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
Trending — 4 sources updated this weekElevated
7.8EG
EchelonGraph verdictPlan a fixSerious severity, but no confirmed exploitation yet.
  • High severity, but no confirmed exploitation yet
CISA-KEV: Not listedEPSS PROB: 11%CVSS: 7.8Exploit: Elevated riskExposed: 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 PROB
11%
EPSS %ILE
95%
KEV
Not listed

Published

June 16, 2026

Last Modified

July 28, 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 17× in last 7d / 116× 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 186 total refreshes for this CVE.

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

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 ↗

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 28, 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 11% probability of exploitation in the next 30 days, which ranks it in the top 4.6% of all scored CVEs.
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

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