CVE-2026-42834— Windows Admin Center in Azure Portal Elevation of Privilege Vulnerability
Quick assessment
Affected
Microsoft Windows Admin Center in Azure Portal
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 Azure Portal Windows Admin Center是美国微软（Microsoft）公司的一个集成于Azure Portal中的Windows服务器与混合云管理平台。 Microsoft Azure Portal Windows Admin Center存在后置链接漏洞，该漏洞源于文件访问前链接解析不当，可能导致授权攻击者本地提升权限。
Possible ATT&CK Techniques 2 AI
T1528 · Steal Application Access Token T1068 · Exploitation for Privilege EscalationAffected Version Matrix 1
| Vendor | Product | Version Range | Status |
|---|---|---|---|
| Microsoft | Windows Admin Center in Azure Portal | 1.0< 0.72.0.0. |
affected |
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I. Basic Information for CVE-2026-42834
Vulnerability Information
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Vulnerability Title
Windows Admin Center in Azure Portal Elevation of Privilege Vulnerability
Source: CVE Program / CVE List V5
Vulnerability Description
Improper access control in Windows Admin Center allows an authorized attacker to elevate privileges over a network.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
Source: CVE Program / CVE List V5
Vulnerability Type
在文件访问前对链接解析不恰当(链接跟随)
Source: CVE Program / CVE List V5
Vulnerability Title
Microsoft Azure Portal Windows Admin Center 后置链接漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
Microsoft Azure Portal Windows Admin Center是美国微软（Microsoft）公司的一个集成于Azure Portal中的Windows服务器与混合云管理平台。 Microsoft Azure Portal Windows Admin Center存在后置链接漏洞，该漏洞源于文件访问前链接解析不当，可能导致授权攻击者本地提升权限。
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 | Windows Admin Center in Azure Portal | 1.0 ~ 0.72.0.0. | - |
|
II. Public POCs for CVE-2026-42834
| # | POC Description | Source Link | Shenlong Link |
|---|
AI-Generated POC
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Vendor Advisories for CVE-2026-42834 (1)
Same Patch Batch · Microsoft · 2026-05-20 · 4 CVEs total
| CVE-2026-45584 | 8.1 HIGH | Microsoft Defender Remote Code Execution Vulnerability |
| CVE-2026-41091 | 7.8 HIGH | Microsoft Defender Elevation of Privilege Vulnerability |
| CVE-2026-45498 | 4.0 MEDIUM | Microsoft Defender Denial of Service Vulnerability |
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V. Comments for CVE-2026-42834
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