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CVE-2026-42831— Microsoft Office Remote Code Execution Vulnerability

CVSS 7.8 · High EPSS 0.06% · P18

Affected Version Matrix 3

VendorProductVersion RangeStatus
MicrosoftMicrosoft Office for Android16.0.1< 16.0.19822.20190affected
MicrosoftMicrosoft Office LTSC for Mac 202116.0.1< 16.109.26051019affected
MicrosoftMicrosoft Office LTSC for Mac 202416.0.0< 16.109.26051019affected
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I. Basic Information for CVE-2026-42831

Vulnerability Information
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Vulnerability Title
Microsoft Office Remote Code Execution Vulnerability
Source: NVD (National Vulnerability Database)
Vulnerability Description
Heap-based buffer overflow in Microsoft Office allows an unauthorized attacker to execute code locally.
Source: NVD (National Vulnerability Database)
CVSS Information
CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
Source: NVD (National Vulnerability Database)
Vulnerability Type
堆缓冲区溢出
Source: NVD (National Vulnerability Database)
Vulnerability Title
Microsoft Office 安全漏洞
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存在安全漏洞。攻击者利用该漏洞可以远程执行代码。以下产品和版本受到影响：Microsoft Office LTSC for Mac 2021,Microsoft Office for Android,Microsoft Office LTSC for Mac 2024。
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

VendorProductAffected VersionsCPESubscribe
MicrosoftMicrosoft Office for Android 16.0.1 ~ 16.0.19822.20190 -
MicrosoftMicrosoft Office LTSC for Mac 2021 16.0.1 ~ 16.109.26051019 -
MicrosoftMicrosoft Office LTSC for Mac 2024 16.0.0 ~ 16.109.26051019 -

II. Public POCs for CVE-2026-42831

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III. Intelligence Information for CVE-2026-42831

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Same Patch Batch · Microsoft · 2026-05-12 · 125 CVEs total

CVE-2026-428989.9 CRITICALMicrosoft Dynamics 365 On-Premises Remote Code Execution Vulnerability
CVE-2026-428239.9 CRITICALAzure Logic Apps Elevation of Privilege Vulnerability
CVE-2026-410899.8 CRITICALWindows Netlogon Remote Code Execution Vulnerability
CVE-2026-410969.8 CRITICALWindows DNS Client Remote Code Execution Vulnerability
CVE-2026-403799.3 CRITICALAzure Entra ID Spoofing Vulnerability
CVE-2026-404029.3 CRITICALWindows Hyper-V Elevation of Privilege Vulnerability
CVE-2026-428339.1 CRITICALMicrosoft Dynamics 365 On-Premises Remote Code Execution Vulnerability
CVE-2026-331179.1 CRITICALAzure SDK for Java Security Feature Bypass Vulnerability
CVE-2026-411039.1 CRITICALMicrosoft SSO Plugin for Jira & Confluence Elevation of Privilege Vulnerability
CVE-2026-416138.8 HIGHVisual Studio Code Elevation of Privilege Vulnerability
CVE-2026-411098.8 HIGHGitHub Copilot and Visual Studio Code Security Feature Bypass Vulnerability
CVE-2026-354368.8 HIGHMicrosoft Office Click-To-Run Elevation of Privilege Vulnerability
CVE-2026-403578.8 HIGHMicrosoft SharePoint Server Remote Code Execution Vulnerability
CVE-2026-404208.8 HIGHMicrosoft Office Click-To-Run Elevation of Privilege Vulnerability
CVE-2026-404038.8 HIGHWindows Graphics Component Remote Code Execution Vulnerability
CVE-2026-403708.8 HIGHSQL Server Remote Code Execution Vulnerability
CVE-2026-410868.8 HIGHWindows Admin Center in Azure Portal Elevation of Privilege Vulnerability
CVE-2026-331108.8 HIGHMicrosoft SharePoint Server Remote Code Execution Vulnerability
CVE-2026-343298.8 HIGHMicrosoft Message Queuing (MSMQ) Remote Code Execution Vulnerability
CVE-2026-354398.8 HIGHMicrosoft SharePoint Server Remote Code Execution Vulnerability

Showing top 20 of 125 CVEs. View all on vendor page &rarr; →

IV. Related Vulnerabilities

Same product: Microsoft Office for Android
Same vendor: Microsoft
Same weakness: CWE-122

V. Comments for CVE-2026-42831

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