CVE-2019-1161

Microsoft Defender Elevation of Privilege Vulnerability

HIGH

7.1

CVSS Score

Published: August 14, 2019 at 08:55 PM UTC

Updated: June 17, 2026 at 02:27 AM UTC

11 products affected across 1 vendorWindows DefenderSecurity EssentialsSystem Center Endpoint Protection

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Severity

HIGH7.1

Exploit prediction

EPSS 1.0%

Description

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.

Affected

Our own answer: ranges merged, affected separated from platform-only, with confidence and review flags.

Forefront Endpoint Protection 2010 · Microsoft

95%

All versions

Security Essentials · Microsoft

95%

All versions

System Center Endpoint Protection · Microsoft

95%

2012 2012 r2

Windows Defender · Microsoft

95%

All versions

microsoft-windows-10 (environment) · microsoft-windows-7 (environment) · microsoft-windows-8-1 (environment) · microsoft-windows-rt-8-1 (environment) · microsoft-windows-server-2008 (environment) · microsoft-windows-server-2012 (environment) · microsoft-windows-server-2016 (environment)

Windows 10 · Microsoftdevice

80%

All versions

Windows 7 · Microsoftdevice

80%

All versions

Windows 8-1 · Microsoftdevice

80%

All versions

Windows Rt 8-1 · Microsoftdevice

80%

All versions