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Fencer Intel
high 7.8

CVE-2020-1163 json

An elevation of privilege vulnerability exists in Windows Defender that leads arbitrary file deletion on the system.To exploit the vulnerab…

published 6y ago modified 4mo ago also EUVD-2020-12046

cvss
7.8
version 3.1, NVD
cisa kev
Not listed
not in CISA's catalog
epss
0.9%
EPSS 0.9% chance of exploitation in 30 days, percentile 59%
public exploits
0
none known

Summary

An elevation of privilege vulnerability exists in Windows Defender that leads arbitrary file deletion on the system.To exploit the vulnerability, an attacker would first have to log on to the system, aka 'Microsoft Windows Defender Elevation of Privilege Vulnerability'. This CVE ID is unique from CVE-2020-1170.

Patch / fix

Is CVE-2020-1163 in your stack? Fencer shows which of your repositories are affected as soon as an advisory lands, and opens the fix as a pull request.

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Exploit prediction

0.89% chance of exploitation in the next 30 days, higher than 59% of all scored CVEs (FIRST EPSS, 2026-11-09).

CVSS scores

assigned by version score vector
NVD 3.1 7.8 CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
NVD 2.0 7.2 AV:L/AC:L/Au:N/C:C/I:C/A:C

Affected products

  • Microsoft Microsoft Forefront Endpoint Protection
  • Microsoft Microsoft System Center
  • Microsoft Microsoft Security Essentials
  • Microsoft Windows Defender on Windows 10 Version 1909 for 32-bit Systems
  • Microsoft Windows Defender on Windows 10 Version 1909 for x64-based Systems
  • Microsoft Windows Defender on Windows 10 Version 1909 for ARM64-based Systems
  • Microsoft Windows Defender on Windows Server, version 1909 (Server Core installation)
  • Microsoft Windows Defender on Windows 10 Version 1803 for 32-bit Systems
  • Microsoft Windows Defender on Windows 10 Version 1803 for x64-based Systems
  • Microsoft Windows Defender on Windows Server, version 1803 (Server Core Installation)
  • Microsoft Windows Defender on Windows 10 Version 1803 for ARM64-based Systems
  • Microsoft Windows Defender on Windows 10 Version 1809 for 32-bit Systems
  • Microsoft Windows Defender on Windows 10 Version 1809 for x64-based Systems
  • Microsoft Windows Defender on Windows 10 Version 1809 for ARM64-based Systems
  • Microsoft Windows Defender on Windows Server 2019
  • Microsoft Windows Defender on Windows Server 2019 (Server Core installation)
  • Microsoft Windows Defender on Windows 10 Version 1709 for 32-bit Systems
  • Microsoft Windows Defender on Windows 10 Version 1709 for x64-based Systems
  • Microsoft Windows Defender on Windows 10 Version 1709 for ARM64-based Systems
  • Microsoft Windows Defender on Windows 10 Version 1903 for 32-bit Systems
  • Microsoft Windows Defender on Windows 10 Version 1903 for x64-based Systems
  • Microsoft Windows Defender on Windows 10 Version 1903 for ARM64-based Systems
  • Microsoft Windows Defender on Windows Server, version 1903 (Server Core installation)
  • Microsoft Windows Defender on Windows 10 for 32-bit Systems
  • Microsoft Windows Defender on Windows 10 for x64-based Systems
  • Microsoft Windows Defender on Windows 10 Version 1607 for 32-bit Systems
  • Microsoft Windows Defender on Windows 10 Version 1607 for x64-based Systems
  • Microsoft Windows Defender on Windows Server 2016
  • Microsoft Windows Defender on Windows Server 2016 (Server Core installation)
  • Microsoft Windows Defender on Windows 7 for 32-bit Systems
  • Microsoft Windows Defender on Windows 7 for x64-based Systems
  • Microsoft Windows Defender on Windows 8.1 for 32-bit systems
  • Microsoft Windows Defender on Windows 8.1 for x64-based systems
  • Microsoft Windows Defender on Windows RT 8.1
  • Microsoft Windows Defender on Windows Server 2008 for 32-bit Systems
  • Microsoft Windows Defender on Windows Server 2008 for 32-bit Systems (Server Core installation)
  • Microsoft Windows Defender on Windows Server 2008 for Itanium-Based Systems
  • Microsoft Windows Defender on Windows Server 2008 R2 for Itanium-Based Systems
  • Microsoft Windows Defender on Windows Server 2008 R2 for x64-based Systems
  • Microsoft Windows Defender on Windows Server 2008 R2 for x64-based Systems (Server Core installation)
  • Microsoft Windows Defender on Windows Server 2012
  • Microsoft Windows Defender on Windows Server 2012 (Server Core installation)
  • Microsoft Windows Defender on Windows Server 2012 R2
  • Microsoft Windows Defender on Windows Server 2012 R2 (Server Core installation)

References

Sources

Fencer Intel keeps one entry per vulnerability: the CVE id wins, then GHSA, and records that alias each other are merged, except that two CVEs always keep separate entries. The same data is available as JSON.