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CVE-2026-70105— Microsoft Word Information Disclosure 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Microsoft公司的一款文字处理软件。 Microsoft Office Word 存在输入验证错误漏洞，该漏洞源于输入验证不当，可能导致未经授权的攻击者通过网络披露信息。以下版本受到影响：Microsoft 365 Apps for Enterprise 16.0.1版本、Microsoft Office 2019 19.0.0版本、Microsoft Office 365 for Mac 16.112.26081010之前版本、Microsoft O

CVSS 6.5 · Medium EPSS 0.97% · P61

Possible ATT&CK Techniques 1 AI

T1190 · Exploit Public-Facing Application

Affected Version Matrix 8

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 365 for Mac 1.0.0< 16.112.26081010 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< 16.112.26081010 affected
Microsoft Microsoft Office LTSC for Mac 2024 16.0.0< 16.112.26081010 affected
Microsoft Microsoft Word 2016 16.0.1< 16.0.5565.1000 affected
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I. Basic Information for CVE-2026-70105

Vulnerability Information
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Vulnerability Title
Microsoft Word Information Disclosure Vulnerability
Source: CVE Program / CVE List V5
Vulnerability Description
Improper input validation in Microsoft Office Word allows an unauthorized attacker to disclose information over a network.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:N/A:N
Source: CVE Program / CVE List V5
Vulnerability Type
输入验证不恰当
Source: CVE Program / CVE List V5
Vulnerability Title
Microsoft Office Word 输入验证错误漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
Microsoft Office Word是美国Microsoft公司的一款文字处理软件。 Microsoft Office Word 存在输入验证错误漏洞，该漏洞源于输入验证不当，可能导致未经授权的攻击者通过网络披露信息。以下版本受到影响：Microsoft 365 Apps for Enterprise 16.0.1版本、Microsoft Office 2019 19.0.0版本、Microsoft Office 365 for Mac 16.112.26081010之前版本、Microsoft O
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 ~ 16.112.26081010 -
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 ~ 16.112.26081010 -
Microsoft Microsoft Office LTSC for Mac 2024 16.0.0 ~ 16.112.26081010 -
Microsoft Microsoft Word 2016 16.0.1 ~ 16.0.5565.1000 -

II. Public POCs for CVE-2026-70105

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III. Intelligence Information for CVE-2026-70105

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Vendor Advisories for CVE-2026-70105 (1)

Same Patch Batch · Microsoft · 2026-08-20 · 21 CVEs total

CVE-2026-69555 10.0 CRITICAL Azure Arc Elevation of Privilege Vulnerability
CVE-2026-65801 10.0 CRITICAL Microsoft Exchange Online Elevation of Privilege Vulnerability
CVE-2026-65816 10.0 CRITICAL Azure Arc Elevation of Privilege Vulnerability
CVE-2026-69836 10.0 CRITICAL Microsoft Entra ID Remote Code Execution Vulnerability
CVE-2026-65770 10.0 CRITICAL Azure Managed Instance for Apache Cassandra Remote Code Execution Vulnerability
CVE-2026-68789 9.9 CRITICAL Azure SQL Database Elevation of Privilege Vulnerability
CVE-2026-68782 9.9 CRITICAL Azure SQL Database Elevation of Privilege Vulnerability
CVE-2026-63509 9.9 CRITICAL Microsoft Fabric Elevation of Privilege Vulnerability
CVE-2026-69851 9.9 CRITICAL Microsoft Entra ID Elevation of Privilege Vulnerability
CVE-2026-69400 9.6 CRITICAL Azure Logic Apps Elevation of Privilege Vulnerability
CVE-2026-62834 9.3 CRITICAL Azure Data Factory Elevation of Privilege Vulnerability
CVE-2026-66309 9.1 CRITICAL Azure SQL Database Elevation of Privilege Vulnerability
CVE-2026-66800 8.6 HIGH Azure Data Factory Information Disclosure Vulnerability
CVE-2026-69519 8.6 HIGH Azure Stack HCI Information Disclosure Vulnerability
CVE-2026-69558 8.6 HIGH Microsoft Partner Center Information Disclosure Vulnerability
CVE-2026-69419 8.5 HIGH Azure Data Manager for Energy Remote Code Execution Vulnerability
CVE-2026-69543 8.5 HIGH Azure Virtual Machines Elevation of Privilege Vulnerability
CVE-2026-69855 7.7 HIGH Microsoft Copilot in Azure Information Disclosure Vulnerability
CVE-2026-55013 7.1 HIGH Windows Remote Help Defense Spoofing Vulnerability
CVE-2026-55015 5.5 MEDIUM Microsoft Remote Help Denial of Service Vulnerability

IV. Related Vulnerabilities

Same product: Microsoft 365 Apps for Enterprise
Same vendor: Microsoft
Same weakness: CWE-20

V. Comments for CVE-2026-70105

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