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    CVE-2019-1161

    An elevation of privilege vulnerability exists when the MpSigStub.exe for Defender allows file deletion in arbitrary locations. To exploit the vulnerability, an attacker would first have to log on to the system. An attacker could then run a specially crafted command that could exploit the vulnerability and delete protected files on an affected system once MpSigStub.exe ran again. The update addresses the vulnerability and blocks the arbitrary deletion.

    Published:Aug 14, 2019
    Last Modified:Feb 20, 2026
    EPS:Aug 14, 2019
    EPSS Score:0.00563
    CVSS Score:7.1

    Affected Products

    Vendor
    Microsoft
    Product
    Forefront Endpoint Protection 2010
    Vendor
    Microsoft
    Product
    Security Essentials
    Vendor
    Microsoft
    Product
    System Center Endpoint Protection
    Vendor
    Microsoft
    Product
    Windows 10
    Vendor
    Microsoft
    Product
    Windows 7
    Vendor
    Microsoft
    Product
    Windows 8.1
    Vendor
    Microsoft
    Product
    Windows Defender
    Vendor
    Microsoft
    Product
    Windows Rt 8.1
    Vendor
    Microsoft
    Product
    Windows Server 2008
    Vendor
    Microsoft
    Product
    Windows Server 2012
    Vendor
    Microsoft
    Product
    Windows Server 2016

    Exploits

    No exploit reference

    Common Weakness Enumeration

    No CWE recorded yet

    Common Attack Pattern Enumeration and Classification (CAPEC)

    No CAPEC recorded yet

    Related CVEs

    CVE-2020-1461 (CVSS 7.1) — An elevation of privilege vulnerability exists when the MpSigStub.exe for Defender allows file deletion in arb…
    CVE-2020-1170 (CVSS 7.8) — An elevation of privilege vulnerability exists in Windows Defender that leads arbitrary file deletion on the s…
    CVE-2020-1163 (CVSS 7.8) — An elevation of privilege vulnerability exists in Windows Defender that leads arbitrary file deletion on the s…
    CVE-2020-1002 (CVSS 7.1) — An elevation of privilege vulnerability exists when the MpSigStub.exe for Defender allows file deletion in arb…
    CVE-2019-1255 (CVSS 7.5) — A denial of service vulnerability exists when Microsoft Defender improperly handles files, aka 'Microsoft Defe…
    CVE-2018-0986 (CVSS 8.8) — A remote code execution vulnerability exists when the Microsoft Malware Protection Engine does not properly sc…
    CVE-2017-11940 (CVSS 7.8) — The Microsoft Malware Protection Engine running on Microsoft Forefront and Microsoft Defender on Windows 7 SP1…
    CVE-2017-11937 (CVSS 7.8) — The Microsoft Malware Protection Engine running on Microsoft Forefront and Microsoft Defender on Windows 7 SP1…
    CVE-2011-0037 (CVSS 7.2) — Microsoft Malware Protection Engine before 1.1.6603.0, as used in Microsoft Malicious Software Removal Tool (M…

    Common Vulnerability Scoring System

    Attack Vector
    Network
    Adjacent
    Local
    Physical
    Privileges Required
    None
    Low
    High
    User Interaction
    None
    Required
    Scope
    Unchanged
    Changed
    Confidentiality
    None
    Low
    High
    Integrity
    None
    Low
    High
    Availability
    None
    Low
    High