An elevation of privilege vulnerability exists when the MpSigStub.exe for Defender allows file deletion in arbitrary locations.To exploit…

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, aka 'Microsoft Defender Elevation of Privilege Vulnerability'.

Scores

EPSS (exploitation in 30 days)

0.74% · top 45% of all CVEs (5 Nov 2026)

CISA SSVC

Exploitation: none · Automatable: no · Technical impact: partial

The list uses the assigner's score when there is one, then CISA's, then NVD's: High 7.1.

Weakness

• Elevation of Privilege

Affected products

• Microsoft · Microsoft Forefront Endpoint Protection

  • affected 2010

• Microsoft · Microsoft System Center

  • affected Endpoint Protection
  • affected 2012 R2 Endpoint Protection
  • affected 2012 Endpoint Protection

• Microsoft · Microsoft Security Essentials

  • affected unspecified

• Microsoft · Windows Defender on Windows 10 Version 1909 for 32-bit Systems

  • affected unspecified

• Microsoft · Windows Defender on Windows 10 Version 1909 for x64-based Systems

  • affected unspecified

• Microsoft · Windows Defender on Windows 10 Version 1909 for ARM64-based Systems

  • affected unspecified

• Microsoft · Windows Defender on Windows Server, version 1909 (Server Core installation)

  • affected unspecified

• Microsoft · Windows Defender on Windows 10 Version 1803 for 32-bit Systems

  • affected unspecified

• Microsoft · Windows Defender on Windows 10 Version 1803 for x64-based Systems

  • affected unspecified

• Microsoft · Windows Defender on Windows Server, version 1803 (Server Core Installation)

  • affected unspecified

• Microsoft · Windows Defender on Windows 10 Version 1803 for ARM64-based Systems

  • affected unspecified

• Microsoft · Windows Defender on Windows 10 Version 1809 for 32-bit Systems

  • affected unspecified

• Microsoft · Windows Defender on Windows 10 Version 1809 for x64-based Systems

  • affected unspecified

• Microsoft · Windows Defender on Windows 10 Version 1809 for ARM64-based Systems

  • affected unspecified

• Microsoft · Windows Defender on Windows Server 2019

  • affected unspecified

• Microsoft · Windows Defender on Windows Server 2019 (Server Core installation)

  • affected unspecified

• Microsoft · Windows Defender on Windows 10 Version 1709 for 32-bit Systems

  • affected unspecified

• Microsoft · Windows Defender on Windows 10 Version 1709 for x64-based Systems

  • affected unspecified

• Microsoft · Windows Defender on Windows 10 Version 1709 for ARM64-based Systems

  • affected unspecified

• Microsoft · Windows Defender on Windows 10 Version 1903 for 32-bit Systems

  • affected unspecified

• Microsoft · Windows Defender on Windows 10 Version 1903 for x64-based Systems

  • affected unspecified

• Microsoft · Windows Defender on Windows 10 Version 1903 for ARM64-based Systems

  • affected unspecified

• Microsoft · Windows Defender on Windows Server, version 1903 (Server Core installation)

  • affected unspecified

• Microsoft · Windows Defender on Windows 10 for 32-bit Systems

  • affected unspecified

• Microsoft · Windows Defender on Windows 10 for x64-based Systems

  • affected unspecified

• Microsoft · Windows Defender on Windows 10 Version 1607 for 32-bit Systems

  • affected unspecified

• Microsoft · Windows Defender on Windows 10 Version 1607 for x64-based Systems

  • affected unspecified

• Microsoft · Windows Defender on Windows Server 2016

  • affected unspecified

• Microsoft · Windows Defender on Windows Server 2016 (Server Core installation)

  • affected unspecified

• Microsoft · Windows Defender on Windows 7 for 32-bit Systems

  • affected Service Pack 1

• Microsoft · Windows Defender on Windows 7 for x64-based Systems

  • affected Service Pack 1

• Microsoft · Windows Defender on Windows 8.1 for 32-bit systems

  • affected unspecified

• Microsoft · Windows Defender on Windows 8.1 for x64-based systems

  • affected unspecified

• Microsoft · Windows Defender on Windows RT 8.1

  • affected unspecified

• Microsoft · Windows Defender on Windows Server 2008 for 32-bit Systems

  • affected Service Pack 2

• Microsoft · Windows Defender on Windows Server 2008 for 32-bit Systems (Server Core installation)

  • affected Service Pack 2

• Microsoft · Windows Defender on Windows Server 2008 for Itanium-Based Systems

  • affected Service Pack 2

• Microsoft · Windows Defender on Windows Server 2008 R2 for Itanium-Based Systems

  • affected Service Pack 1

• Microsoft · Windows Defender on Windows Server 2008 R2 for x64-based Systems

  • affected Service Pack 1

• Microsoft · Windows Defender on Windows Server 2008 R2 for x64-based Systems (Server Core installation)

  • affected Service Pack 1

• Microsoft · Windows Defender on Windows Server 2012

  • affected unspecified

• Microsoft · Windows Defender on Windows Server 2012 (Server Core installation)

  • affected unspecified

• Microsoft · Windows Defender on Windows Server 2012 R2

  • affected unspecified

• Microsoft · Windows Defender on Windows Server 2012 R2 (Server Core installation)

  • affected unspecified

References (1)

• https://portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2020-1002 (opens in a new tab)x_refsource_MISCx_transferred

Sources

The same CVE in the primary databases and aggregators, to check against.

• CVE.org record (opens in a new tab)
• CVE List JSON (GitHub) (opens in a new tab)
• NVD (opens in a new tab)
• FIRST EPSS (opens in a new tab)
• OSV.dev (opens in a new tab)
• GitHub Advisories (opens in a new tab)
• CIRCL Vulnerability-Lookup (opens in a new tab)

Badge for a README or a ticket

[![CVE-2020-1002](https://trackcve.app/badge/CVE-2020-1002.svg)](https://trackcve.app/cve/CVE-2020-1002)

Record last updated 2 Nov 2026, 17:53 UTC.