CVE-2026-20949— Microsoft Excel Security Feature Bypass Vulnerability
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I. Basic Information for CVE-2026-20949
Vulnerability Information
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Vulnerability Title
Microsoft Excel Security Feature Bypass Vulnerability
Source: NVD (National Vulnerability Database)
Vulnerability Description
Improper access control in Microsoft Office Excel allows an unauthorized attacker to bypass a security feature 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
访问控制不恰当
Source: NVD (National Vulnerability Database)
Vulnerability Title
Microsoft Excel 访问控制错误漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
Microsoft Excel是美国微软（Microsoft）公司的一款Office套件中的电子表格处理软件。 Microsoft Excel存在访问控制错误漏洞。攻击者利用该漏洞可以绕过某些功能。以下产品和版本受到影响：Microsoft 365 Apps for Enterprise for 32-bit Systems,Microsoft 365 Apps for Enterprise for 64-bit Systems,Microsoft Office LTSC for Mac 2021,Mic
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 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 ~ 16.105.26011018 | - | |
| Microsoft | Microsoft Office LTSC for Mac 2024 | 16.0.0 ~ 16.105.26011018 | - |
II. Public POCs for CVE-2026-20949
| # | POC Description | Source Link | Shenlong Link |
|---|
AI-Generated POCPremium
No public POC found.
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Same Patch Batch · Microsoft · 2026-01-13 · 112 CVEs total
| CVE-2026-20963 | 9.8 CRITICAL | Microsoft SharePoint Remote Code Execution Vulnerability |
| CVE-2026-20947 | 8.8 HIGH | Microsoft SharePoint Server Remote Code Execution Vulnerability |
| CVE-2026-20868 | 8.8 HIGH | Windows Routing and Remote Access Service (RRAS) Remote Code Execution Vulnerability |
| CVE-2026-20952 | 8.4 HIGH | Microsoft Office Remote Code Execution Vulnerability |
| CVE-2026-20953 | 8.4 HIGH | Microsoft Office Remote Code Execution Vulnerability |
| CVE-2026-20944 | 8.4 HIGH | Microsoft Word Remote Code Execution Vulnerability |
| CVE-2026-20856 | 8.1 HIGH | Windows Server Update Service (WSUS) Remote Code Execution Vulnerability |
| CVE-2026-20931 | 8.0 HIGH | Windows Telephony Service Elevation of Privilege Vulnerability |
| CVE-2026-20858 | 7.8 HIGH | Windows Management Services Elevation of Privilege Vulnerability |
| CVE-2026-21224 | 7.8 HIGH | Azure Connected Machine Agent Elevation of Privilege Vulnerability |
| CVE-2026-20837 | 7.8 HIGH | Windows Media Remote Code Execution Vulnerability |
| CVE-2026-20956 | 7.8 HIGH | Microsoft Excel Remote Code Execution Vulnerability |
| CVE-2026-20955 | 7.8 HIGH | Microsoft Excel Remote Code Execution Vulnerability |
| CVE-2026-20840 | 7.8 HIGH | Windows NTFS Remote Code Execution Vulnerability |
| CVE-2026-20951 | 7.8 HIGH | Microsoft SharePoint Server Remote Code Execution Vulnerability |
| CVE-2026-20946 | 7.8 HIGH | Microsoft Excel Remote Code Execution Vulnerability |
| CVE-2026-20857 | 7.8 HIGH | Windows Cloud Files Mini Filter Driver Elevation of Privilege Vulnerability |
| CVE-2026-20918 | 7.8 HIGH | Windows Management Services Elevation of Privilege Vulnerability |
| CVE-2026-20923 | 7.8 HIGH | Windows Management Services Elevation of Privilege Vulnerability |
| CVE-2026-20920 | 7.8 HIGH | Win32k Elevation of Privilege Vulnerability |
Showing top 20 of 112 CVEs. View all on vendor page → →
IV. Related Vulnerabilities
Same product: Microsoft 365 Apps for Enterprise
- CVE-2026-33115
Microsoft Word Remote Code Execution Vulnerability - CVE-2026-33114
Microsoft Word Remote Code Execution Vulnerability - CVE-2026-32199
Microsoft Excel Remote Code Execution Vulnerability - CVE-2026-32200
Microsoft PowerPoint Remote Code Execution Vulnerability - CVE-2026-32198
Microsoft Excel Remote Code Execution Vulnerability
Same vendor: Microsoft
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Azure DevOps Information Disclosure Vulnerability - CVE-2026-35428
Azure Cloud Shell Spoofing Vulnerability - CVE-2026-35435
Azure AI Foundry Elevation of Privilege Vulnerability - CVE-2026-34327
Microsoft Partner Center Spoofing Vulnerability - CVE-2026-33844
Azure Managed Instance for Apache Cassandra Remote Code Exec
Same weakness: CWE-284
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V. Comments for CVE-2026-20949
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