CVE-2026-88209— Microsoft Office SharePoint Spoofing Vulnerability
Quick assessment
Affected
Microsoft Microsoft SharePoint Server Subscription Edition
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.
在 Microsoft Office SharePoint 的网页生成过程中，存在对输入处理不当的问题（跨站脚本攻击）。这使得经过身份验证的攻击者能够在网络上实施欺骗行为。
Possible ATT&CK Techniques 1 AI
T1189 · Drive-by CompromiseAffected Version Matrix 1
| Vendor | Product | Version Range | Status |
|---|---|---|---|
| Microsoft | Microsoft SharePoint Server Subscription Edition | 16.0.0< 16.0.20326.20190 |
affected |
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I. Basic Information for CVE-2026-88209
Vulnerability Information
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Vulnerability Title
Microsoft Office SharePoint Spoofing Vulnerability
Source: CVE Program / CVE List V5
Vulnerability Description
Improper neutralization of input during web page generation ('cross-site scripting') in Microsoft Office SharePoint allows an authorized attacker to perform spoofing over a network.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:U/C:L/I:L/A:N
Source: CVE Program / CVE List V5
Vulnerability Type
在Web页面生成时对输入的转义处理不恰当(跨站脚本)
Source: CVE Program / CVE List V5
Affected Products
| Vendor | Product | Affected Versions | CPE | Subscribe |
|---|---|---|---|---|
| Microsoft | Microsoft SharePoint Server Subscription Edition | 16.0.0 ~ 16.0.20326.20190 | - |
|
II. Public POCs for CVE-2026-88209
| # | POC Description | Source Link | Shenlong Link |
|---|
AI-Generated POC
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Vendor Advisories for CVE-2026-88209 (1)
Same Patch Batch · Microsoft · 2026-10-13 · 1407 CVEs total
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| CVE-2026-70096 | 9.8 CRITICAL | Windows Rich Text Edit Control Remote Code Execution Vulnerability |
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| CVE-2026-70157 | 9.8 CRITICAL | Windows System Information Console Remote Code Execution Vulnerability |
| CVE-2026-83578 | 9.8 CRITICAL | Microsoft PowerShell Remote Code Execution Vulnerability |
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| CVE-2026-96320 | 9.8 CRITICAL | Windows DHCP Server Remote Code Execution Vulnerability |
| CVE-2026-70147 | 9.8 CRITICAL | Microsoft PostScript Printer Driver Remote Code Execution Vulnerability |
| CVE-2026-97016 | 9.8 CRITICAL | Microsoft Office Outlook Remote Code Execution Vulnerability |
| CVE-2026-88102 | 9.8 CRITICAL | Microsoft Failover Cluster Remote Code Execution Vulnerability |
| CVE-2026-96864 | 9.8 CRITICAL | Microsoft Failover Cluster Virtual Driver Remote Code Execution Vulnerability |
| CVE-2026-96909 | 9.8 CRITICAL | Windows BitLocker Remote Code Execution Vulnerability |
| CVE-2026-96113 | 9.8 CRITICAL | Windows Domain Name Service Remote Code Execution Vulnerability |
| CVE-2026-97749 | 9.8 CRITICAL | Microsoft Office Outlook Remote Code Execution Vulnerability |
Showing top 20 of 1407 CVEs. View all on vendor page → →
IV. Related Vulnerabilities
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V. Comments for CVE-2026-88209
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