CVE-2026-100208— Microsoft Office Outlook 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.
微软 Office Outlook 中存在整数溢出或环绕问题，允许未经授权的攻击者在网络上执行代码。
Possible ATT&CK Techniques 2 AI
T1203 · Exploitation for Client Execution T1190 · Exploit Public-Facing Application
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I. Basic Information for CVE-2026-100208
Vulnerability Information
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Vulnerability Title
Microsoft Office Outlook Remote Code Execution Vulnerability
Source: CVE Program / CVE List V5
Vulnerability Description
Integer overflow or wraparound in Microsoft Office Outlook allows an unauthorized attacker to execute code over a network.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:N/AC:H/PR:N/UI:R/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
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 | - |
|
II. Public POCs for CVE-2026-100208
| # | POC Description | Source Link | Shenlong Link |
|---|
AI-Generated POC
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Other References for CVE-2026-100208 (1)
IV. Related Vulnerabilities
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Integer Overflow or Wraparound in GitLab
V. Comments for CVE-2026-100208
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