CVE-2026-21527— Microsoft Exchange Server Spoofing Vulnerability
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I. Basic Information for CVE-2026-21527
Vulnerability Information
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Vulnerability Title
Microsoft Exchange Server Spoofing Vulnerability
Source: NVD (National Vulnerability Database)
Vulnerability Description
User interface (ui) misrepresentation of critical information in Microsoft Exchange Server allows an unauthorized attacker to perform spoofing over a network.
Source: NVD (National Vulnerability Database)
CVSS Information
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:N
Source: NVD (National Vulnerability Database)
Vulnerability Type
关键信息的UI错误表达
Source: NVD (National Vulnerability Database)
Vulnerability Title
Microsoft Exchange Server 安全漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
Microsoft Exchange Server是美国微软（Microsoft）公司的一套电子邮件服务程序。它提供邮件存取、储存、转发，语音邮件，邮件过滤筛选等功能。 Microsoft Exchange Server存在安全漏洞。攻击者利用该漏洞执行欺骗攻击。以下产品和版本受到影响：Microsoft Exchange Server Subscription Edition RTM,Microsoft Exchange Server 2016 Cumulative Update 23,Microsof
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 Exchange Server 2016 Cumulative Update 23 | 15.01.0.0 ~ 15.01.2507.066 | - | |
| Microsoft | Microsoft Exchange Server 2019 Cumulative Update 14 | 15.02.0.0 ~ 15.02.1544.039 | - | |
| Microsoft | Microsoft Exchange Server 2019 Cumulative Update 15 | 15.02.0.0 ~ 15.02.1748.043 | - | |
| Microsoft | Microsoft Exchange Server Subscription Edition RTM | 15.02.0.0 ~ 15.02.2562.037 | - |
II. Public POCs for CVE-2026-21527
| # | POC Description | Source Link | Shenlong Link |
|---|
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Same Patch Batch · Microsoft · 2026-02-10 · 54 CVEs total
| CVE-2026-21531 | 9.8 CRITICAL | Azure SDK for Python Remote Code Execution Vulnerability |
| CVE-2026-21518 | 8.8 HIGH | GitHub Copilot and Visual Studio Code Security Feature Bypass Vulnerability |
| CVE-2026-21255 | 8.8 HIGH | Windows Hyper-V Security Feature Bypass Vulnerability |
| CVE-2026-21256 | 8.8 HIGH | GitHub Copilot and Visual Studio Remote Code Execution Vulnerability |
| CVE-2026-21516 | 8.8 HIGH | GitHub Copilot for Jetbrains Remote Code Execution Vulnerability |
| CVE-2026-21513 | 8.8 HIGH | MSHTML Framework Security Feature Bypass Vulnerability |
| CVE-2026-21510 | 8.8 HIGH | Windows Shell Security Feature Bypass Vulnerability |
| CVE-2026-21537 | 8.8 HIGH | Microsoft Defender for Endpoint Linux Extension Remote Code Execution Vulnerability |
| CVE-2026-21228 | 8.1 HIGH | Azure Local Remote Code Execution Vulnerability |
| CVE-2026-21257 | 8.0 HIGH | GitHub Copilot and Visual Studio Elevation of Privilege Vulnerability |
| CVE-2026-21523 | 8.0 HIGH | GitHub Copilot and Visual Studio Code Remote Code Execution Vulnerability |
| CVE-2026-21229 | 8.0 HIGH | Power BI Remote Code Execution Vulnerability |
| CVE-2026-21240 | 7.8 HIGH | Windows HTTP.sys Elevation of Privilege Vulnerability |
| CVE-2026-21514 | 7.8 HIGH | Microsoft Word Security Feature Bypass Vulnerability |
| CVE-2026-20841 | 7.8 HIGH | Windows Notepad App Remote Code Execution Vulnerability |
| CVE-2026-21533 | 7.8 HIGH | Windows Remote Desktop Services Elevation of Privilege Vulnerability |
| CVE-2026-21236 | 7.8 HIGH | Windows Ancillary Function Driver for WinSock Elevation of Privilege Vulnerability |
| CVE-2026-21246 | 7.8 HIGH | Windows Graphics Component Elevation of Privilege Vulnerability |
| CVE-2026-21259 | 7.8 HIGH | Microsoft Excel Elevation of Privilege Vulnerability |
| CVE-2026-21519 | 7.8 HIGH | Desktop Window Manager Elevation of Privilege Vulnerability |
Showing top 20 of 54 CVEs. View all on vendor page → →
IV. Related Vulnerabilities
Same product: Microsoft Exchange Server 2016 Cumulative Update 23
- CVE-2025-64666
Microsoft Exchange Server Elevation of Privilege Vulnerabili - CVE-2025-64667
Microsoft Exchange Server Spoofing Vulnerability - CVE-2025-59248
Microsoft Exchange Server Spoofing Vulnerability - CVE-2025-59249
Microsoft Exchange Server Elevation of Privilege Vulnerabili - CVE-2025-53782
Microsoft Exchange Server Elevation of Privilege Vulnerabili
Same vendor: Microsoft
- CVE-2026-42826
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-451
- CVE-2026-35371
uutils coreutils id Misleading Identity Reporting in Pretty - CVE-2026-33118
Microsoft Edge (Chromium-based) Spoofing Vulnerability - CVE-2026-33119
Microsoft Edge (Chromium-based) for Android Spoofing Vulnera - CVE-2026-32971
OpenClaw < 2026.3.11 - Node-Host Approval UI Mismatch Allows - CVE-2026-0385
Microsoft Edge (Chromium-based) for Android Spoofing Vulnera
V. Comments for CVE-2026-21527
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