CVE-2026-50656

HIGHNVD 7.07.8▲
EchelonGraph scoreMEDIUM confidence

Score 7.8 from GitHub Security Advisory (severity: HIGH) published 2026-06-16. NVD baseline CVSS 7.0; sources differ by 0.8.

Triggered by: GitHub Security Advisory CVSS
Sources: epss, ghsa, nvd
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: 7.0Exploit: 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
7.0
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
96%
KEV
Not listed

Published

June 16, 2026

Last Modified

August 25, 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 7× in last 7d / 56× 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 346 total refreshes for this CVE.

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

Publicly available exploits

(2 references)

Working exploit code is in the public domain (2 GitHub PoCs). 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 ↗
  • GitHub PoCg0thamRabb1t/CVE-2026-50656-rogueplanet-validation
    First seen Jun 10, 2026

    Validation report for the RoguePlanet Microsoft Defender PoC in a controlled Windows 11 lab environment, including build notes, Defender detection results, risk assessment, and mitigation recommendations.

    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 August 25, 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 4.3% of all scored CVEs.
What is the CVSS score of CVE-2026-50656?
CVE-2026-50656 has a CVSS v3 base score of 7.0 (NVD). EchelonGraph synthesises NVD + CISA KEV + FIRST EPSS + GHSA into a combined EG score of 7.8.
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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