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CVE-2021-34452— Microsoft Word Remote Code Execution Vulnerability

Quick assessment

Affected
Microsoft Microsoft 365 Apps for Enterprise
Exploitation
No confirmed in-the-wild exploitation; assess based on exposure
Recommended action
Check the vendor advisory and references for a fixed version. If immediate upgrade is impossible, restrict exposure and increase monitoring.

Microsoft Office是美国微软（Microsoft）公司的一款办公软件套件产品。该产品常用组件包括Word、Excel、Access、Powerpoint、FrontPage等。 Microsoft Office存在代码注入漏洞。以下产品和版本受到影响：Microsoft Office 2019 for 32-bit editions,Microsoft Office 2019 for 64-bit editions,Microsoft Word 2016 (64-bit edition),M

CVSS 7.8 · High EPSS 2.21% · P81

Possible ATT&CK Techniques 1 AI

T1190 · Exploit Public-Facing Application

Affected Version Matrix 3

VendorProduct Version RangeStatus
Microsoft Microsoft 365 Apps for Enterprise 16.0.1< https://aka.ms/OfficeSecurityReleases affected
Microsoft Microsoft Office 2019 19.0.0< https://aka.ms/OfficeSecurityReleases affected
Microsoft Microsoft Word 2016 16.0.1< 16.0.5188.1000 affected
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I. Basic Information for CVE-2021-34452

Vulnerability Information
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Vulnerability Title
Microsoft Word Remote Code Execution Vulnerability
Source: CVE Program / CVE List V5
Vulnerability Description
Microsoft Word 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
Microsoft Office 代码注入漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
Microsoft Office是美国微软（Microsoft）公司的一款办公软件套件产品。该产品常用组件包括Word、Excel、Access、Powerpoint、FrontPage等。 Microsoft Office存在代码注入漏洞。以下产品和版本受到影响：Microsoft Office 2019 for 32-bit editions,Microsoft Office 2019 for 64-bit editions,Microsoft Word 2016 (64-bit edition),M
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 365 Apps for Enterprise 16.0.1 ~ https://aka.ms/OfficeSecurityReleases -
Microsoft Microsoft Office 2019 19.0.0 ~ https://aka.ms/OfficeSecurityReleases -
Microsoft Microsoft Word 2016 16.0.1 ~ 16.0.5188.1000 -

II. Public POCs for CVE-2021-34452

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III. Intelligence Information for CVE-2021-34452

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Vendor Advisories for CVE-2021-34452 (2)

Same Patch Batch · Microsoft · 2021-07-16 · 27 CVEs total

CVE-2021-34458 9.9 CRITICAL Windows Kernel Remote Code Execution Vulnerability
CVE-2021-34481 8.8 HIGH Windows Print Spooler Remote Code Execution Vulnerability
CVE-2021-34442 8.8 HIGH Windows DNS Server Remote Code Execution Vulnerability
CVE-2021-34450 8.5 HIGH Windows Hyper-V Remote Code Execution Vulnerability
CVE-2021-34446 8.0 HIGH Windows HTML Platforms Security Feature Bypass Vulnerability
CVE-2021-34464 7.8 HIGH Microsoft Defender Remote Code Execution Vulnerability
CVE-2021-34438 7.8 HIGH Windows Font Driver Host Remote Code Execution Vulnerability
CVE-2021-34439 7.8 HIGH Microsoft Windows Media Foundation Remote Code Execution Vulnerability
CVE-2021-34461 7.8 HIGH Windows Container Isolation FS Filter Driver Elevation of Privilege Vulnerability
CVE-2021-34460 7.8 HIGH Windows Storage Spaces Controller Elevation of Privilege Vulnerability
CVE-2021-34459 7.8 HIGH Windows AppContainer Elevation Of Privilege Vulnerability
CVE-2021-34456 7.8 HIGH Windows Remote Access Connection Manager Elevation of Privilege Vulnerability
CVE-2021-34441 7.8 HIGH Microsoft Windows Media Foundation Remote Code Execution Vulnerability
CVE-2021-34455 7.8 HIGH Windows File History Service Elevation of Privilege Vulnerability
CVE-2021-34445 7.8 HIGH Windows Remote Access Connection Manager Elevation of Privilege Vulnerability
CVE-2021-34467 7.1 HIGH Microsoft SharePoint Server Remote Code Execution Vulnerability
CVE-2021-34449 7.0 HIGH Win32k Elevation of Privilege Vulnerability
CVE-2021-34462 7.0 HIGH Windows AppX Deployment Extensions Elevation of Privilege Vulnerability
CVE-2021-34448 6.8 MEDIUM Scripting Engine Memory Corruption Vulnerability
CVE-2021-34447 6.8 MEDIUM Windows MSHTML Platform Remote Code Execution Vulnerability

Showing top 20 of 27 CVEs. View all on vendor page &rarr; →

IV. Related Vulnerabilities

Same product: Microsoft 365 Apps for Enterprise
Same vendor: Microsoft

V. Comments for CVE-2021-34452

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