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CVE-2023-21716— Microsoft Word Remote Code Execution Vulnerability

Quick assessment

Affected
Microsoft Microsoft 365 Apps for Enterprise
Exploitation
Public or AI PoC available; prioritize validation
Recommended action
Check the vendor advisory and references for a fixed version. If immediate upgrade is impossible, restrict exposure and increase monitoring.

Microsoft Word是美国微软（Microsoft）公司的一套Office套件中的文字处理软件。 Microsoft Office Word存在安全漏洞。以下产品和版本受到影响：Microsoft Office Online Server,Microsoft Office 2019 for Mac,Microsoft 365 Apps for Enterprise for 64-bit Systems,Microsoft SharePoint Enterprise Server 2016,Micr

CVSS 9.8 · Critical EPSS 84.80% · P100

Possible ATT&CK Techniques 1 AI

T1190 · Exploit Public-Facing Application

Affected Version Matrix 16

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 Office 2019 for Mac 16.0.0< 16.70.23021201 affected
Microsoft Microsoft Office LTSC 2021 16.0.1< https://aka.ms/OfficeSecurityReleases affected
Microsoft Microsoft Office LTSC for Mac 2021 16.0.1< 16.70.23021201 affected
Microsoft Microsoft Office Online Server 16.0.1< 16.0.10395.20001 affected
Microsoft Microsoft Office Web Apps Server 2013 Service Pack 1 15.0.1< 15.0.5529.1000 affected
Microsoft Microsoft SharePoint Enterprise Server 2013 Service Pack 1 15.0.0< 15.0.5529.1000 affected
Microsoft Microsoft SharePoint Enterprise Server 2016 16.0.0< 16.0.5383.1000 affected
Microsoft Microsoft SharePoint Foundation 2013 Service Pack 1 15.0.0< 15.0.5529.1000 affected
Microsoft Microsoft SharePoint Server 2019 16.0.0< 16.0.10395.20001 affected
Microsoft Microsoft SharePoint Server Subscription Edition 16.0.0< 16.0.15601.20478 affected
Microsoft Microsoft Word 2013 Service Pack 1 15.0.1< 15.0.5529.1000 affected
15.0.1< 15.0.5529.1000 affected
Microsoft Microsoft Word 2016 16.0.1< 16.0.5383.1000 affected
Microsoft SharePoint Server Subscription Edition Language Pack 16.0.0< 16.0.15601.20478 affected
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I. Basic Information for CVE-2023-21716

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:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
Source: CVE Program / CVE List V5
Vulnerability Type
整数溢出或超界折返
Source: CVE Program / CVE List V5
Vulnerability Title
Microsoft Word 安全漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
Microsoft Word是美国微软（Microsoft）公司的一套Office套件中的文字处理软件。 Microsoft Office Word存在安全漏洞。以下产品和版本受到影响：Microsoft Office Online Server,Microsoft Office 2019 for Mac,Microsoft 365 Apps for Enterprise for 64-bit Systems,Microsoft SharePoint Enterprise Server 2016,Micr
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)

Shenlong Deep Dive — AI Deep Analysis

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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 Office 2019 for Mac 16.0.0 ~ 16.70.23021201 -
Microsoft Microsoft Office LTSC 2021 16.0.1 ~ https://aka.ms/OfficeSecurityReleases -
Microsoft Microsoft Office LTSC for Mac 2021 16.0.1 ~ 16.70.23021201 -
Microsoft Microsoft Office Online Server 16.0.1 ~ 16.0.10395.20001 -
Microsoft Microsoft Office Web Apps Server 2013 Service Pack 1 15.0.1 ~ 15.0.5529.1000 -
Microsoft Microsoft SharePoint Enterprise Server 2013 Service Pack 1 15.0.0 ~ 15.0.5529.1000 -
Microsoft Microsoft SharePoint Enterprise Server 2016 16.0.0 ~ 16.0.5383.1000 -
Microsoft Microsoft SharePoint Foundation 2013 Service Pack 1 15.0.0 ~ 15.0.5529.1000 -
Microsoft Microsoft SharePoint Server 2019 16.0.0 ~ 16.0.10395.20001 -
Microsoft Microsoft SharePoint Server Subscription Edition 16.0.0 ~ 16.0.15601.20478 -
Microsoft Microsoft Word 2013 Service Pack 1 15.0.1 ~ 15.0.5529.1000 -
Microsoft Microsoft Word 2013 Service Pack 1 15.0.1 ~ 15.0.5529.1000 -
Microsoft Microsoft Word 2016 16.0.1 ~ 16.0.5383.1000 -
Microsoft SharePoint Server Subscription Edition Language Pack 16.0.0 ~ 16.0.15601.20478 -

