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 6× in last 7d / 40× 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 348 total refreshes for this CVE.

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

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 ↗

Related CVEs(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 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 4.2% 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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