CVE-2026-50656

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 HIGH

7.8^/10

CVSS v3 : HIGH

Vector :

Exploitability : 1.8 / Impact : 5.9

Attack Vector LOCAL

Attack Complexity LOW

Privileges Required LOW

User Interaction NONE

Confidentiality Impact HIGH

Integrity Impact HIGH

Availability Impact HIGH

Scope UNCHANGED

References

Link	Resource
https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-50656	Vendor Advisory
https://github.com/MSNightmare/ShieldBreak

Configurations

Configuration 1 (hide)

cpe:2.3:a:microsoft:malware_protection_engine:-:*:*:*:*:*:*:*

History

25 Oct 2026, 23:10

Type	Values Removed	Values Added
Summary		(es) Microsoft tiene conocimiento de una elevación de privilegios en el Motor de Protección de Malware de Microsoft Defensor, conocida públicamente como ’RoguePlanet’. Estamos trabajando para proporcionar una actualización de seguridad de alta calidad que aborda esta vulnerabilidad. Proporcionaremos información en este CVE cuando la actualización esté disponible.

Information

Published : 2026-06-16 19:16

Updated : 2026-10-25 23:10

NVD link : CVE-2026-50656

Mitre link : CVE-2026-50656

CVE.ORG link : CVE-2026-50656

JSON object : View

Products Affected

microsoft

malware_protection_engine

CWE

CWE-59

Improper Link Resolution Before File Access ('Link Following')

{"id": "CVE-2026-50656", "cveTags": [], "metrics": {"ssvcV203": [{"source": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "ssvcData": {"id": "CVE-2026-50656", "role": "CISA Coordinator", "options": [{"exploitation": "poc"}, {"automatable": "no"}, {"technicalImpact": "total"}], "version": "2.0.3", "timestamp": "2026-06-17T03:56:00.813025Z"}}], "cvssMetricV31": [{"type": "Secondary", "source": "secure@microsoft.com", "cvssData": {"scope": "UNCHANGED", "version": "3.1", "baseScore": 7.8, "attackVector": "LOCAL", "baseSeverity": "HIGH", "vectorString": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H", "integrityImpact": "HIGH", "userInteraction": "NONE", "attackComplexity": "LOW", "availabilityImpact": "HIGH", "privilegesRequired": "LOW", "confidentialityImpact": "HIGH"}, "impactScore": 5.9, "exploitabilityScore": 1.8}, {"type": "Primary", "source": "nvd@nist.gov", "cvssData": {"scope": "UNCHANGED", "version": "3.1", "baseScore": 7.0, "attackVector": "LOCAL", "baseSeverity": "HIGH", "vectorString": "CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H", "integrityImpact": "HIGH", "userInteraction": "NONE", "attackComplexity": "HIGH", "availabilityImpact": "HIGH", "privilegesRequired": "LOW", "confidentialityImpact": "HIGH"}, "impactScore": 5.9, "exploitabilityScore": 1.0}]}, "affected": [{"source": "secure@microsoft.com", "affectedData": [{"vendor": "Microsoft", "product": "Microsoft Malware Protection Engine", "versions": [{"status": "affected", "version": "1.1.0.0", "lessThan": "1.1.26060.3008", "versionType": "custom"}]}]}], "published": "2026-06-16T19:16:59.683", "references": [{"url": "https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-50656", "tags": ["Vendor Advisory"], "source": "secure@microsoft.com"}, {"url": "https://github.com/MSNightmare/ShieldBreak", "source": "134c704f-9b21-4f2e-91b3-4a467353bcc0"}], "vulnStatus": "Modified", "weaknesses": [{"type": "Secondary", "source": "secure@microsoft.com", "description": [{"lang": "en", "value": "CWE-59"}]}], "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 "RoguePlanet "."}, {"lang": "es", "value": "Microsoft tiene conocimiento de una elevaci\u00f3n de privilegios en el Motor de Protecci\u00f3n de Malware de Microsoft Defensor, conocida p\u00fablicamente como \u2019RoguePlanet\u2019. Estamos trabajando para proporcionar una actualizaci\u00f3n de seguridad de alta calidad que aborda esta vulnerabilidad. Proporcionaremos informaci\u00f3n en este CVE cuando la actualizaci\u00f3n est\u00e9 disponible."}], "lastModified": "2026-10-25T23:10:00.167", "configurations": [{"nodes": [{"negate": false, "cpeMatch": [{"criteria": "cpe:2.3:a:microsoft:malware_protection_engine:-:*:*:*:*:*:*:*", "vulnerable": true, "matchCriteriaId": "1CF44512-0B67-4B5F-B271-C8CA45D30DA8"}], "operator": "OR"}]}], "sourceIdentifier": "secure@microsoft.com"}