II. Public POCs for CVE-2023-21716

# POC Description Source Link Shenlong Link
1 None https://github.com/FeatherStark/CVE-2023-21716 POC Details
2 RTF Crash POC Python 3.11 Windows 10 https://github.com/Xnuvers007/CVE-2023-21716 POC Details
3 A vulnerability within Microsoft Office's wwlib allows attackers to achieve remote code execution with the privileges of the victim that opens a malicious RTF document. The attacker could deliver this file as an email attachment (or other means). https://github.com/gyaansastra/CVE-2023-21716 POC Details
4 Results of retrohunt for files matching YARA rules from https://github.com/AmgdGocha/Detection-Rules/blob/main/CVE-2023-21716.yar https://github.com/mikesxrs/CVE-2023-21716_YARA_Results POC Details
5 Microsoft Word 远程代码执行漏洞 https://github.com/CKevens/CVE-2023-21716-POC POC Details
6 test of exploit for CVE-2023-21716 https://github.com/hv0l/CVE-2023-21716_exploit POC Details
7 POC : CVE-2023-21716 Microsoft Word RTF Font Table Heap Corruption https://github.com/JMousqueton/CVE-2023-21716 POC Details
8 python program to exploit CVE-2023-21716 https://github.com/Lord-of-the-IoT/CVE-2023-21716 POC Details
9 This is an exploit file which is used to check CVE-2021-21716 vulnerability https://github.com/MojithaR/CVE-2023-21716-EXPLOIT.py POC Details
10 Microsoft Word 远程代码执行漏洞 https://github.com/3yujw7njai/CVE-2023-21716-POC POC Details
11 POC CVE 2023-21716 https://github.com/n0s3ns33/poc-cve-2023-21716 POC Details
12 Proof Of Concept for CVE-2023-21716 Microsoft Word Heap Corruption https://github.com/RonF98/CVE-2023-21716-POC POC Details
13 Microsoft Word 远程代码执行漏洞 https://github.com/AiK1d/CVE-2023-21716-POC POC Details
14 None https://github.com/Threekiii/Awesome-POC/blob/master/%E5%85%B6%E4%BB%96%E6%BC%8F%E6%B4%9E/Microsoft%20Word%20%E8%BF%9C%E7%A8%8B%E4%BB%A3%E7%A0%81%E6%89%A7%E8%A1%8C%E6%BC%8F%E6%B4%9E%20CVE-2023-21716.md POC Details
15 Microsoft Word 远程代码执行漏洞 https://github.com/P4x1s/CVE-2023-21716-POC POC Details
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III. Intelligence Information for CVE-2023-21716

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Vendor Advisories for CVE-2023-21716 (1)

Same Patch Batch · Microsoft · 2023-02-14 · 78 CVEs total

CVE-2023-21689 9.8 CRITICAL Microsoft Protected Extensible Authentication Protocol (PEAP) Remote Code Execution Vulner
CVE-2023-21690 9.8 CRITICAL Microsoft Protected Extensible Authentication Protocol (PEAP) Remote Code Execution Vulner
CVE-2023-21692 9.8 CRITICAL Microsoft Protected Extensible Authentication Protocol (PEAP) Remote Code Execution Vulner
CVE-2023-21803 9.8 CRITICAL Windows iSCSI Discovery Service Remote Code Execution Vulnerability
CVE-2023-21685 8.8 HIGH Microsoft WDAC OLE DB provider for SQL Server Remote Code Execution Vulnerability
CVE-2023-21684 8.8 HIGH Microsoft PostScript and PCL6 Class Printer Driver Remote Code Execution Vulnerability
CVE-2023-21706 8.8 HIGH Microsoft Exchange Server Remote Code Execution Vulnerability
CVE-2023-21705 8.8 HIGH Microsoft SQL Server Remote Code Execution Vulnerability
CVE-2023-21707 8.8 HIGH Microsoft Exchange Server Remote Code Execution Vulnerability
CVE-2023-21717 8.8 HIGH Microsoft SharePoint Server Elevation of Privilege Vulnerability
CVE-2023-21529 8.8 HIGH Microsoft Exchange Server Remote Code Execution Vulnerability
CVE-2023-21713 8.8 HIGH Microsoft SQL Server Remote Code Execution Vulnerability
CVE-2023-21798 8.8 HIGH Microsoft ODBC Driver Remote Code Execution Vulnerability
CVE-2023-21799 8.8 HIGH Microsoft WDAC OLE DB provider for SQL Server Remote Code Execution Vulnerability
CVE-2023-21686 8.8 HIGH Microsoft WDAC OLE DB provider for SQL Server Remote Code Execution Vulnerability
CVE-2023-21797 8.8 HIGH Microsoft ODBC Driver Remote Code Execution Vulnerability
CVE-2023-21777 8.7 HIGH Azure App Service on Azure Stack Hub Elevation of Privilege Vulnerability
CVE-2023-23374 8.3 HIGH Microsoft Edge (Chromium-based) Remote Code Execution Vulnerability
CVE-2023-21806 8.2 HIGH Power BI Report Server Spoofing Vulnerability
CVE-2023-21778 8.0 HIGH Microsoft Dynamics Unified Service Desk Remote Code Execution Vulnerability

Showing top 20 of 78 CVEs. View all on vendor page &rarr; →

IV. Related Vulnerabilities

Same product: Microsoft 365 Apps for Enterprise
Same vendor: Microsoft
Same weakness: CWE-190

V. Comments for CVE-2023-21716

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