Vulnerability-Lookup

CVE-2026-50656 (GCVE-0-2026-50656)

Vulnerability from cvelistv5 – Published: 2026-06-16 18:01 – Updated: 2026-06-17 03:56

Title

Microsoft Defender Elevation of Privilege Vulnerability

Summary

Microsoft is aware of an elevation of privilege in the Microsoft Malware Protection Engine in Microsoft Defender publicly referred to as "RoguePlanet ". We are working to provide a high quality security update that addresses this vulnerability. We will provide information in this CVE when the update is available.

Severity

7.8 (High)


                        
                          CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H/E:F/RL:U/RC:C

SSVC

Exploitation: poc Automatable: no Technical Impact: total

CISA Coordinator (v2.0.3)

CWE

CWE-59 - Improper Link Resolution Before File Access ('Link Following')

Assigner

microsoft

References

2 references

URL	Tags
https://msrc.microsoft.com/update-guide/vulnerabi…	vendor-advisorypatch
https://github.com/MSNightmare/RoguePlanet	exploit

Impacted products

1 product

Vendor	Product	Version
Microsoft	Microsoft Malware Protection Engine	Affected: -

Date Public

2026-06-16 14:00

Show details on NVD website

JSON

To clipboard

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FKIE_CVE-2026-50656

Vulnerability from fkie_nvd - Published: 2026-06-16 19:16 - Updated: 2026-06-16 20:42

Severity

7.8 (High) - CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

Summary

References

	URL	Tags
	secure@microsoft.com	https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-50656
	134c704f-9b21-4f2e-91b3-4a467353bcc0	https://github.com/MSNightmare/RoguePlanet

Impacted products

	Vendor	Product	Version

JSON

To clipboard

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  "descriptions": [
    {
      "lang": "en",
      "value": "Microsoft is aware of an elevation of privilege in the Microsoft Malware Protection Engine in Microsoft Defender publicly referred to as \u0026quot;RoguePlanet \u0026quot;. We are working to provide a high quality security update that addresses this vulnerability. We will provide information in this CVE when the update is available."
    }
  ],
  "id": "CVE-2026-50656",
  "lastModified": "2026-06-16T20:42:25.013",
  "metrics": {
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}

GHSA-HGX9-224C-3P2X

Vulnerability from github – Published: 2026-06-16 21:31 – Updated: 2026-06-16 21:31

Details

Severity

7.8 (High)


                  
                    CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

Show details on source website

JSON

To clipboard

{
  "affected": [],
  "aliases": [
    "CVE-2026-50656"
  ],
  "database_specific": {
    "cwe_ids": [
      "CWE-59"
    ],
    "github_reviewed": false,
    "github_reviewed_at": null,
    "nvd_published_at": "2026-06-16T19:16:59Z",
    "severity": "HIGH"
  },
  "details": "Microsoft is aware of an elevation of privilege in the Microsoft Malware Protection Engine in Microsoft Defender publicly referred to as \u0026quot;RoguePlanet \u0026quot;. We are working to provide a high quality security update that addresses this vulnerability. We will provide information in this CVE when the update is available.",
  "id": "GHSA-hgx9-224c-3p2x",
  "modified": "2026-06-16T21:31:57Z",
  "published": "2026-06-16T21:31:57Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-50656"
    },
    {
      "type": "WEB",
      "url": "https://github.com/MSNightmare/RoguePlanet"
    },
    {
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    }
  ],
  "schema_version": "1.4.0",
  "severity": [
    {
      "score": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H",
      "type": "CVSS_V3"
    }
  ]
}

MSRC_CVE-2026-50656

Vulnerability from csaf_microsoft - Published: 2026-06-09 07:00 - Updated: 2026-06-16 07:00

Summary

Microsoft Defender Elevation of Privilege Vulnerability

Severity

Important

Notes

Additional Resources: To determine the support lifecycle for your software, see the Microsoft Support Lifecycle: https://support.microsoft.com/lifecycle

Disclaimer: The information provided in the Microsoft Knowledge Base is provided \"as is\" without warranty of any kind. Microsoft disclaims all warranties, either express or implied, including the warranties of merchantability and fitness for a particular purpose. In no event shall Microsoft Corporation or its suppliers be liable for any damages whatsoever including direct, indirect, incidental, consequential, loss of business profits or special damages, even if Microsoft Corporation or its suppliers have been advised of the possibility of such damages. Some states do not allow the exclusion or limitation of liability for consequential or incidental damages so the foregoing limitation may not apply.

Customer Action: Required. The vulnerability documented by this CVE requires customer action to resolve.

