24 UTCGHSA enrichment
  17. 2026-07-10 20:49 UTCVendor advisory
  18. 2026-07-10 20:49 UTCGHSA enrichment
  19. 2026-07-10 09:14 UTCVendor advisory
  20. 2026-07-10 09:14 UTCGHSA enrichment
  21. 2026-07-09 21:39 UTCVendor advisory
  22. 2026-07-09 21:39 UTCGHSA enrichment
  23. 2026-07-09 19:10 UTCEPSS rescore
  24. 2026-07-09 19:10 UTCEPSS rescore
  25. 2026-07-09 10:04 UTCVendor advisory
  26. 2026-07-09 10:04 UTCGHSA enrichment
  27. 2026-07-09 00:54 UTCNVD updateCVSS v3 → 7
  28. 2026-07-08 22:28 UTCVendor advisory
  29. 2026-07-08 22:28 UTCGHSA enrichment
  30. 2026-07-08 15:16 UTCEPSS rescore
  31. 2026-07-08 15:16 UTCEPSS rescore
  32. 2026-07-08 10:53 UTCVendor advisory
  33. 2026-07-08 10:53 UTCGHSA enrichment
  34. 2026-07-07 23:19 UTCVendor advisory
  35. 2026-07-07 23:19 UTCGHSA enrichment
  36. 2026-07-07 13:46 UTCEPSS rescore
  37. 2026-07-07 13:46 UTCEPSS rescore
  38. 2026-07-07 11:42 UTCVendor advisory
  39. 2026-07-07 11:42 UTCGHSA enrichment
  40. 2026-07-06 23:07 UTCVendor advisory
  41. 2026-07-06 23:07 UTCGHSA enrichment
  42. 2026-07-06 16:27 UTCEPSS rescore
  43. 2026-07-06 02:23 UTCEPSS rescore
  44. 2026-07-05 23:43 UTCVendor advisory
  45. 2026-07-05 23:43 UTCGHSA enrichment
  46. 2026-07-05 12:08 UTCVendor advisory
  47. 2026-07-05 12:08 UTCGHSA enrichment
  48. 2026-07-05 02:30 UTCEPSS rescore
  49. 2026-07-05 00:33 UTCVendor advisory
  50. 2026-07-05 00:33 UTCGHSA enrichment
  51. 2026-07-04 12:58 UTCVendor advisory
  52. 2026-07-04 12:57 UTCGHSA enrichment
  53. 2026-07-04 06:31 UTCEPSS rescore
  54. 2026-07-04 01:22 UTCVendor advisory
  55. 2026-07-04 01:22 UTCGHSA enrichment
  56. 2026-07-03 13:47 UTCVendor advisory
  57. 2026-07-03 13:47 UTCGHSA enrichment
  58. 2026-07-02 22:51 UTCVendor advisory
  59. 2026-07-02 22:51 UTCGHSA enrichment
  60. 2026-07-02 11:15 UTCVendor advisory
  61. 2026-07-02 11:14 UTCGHSA enrichment
  62. 2026-07-01 23:05 UTCVendor advisory
  63. 2026-07-01 23:05 UTCGHSA enrichment
  64. 2026-07-01 15:07 UTCEPSS rescore
  65. 2026-07-01 11:30 UTCVendor advisory
  66. 2026-07-01 11:30 UTCGHSA enrichment
  67. 2026-06-30 23:53 UTCVendor advisory
  68. 2026-06-30 23:53 UTCGHSA enrichment
  69. 2026-06-30 23:22 UTCEPSS rescore
  70. 2026-06-30 12:10 UTCVendor advisory
  71. 2026-06-30 12:10 UTCGHSA enrichment
  72. 2026-06-29 23:05 UTCVendor advisory
  73. 2026-06-29 23:05 UTCGHSA enrichment
  74. 2026-06-29 14:06 UTCEPSS rescore
  75. 2026-06-29 14:06 UTCEPSS rescore

Publicly available exploits

(1 reference)

Working exploit code is in the public domain (1 GitHub PoC). Defenders should treat patch urgency accordingly — public PoCs typically lead to mass-exploitation within 24-72 hours.

  • GitHub PoC0xBlackash/CVE-2026-50656
    First seen Jun 18, 2026

    CVE-2026-50656

    Open source ↗

Related CVEs(same vendor + same CWE)

Frequently asked(5)

What is CVE-2026-50656?
CVE-2026-50656 is a high vulnerability published on June 16, 2026. Microsoft is aware of an elevation of privilege in the Microsoft Malware Protection Engine in Microsoft Defender publicly referred to as "RoguePlanet ".
When was CVE-2026-50656 disclosed?
CVE-2026-50656 was first published in the National Vulnerability Database on June 16, 2026, with the most recent update on July 15, 2026. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.
Is CVE-2026-50656 actively exploited?
CVE-2026-50656 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 87.6% percentile likelihood of exploitation in the next 30 days — higher percentiles indicate greater predicted risk.
What is the CVSS score of CVE-2026-50656?
CVE-2026-50656 has a CVSS v4.0 base score of 7.8 (CNA self-assessment; NVD's own analysis pending).
How do I remediate CVE-2026-50656?
Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2026-50656, EchelonGraph cross-links them in the Vendor Advisories panel below — those typically contain the canonical remediation steps, fixed version numbers, and any vendor-specific mitigations.

Dependency Blast Radius

Explore the affected products and dependency analysis for CVE-2026-50656

Explore →

Is Your Infrastructure Affected by CVE-2026-50656?

EchelonGraph automatically scans your cloud infrastructure and maps CVE exposure using blast radius analysis.

Start Free Scan →Browse All CVEs