# CVE-2020-1002: CVE-2020-1002

Status: published. Published: 2020-04-15. Updated: 2026-11-02.

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'.

## Remediation

No remediation reported in collected sources

## Affected products and versions

- Microsoft / Microsoft Forefront Endpoint Protection: 2010 (affected). Source: CNA: microsoft
- Microsoft / Microsoft System Center: Endpoint Protection (affected); 2012 R2 Endpoint Protection (affected); 2012 Endpoint Protection (affected). Source: CNA: microsoft
- Microsoft / Microsoft Security Essentials: Version not specified (affected). Source: CNA: microsoft
- Microsoft / Windows Defender on Windows 10 Version 1909 for 32-bit Systems: Version not specified (affected). Source: CNA: microsoft
- Microsoft / Windows Defender on Windows 10 Version 1909 for x64-based Systems: Version not specified (affected). Source: CNA: microsoft
- Microsoft / Windows Defender on Windows 10 Version 1909 for ARM64-based Systems: Version not specified (affected). Source: CNA: microsoft
- Microsoft / Windows Defender on Windows Server, version 1909 (Server Core installation): Version not specified (affected). Source: CNA: microsoft
- Microsoft / Windows Defender on Windows 10 Version 1803 for 32-bit Systems: Version not specified (affected). Source: CNA: microsoft
- Microsoft / Windows Defender on Windows 10 Version 1803 for x64-based Systems: Version not specified (affected). Source: CNA: microsoft
- Microsoft / Windows Defender on Windows Server, version 1803  (Server Core Installation): Version not specified (affected). Source: CNA: microsoft
- Microsoft / Windows Defender on Windows 10 Version 1803 for ARM64-based Systems: Version not specified (affected). Source: CNA: microsoft
- Microsoft / Windows Defender on Windows 10 Version 1809 for 32-bit Systems: Version not specified (affected). Source: CNA: microsoft
- Microsoft / Windows Defender on Windows 10 Version 1809 for x64-based Systems: Version not specified (affected). Source: CNA: microsoft
- Microsoft / Windows Defender on Windows 10 Version 1809 for ARM64-based Systems: Version not specified (affected). Source: CNA: microsoft
- Microsoft / Windows Defender on Windows Server 2019: Version not specified (affected). Source: CNA: microsoft
- Microsoft / Windows Defender on Windows Server 2019  (Server Core installation): Version not specified (affected). Source: CNA: microsoft
- Microsoft / Windows Defender on Windows 10 Version 1709 for 32-bit Systems: Version not specified (affected). Source: CNA: microsoft
- Microsoft / Windows Defender on Windows 10 Version 1709 for x64-based Systems: Version not specified (affected). Source: CNA: microsoft
- Microsoft / Windows Defender on Windows 10 Version 1709 for ARM64-based Systems: Version not specified (affected). Source: CNA: microsoft
- Microsoft / Windows Defender on Windows 10 Version 1903 for 32-bit Systems: Version not specified (affected). Source: CNA: microsoft
- Microsoft / Windows Defender on Windows 10 Version 1903 for x64-based Systems: Version not specified (affected). Source: CNA: microsoft
- Microsoft / Windows Defender on Windows 10 Version 1903 for ARM64-based Systems: Version not specified (affected). Source: CNA: microsoft
- Microsoft / Windows Defender on Windows Server, version 1903 (Server Core installation): Version not specified (affected). Source: CNA: microsoft
- Microsoft / Windows Defender on Windows 10 for 32-bit Systems: Version not specified (affected). Source: CNA: microsoft
- Microsoft / Windows Defender on Windows 10 for x64-based Systems: Version not specified (affected). Source: CNA: microsoft
- Microsoft / Windows Defender on Windows 10 Version 1607 for 32-bit Systems: Version not specified (affected). Source: CNA: microsoft
- Microsoft / Windows Defender on Windows 10 Version 1607 for x64-based Systems: Version not specified (affected). Source: CNA: microsoft
- Microsoft / Windows Defender on Windows Server 2016: Version not specified (affected). Source: CNA: microsoft
- Microsoft / Windows Defender on Windows Server 2016  (Server Core installation): Version not specified (affected). Source: CNA: microsoft
- Microsoft / Windows Defender on Windows 7 for 32-bit Systems: Service Pack 1 (affected). Source: CNA: microsoft
- Microsoft / Windows Defender on Windows 7 for x64-based Systems: Service Pack 1 (affected). Source: CNA: microsoft
- Microsoft / Windows Defender on Windows 8.1 for 32-bit systems: Version not specified (affected). Source: CNA: microsoft
- Microsoft / Windows Defender on Windows 8.1 for x64-based systems: Version not specified (affected). Source: CNA: microsoft
- Microsoft / Windows Defender on Windows RT 8.1: Version not specified (affected). Source: CNA: microsoft
- Microsoft / Windows Defender on Windows Server 2008 for 32-bit Systems: Service Pack 2 (affected). Source: CNA: microsoft
- Microsoft / Windows Defender on Windows Server 2008 for 32-bit Systems (Server Core installation): Service Pack 2 (affected). Source: CNA: microsoft
- Microsoft / Windows Defender on Windows Server 2008 for Itanium-Based Systems: Service Pack 2 (affected). Source: CNA: microsoft
- Microsoft / Windows Defender on Windows Server 2008 R2 for Itanium-Based Systems: Service Pack 1 (affected). Source: CNA: microsoft
- Microsoft / Windows Defender on Windows Server 2008 R2 for x64-based Systems: Service Pack 1 (affected). Source: CNA: microsoft
- Microsoft / Windows Defender on Windows Server 2008 R2 for x64-based Systems (Server Core installation): Service Pack 1 (affected). Source: CNA: microsoft
- Microsoft / Windows Defender on Windows Server 2012: Version not specified (affected). Source: CNA: microsoft
- Microsoft / Windows Defender on Windows Server 2012 (Server Core installation): Version not specified (affected). Source: CNA: microsoft
- Microsoft / Windows Defender on Windows Server 2012 R2: Version not specified (affected). Source: CNA: microsoft
- Microsoft / Windows Defender on Windows Server 2012 R2 (Server Core installation): Version not specified (affected). Source: CNA: microsoft

## Severity and prioritization

- CISA KEV: No listing in collected sources

- EPSS: 0.71% as of 2026-11-02; percentile 53.56%

- SSVC: exploitation none; automatable no; technical impact partial; source ADP: CISA-ADP

- Weaknesses: Not reported

## Exploit evidence

No exploit evidence in collected sources. This is not proof of no exploitation.

## References

- https://portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2020-1002 (CNA: microsoft; x_refsource_MISC)

- https://portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2020-1002 (ADP: CVE; x_refsource_MISC, x_transferred)

## Provenance

- CNA: microsoft: https://www.cve.org/CVERecord?id=CVE-2020-1002; retrieved 2026-11-02; source updated 2026-11-02

- FIRST EPSS: https://api.first.org/data/v1/epss?cve=CVE-2020-1002; retrieved 2026-11-02; source updated Not reported

Revision: f43c50328425ce5c56f01c509159c1136b12c43a7bd8b6b352f53164c2d10e5f

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