CVE-2026-45471— 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 Word是美国微软（Microsoft）开源的一款文字处理软件。 Microsoft Office Word存在安全漏洞，该漏洞源于不可信指针取消引用，可能导致未经授权的攻击者在本地执行代码。
Possible ATT&CK Techniques 1 AI
T1203 · Exploitation for Client ExecutionAffected Version Matrix 11
| Vendor | Product | Version Range | Status |
|---|---|---|---|
| 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 365 for Mac | 1.0.0< 16.110.26061317 |
affected |
| Microsoft | Microsoft Office LTSC 2021 | 16.0.1< https://aka.ms/OfficeSecurityReleases |
affected |
| Microsoft | Microsoft Office LTSC 2024 | 16.0.0< https://aka.ms/OfficeSecurityReleases |
affected |
| Microsoft | Microsoft Office LTSC for Mac 2021 | 16.0.1< 16.110.26061317 |
affected |
| Microsoft | Microsoft Office LTSC for Mac 2024 | 16.0.0< 16.110.26061317 |
affected |
| Microsoft | Microsoft SharePoint Enterprise Server 2016 | 16.0.0< 16.0.5556.1005 |
affected |
| Microsoft | Microsoft SharePoint Server 2019 | 16.0.0< 16.0.10417.20153 |
affected |
| Microsoft | Microsoft SharePoint Server Subscription Edition | 16.0.0< 16.0.19725.20384 |
affected |
| Microsoft | Microsoft Word 2016 | 16.0.1< 16.0.5556.1000 |
affected |
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I. Basic Information for CVE-2026-45471
Vulnerability Information
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Vulnerability Title
Microsoft Word Remote Code Execution Vulnerability
Source: CVE Program / CVE List V5
Vulnerability Description
Untrusted pointer dereference in Microsoft Office Word allows an unauthorized attacker to execute code locally.
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
非可信指针解引用
Source: CVE Program / CVE List V5
Vulnerability Title
Microsoft Office Word 安全漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
Microsoft Office Word是美国微软（Microsoft）开源的一款文字处理软件。 Microsoft Office Word存在安全漏洞，该漏洞源于不可信指针取消引用，可能导致未经授权的攻击者在本地执行代码。
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 Office 365 for Mac | 1.0.0 ~ 16.110.26061317 | - |
|
| Microsoft | Microsoft Office LTSC 2021 | 16.0.1 ~ https://aka.ms/OfficeSecurityReleases | - |
|
| Microsoft | Microsoft Office LTSC 2024 | 16.0.0 ~ https://aka.ms/OfficeSecurityReleases | - |
|
| Microsoft | Microsoft Office LTSC for Mac 2021 | 16.0.1 ~ 16.110.26061317 | - |
|
| Microsoft | Microsoft Office LTSC for Mac 2024 | 16.0.0 ~ 16.110.26061317 | - |
|
| Microsoft | Microsoft SharePoint Enterprise Server 2016 | 16.0.0 ~ 16.0.5556.1005 | - |
|
| Microsoft | Microsoft SharePoint Server 2019 | 16.0.0 ~ 16.0.10417.20153 | - |
|
| Microsoft | Microsoft SharePoint Server Subscription Edition | 16.0.0 ~ 16.0.19725.20384 | - |
|
| Microsoft | Microsoft Word 2016 | 16.0.1 ~ 16.0.5556.1000 | - |
|
II. Public POCs for CVE-2026-45471
| # | POC Description | Source Link | Shenlong Link |
|---|
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Vendor Advisories for CVE-2026-45471 (1)
Same Patch Batch · Microsoft · 2026-06-09 · 200 CVEs total
| CVE-2026-47643 | 9.8 CRITICAL | Azure Stack Edge Remote Code Execution Vulnerability |
| CVE-2026-26142 | 9.8 CRITICAL | Nuance PowerScribe Remote Code Execution Vulnerability |
| CVE-2026-47291 | 9.8 CRITICAL | HTTP.sys Remote Code Execution Vulnerability |
| CVE-2026-45657 | 9.8 CRITICAL | Windows Kernel Remote Code Execution Vulnerability |
| CVE-2026-44815 | 9.8 CRITICAL | DHCP Client Service Remote Code Execution Vulnerability |
| CVE-2026-47281 | 9.6 CRITICAL | Visual Studio Code Elevation of Privilege Vulnerability |
| CVE-2026-42904 | 9.6 CRITICAL | Windows TCP/IP Elevation of Privilege Vulnerability |
| CVE-2026-45602 | 9.1 CRITICAL | Windows Dynamic Host Configuration Protocol (DHCP) Tampering Vulnerability |
| CVE-2026-32193 | 8.8 HIGH | Azure Kubernetes Service (AKS) Remote Code Execution Vulnerability |
| CVE-2026-45484 | 8.8 HIGH | Microsoft SharePoint Elevation of Privilege Vulnerability |
| CVE-2026-40371 | 8.8 HIGH | Microsoft Dynamics 365 (on-premises) Elevation of Privilege Vulnerability |
| CVE-2026-47653 | 8.8 HIGH | Remote Desktop Client Remote Code Execution Vulnerability |
| CVE-2026-47289 | 8.8 HIGH | Remote Desktop Client Remote Code Execution Vulnerability |
| CVE-2026-45648 | 8.8 HIGH | Windows Active Directory Domain Services Remote Code Execution Vulnerability |
| CVE-2026-45504 | 8.8 HIGH | Microsoft Exchange Server Elevation of Privilege Vulnerability |
| CVE-2026-42985 | 8.8 HIGH | Remote Desktop Client Remote Code Execution Vulnerability |
| CVE-2026-45607 | 8.4 HIGH | Windows Hyper-V Remote Code Execution Vulnerability |
| CVE-2026-41098 | 8.4 HIGH | Azure Stack Edge Spoofing Vulnerability |
| CVE-2026-47635 | 8.4 HIGH | Microsoft Outlook and Word Remote Code Execution Vulnerability |
| CVE-2026-45641 | 8.4 HIGH | Windows Hyper-V Remote Code Execution Vulnerability |
Showing top 20 of 200 CVEs. View all on vendor page → →
IV. Related Vulnerabilities
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-
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Same weakness: CWE-822
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V. Comments for CVE-2026-45471
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