CVE-2026-50656

7.8 (High)


                        
                          CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H/E:F/RL:U/RC:C

CWE-59 - Improper Link Resolution Before File Access ('Link Following')

Affected products

Fixed 1 product

Product	Identifier	Version	Remediation
Unresolved product id: 11902		—

Known affected 1 product

Product	Identifier	Version	Remediation
Unresolved product id: 1		—

Threats

Impact Elevation of Privilege

Exploit Status Publicly Disclosed:Yes;Exploited:No;Latest Software Release:Exploitation More Likely

References

7 references

URL	Category
https://msrc.microsoft.com/update-guide/vulnerabi…	self
https://msrc.microsoft.com/csaf/advisories/2026/m…	self
https://www.microsoft.com/en-us/msrc/exploitabili…	external
https://support.microsoft.com/lifecycle	external
https://www.first.org/cvss	external
https://msrc.microsoft.com/update-guide/vulnerabi…	self
https://msrc.microsoft.com/csaf/advisories/2026/m…	self

JSON

To clipboard

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      "text": "Important"
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        "url": "https://www.first.org/tlp/"
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        "text": "To determine the support lifecycle for your software, see the Microsoft Support Lifecycle: https://support.microsoft.com/lifecycle",
        "title": "Additional Resources"
      },
      {
        "category": "legal_disclaimer",
        "text": "The information provided in the Microsoft Knowledge Base is provided \\\"as is\\\" without warranty of any kind. Microsoft disclaims all warranties, either express or implied, including the warranties of merchantability and fitness for a particular purpose. In no event shall Microsoft Corporation or its suppliers be liable for any damages whatsoever including direct, indirect, incidental, consequential, loss of business profits or special damages, even if Microsoft Corporation or its suppliers have been advised of the possibility of such damages. Some states do not allow the exclusion or limitation of liability for consequential or incidental damages so the foregoing limitation may not apply.",
        "title": "Disclaimer"
      },
      {
        "category": "general",
        "text": "Required. The vulnerability documented by this CVE requires customer action to resolve.",
        "title": "Customer Action"
      }
    ],
    "publisher": {
      "category": "vendor",
      "contact_details": "secure@microsoft.com",
      "name": "Microsoft Security Response Center",
      "namespace": "https://msrc.microsoft.com"
    },
    "references": [
      {
        "category": "self",
        "summary": "CVE-2026-50656 Microsoft Defender Elevation of Privilege Vulnerability - HTML",
        "url": "https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-50656"
      },
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        "category": "self",
        "summary": "CVE-2026-50656 Microsoft Defender Elevation of Privilege Vulnerability - CSAF",
        "url": "https://msrc.microsoft.com/csaf/advisories/2026/msrc_cve-2026-50656.json"
      },
      {
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        "summary": "Microsoft Exploitability Index",
        "url": "https://www.microsoft.com/en-us/msrc/exploitability-index?rtc=1"
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        "category": "external",
        "summary": "Microsoft Support Lifecycle",
        "url": "https://support.microsoft.com/lifecycle"
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        "summary": "Common Vulnerability Scoring System",
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          "legacy_version": "1",
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        "name": "Improper Link Resolution Before File Access (\u0027Link Following\u0027)"
      },
      "notes": [
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          "category": "general",
          "text": "Microsoft",
          "title": "Assigning CNA"
        }
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          "category": "self",
          "summary": "CVE-2026-50656 Microsoft Defender Elevation of Privilege Vulnerability - HTML",
          "url": "https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-50656"
        },
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          "url": "https://msrc.microsoft.com/csaf/advisories/2026/msrc_cve-2026-50656.json"
        }
      ],
      "scores": [
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            "attackComplexity": "LOW",
            "attackVector": "LOCAL",
            "availabilityImpact": "HIGH",
            "baseScore": 7.8,
            "baseSeverity": "HIGH",
            "confidentialityImpact": "HIGH",
            "environmentalsScore": 0.0,
            "exploitCodeMaturity": "FUNCTIONAL",
            "integrityImpact": "HIGH",
            "privilegesRequired": "LOW",
            "remediationLevel": "UNAVAILABLE",
            "reportConfidence": "CONFIRMED",
            "scope": "UNCHANGED",
            "temporalScore": 7.6,
            "userInteraction": "NONE",
            "vectorString": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H/E:F/RL:U/RC:C",
            "version": "3.1"
          },
          "products": [
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        }
      ],
      "threats": [
        {
          "category": "impact",
          "details": "Elevation of Privilege"
        },
        {
          "category": "exploit_status",
          "details": "Publicly Disclosed:Yes;Exploited:No;Latest Software Release:Exploitation More Likely"
        }
      ],
      "title": "Microsoft Defender Elevation of Privilege Vulnerability"
    }
  ]
}

Sightings

Author	Source	Type	Date	Other

Nomenclature

Seen: The vulnerability was mentioned, discussed, or observed by the user.
Confirmed: The vulnerability has been validated from an analyst's perspective.
Published Proof of Concept: A public proof of concept is available for this vulnerability.
Exploited: The vulnerability was observed as exploited by the user who reported the sighting.
Patched: The vulnerability was observed as successfully patched by the user who reported the sighting.
Not exploited: The vulnerability was not observed as exploited by the user who reported the sighting.
Not confirmed: The user expressed doubt about the validity of the vulnerability.
Not patched: The vulnerability was not observed as successfully patched by the user who reported the sighting.

Detection rules are retrieved from Rulezet.

Action not permitted

CVE-2026-50656 (GCVE-0-2026-50656)

FKIE_CVE-2026-50656

GHSA-HGX9-224C-3P2X

MSRC_CVE-2026-50656

Tags

Sightings

Nomenclature