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CVE-2021-31985— Microsoft Defender Remote Code Execution Vulnerability

Quick assessment

Affected
Microsoft Microsoft Malware Protection Engine
Exploitation
High exploitation probability; assess promptly
Recommended action
Check the vendor advisory and references for a fixed version. If immediate upgrade is impossible, restrict exposure and increase monitoring.

Microsoft Defender是美国微软（Microsoft）公司的一款威胁防护软件。Vulnerability是一个应用软件。 此项目将不定期从棱角社区对外进行公布一些最新漏洞。 Windows Defender存在安全漏洞。以下产品和版本受到影响：Microsoft Malware Protection Engine,

CVSS 7.8 · High EPSS 7.76% · P94

Possible ATT&CK Techniques 1 AI

T1190 · Exploit Public-Facing Application
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I. Basic Information for CVE-2021-31985

Vulnerability Information
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Vulnerability Title
Microsoft Defender Remote Code Execution Vulnerability
Source: CVE Program / CVE List V5
Vulnerability Description
Microsoft Defender Remote Code Execution Vulnerability
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
Source: CVE Program / CVE List V5
Vulnerability Type
N/A
Source: CVE Program / CVE List V5
Vulnerability Title
Windows Defender 代码注入漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
Microsoft Defender是美国微软（Microsoft）公司的一款威胁防护软件。Vulnerability是一个应用软件。 此项目将不定期从棱角社区对外进行公布一些最新漏洞。 Windows Defender存在安全漏洞。以下产品和版本受到影响：Microsoft Malware Protection Engine,
Source: CNNVD (China National Vulnerability Database)
CVSS Information
N/A
Source: CNNVD (China National Vulnerability Database)
Vulnerability Type
N/A
Source: CNNVD (China National Vulnerability Database)

Affected Products

Vendor Product Affected Versions CPE Subscribe
Microsoft Microsoft Malware Protection Engine 1.1.0.0 ~ Version 1.1.18200.3 cpe:2.3:a:microsoft:malware_protection_engine:*:*:*:*:*:*:*:*

II. Public POCs for CVE-2021-31985

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III. Intelligence Information for CVE-2021-31985

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Vendor Advisories for CVE-2021-31985 (1)

Exploits & Public PoCs for CVE-2021-31985 (1)

Same Patch Batch · Microsoft · 2021-06-08 · 50 CVEs total

CVE-2021-31962 9.4 CRITICAL Kerberos AppContainer Security Feature Bypass Vulnerability
CVE-2021-31977 8.6 HIGH Windows Hyper-V Denial of Service Vulnerability
CVE-2021-33739 8.4 HIGH Microsoft DWM Core Library Elevation of Privilege Vulnerability
CVE-2021-33741 8.2 HIGH Microsoft Edge (Chromium-based) Elevation of Privilege Vulnerability
CVE-2021-31980 8.1 HIGH Microsoft Intune Management Extension Remote Code Execution Vulnerability
CVE-2021-31973 7.8 HIGH Windows GPSVC Elevation of Privilege Vulnerability
CVE-2021-31942 7.8 HIGH 3D Viewer Remote Code Execution Vulnerability
CVE-2021-31967 7.8 HIGH VP9 Video Extensions Remote Code Execution Vulnerability
CVE-2021-1675 7.8 HIGH Windows Print Spooler Remote Code Execution Vulnerability
CVE-2021-31940 7.8 HIGH Microsoft Office Graphics Remote Code Execution Vulnerability
CVE-2021-31939 7.8 HIGH Microsoft Excel Remote Code Execution Vulnerability
CVE-2021-31941 7.8 HIGH Microsoft Office Graphics Remote Code Execution Vulnerability
CVE-2021-31943 7.8 HIGH 3D Viewer Remote Code Execution Vulnerability
CVE-2021-31956 7.8 HIGH Windows NTFS Elevation of Privilege Vulnerability
CVE-2021-31954 7.8 HIGH Windows Common Log File System Driver Elevation of Privilege Vulnerability
CVE-2021-31952 7.8 HIGH Windows Kernel-Mode Driver Elevation of Privilege Vulnerability
CVE-2021-31953 7.8 HIGH Windows Filter Manager Elevation of Privilege Vulnerability
CVE-2021-31951 7.8 HIGH Windows Kernel Elevation of Privilege Vulnerability
CVE-2021-31945 7.8 HIGH Paint 3D Remote Code Execution Vulnerability
CVE-2021-31946 7.8 HIGH Paint 3D Remote Code Execution Vulnerability

Showing top 20 of 50 CVEs. View all on vendor page → →

IV. Related Vulnerabilities

Same product: Microsoft Malware Protection Engine
Same vendor: Microsoft

V. Comments for CVE-2021-31985

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