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Vulnerability record · CVE-2020-1163 · published 9 June 2020

CVE-2020-1163: Microsoft windows defender vulnerability

Microsoft · Windows Defender

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.

7.8 CVSS 3.1 High EPSS 0.89% · top 42.4%
7.8CVSS 3.1 base score, v2 7.2
0.89%EPSS exploitation probability, 30 days
NoNot in CISA KEV
4Affected product versions listed by NVD
2References
17 Jun 2026Last modified by NVD

Description

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.

CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

Affected products

4 vulnerable configurations from NVD's CPE data, grouped by vendor and product.

References

LinkTags
https://portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2020-1163 PatchVendor Advisory
https://portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2020-1163 PatchVendor Advisory

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Related vulnerabilities

Same products first, then exploited flaws of the same weakness class.

7.8CVE-2021-1647Microsoft Defender Remote Code Execution VulnerabilityCVE-2021-1647 is a remote code execution flaw in Microsoft Defender, the built-in antivirus and endpoint protection component of Windows, as well as …KEVEPSS 39%analysed7.8CVE-2017-8540Microsoft Malware Protection Engine out-of-bounds write via crafted fileThe Microsoft Malware Protection Engine, used by Windows Defender, Forefront, Security Essentials, System Center Endpoint Protection, Intune Endpoint…KEVEPSS 72%analysed9.3CVE-2006-5270Microsoft antigen vulnerabilityInteger overflow in the Microsoft Malware Protection Engine (mpengine.dll), as used by Windows Live OneCare, Antigen, Defender, and Forefront Securit…EPSS 30%8.8CVE-2018-0986Microsoft Malware Protection Engine out-of-bounds write enables remote code executionThe Microsoft Malware Protection Engine mishandles a specially crafted file during scanning, causing an out-of-bounds write and memory corruption. Be…EPSS 63%analysed7.8CVE-2023-36422Microsoft windows defender untrusted search path vulnerabilityMicrosoft Windows Defender Elevation of Privilege VulnerabilityEPSS 0.81%7.8CVE-2023-38175Microsoft windows defender link following vulnerabilityMicrosoft Windows Defender Elevation of Privilege VulnerabilityEPSS 0.54%7.8CVE-2021-24092Microsoft windows defender improper privilege management vulnerabilityMicrosoft Defender Elevation of Privilege VulnerabilityEPSS 0.61%7.8CVE-2020-1170Microsoft windows defender incorrect permission assignment vulnerabilityAn elevation of privilege vulnerability exists in Windows Defender that leads arbitrary file deletion on the system.To exploit the vulnerability, an …EPSS 1.6%

Source: NIST National Vulnerability Database (record CVE-2020-1163), CISA KEV, FIRST EPSS (scores of 2026-09-26). This page is refreshed as NVD updates the record.