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CVE-2025-27489— Azure Local Elevation of Privilege Vulnerability

Quick assessment

Affected
Microsoft Azure Stack HCI OS
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是美国微软（Microsoft）公司的一套开放的企业级云计算平台。 Microsoft Azure存在输入验证错误漏洞。攻击者利用该漏洞可以提升权限。以下产品和版本受到影响：Azure Stack HCI OS 22H2,Azure Stack HCI OS 23H2。

CVSS 7.8 · High EPSS 0.61% · P47

Affected Version Matrix 2

VendorProduct Version RangeStatus
Microsoft Azure Stack HCI OS 10.0.25398.0< 10.0.25398.1486 affected
Microsoft Azure Stack OS HCI 10.0.20349.0< 10.0.20348.3328 affected
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I. Basic Information for CVE-2025-27489

Vulnerability Information
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Vulnerability Title
Azure Local Elevation of Privilege Vulnerability
Source: CVE Program / CVE List V5
Vulnerability Description
Improper input validation in Azure Local allows an authorized attacker to elevate privileges locally.
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
输入验证不恰当
Source: CVE Program / CVE List V5
Vulnerability Title
Microsoft Azure 输入验证错误漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
Microsoft Azure是美国微软（Microsoft）公司的一套开放的企业级云计算平台。 Microsoft Azure存在输入验证错误漏洞。攻击者利用该漏洞可以提升权限。以下产品和版本受到影响：Azure Stack HCI OS 22H2,Azure Stack HCI OS 23H2。
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 Azure Stack HCI OS 10.0.25398.0 ~ 10.0.25398.1486 -
Microsoft Azure Stack OS HCI 10.0.20349.0 ~ 10.0.20348.3328 -

II. Public POCs for CVE-2025-27489

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III. Intelligence Information for CVE-2025-27489

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Same Patch Batch · Microsoft · 2025-04-08 · 119 CVEs total

CVE-2025-21221 8.8 HIGH Windows Telephony Service Remote Code Execution Vulnerability
CVE-2025-21222 8.8 HIGH Windows Telephony Service Remote Code Execution Vulnerability
CVE-2025-26669 8.8 HIGH Windows Routing and Remote Access Service (RRAS) Information Disclosure Vulnerability
CVE-2025-27477 8.8 HIGH Windows Telephony Service Remote Code Execution Vulnerability
CVE-2025-27740 8.8 HIGH Active Directory Certificate Services Elevation of Privilege Vulnerability
CVE-2025-26647 8.8 HIGH Windows Kerberos Elevation of Privilege Vulnerability
CVE-2025-21205 8.8 HIGH Windows Telephony Service Remote Code Execution Vulnerability
CVE-2025-29794 8.8 HIGH Microsoft SharePoint Remote Code Execution Vulnerability
CVE-2025-27481 8.8 HIGH Windows Telephony Service Remote Code Execution Vulnerability
CVE-2025-27737 8.6 HIGH Windows Security Zone Mapping Security Feature Bypass Vulnerability
CVE-2025-26678 8.4 HIGH Windows Defender Application Control Security Feature Bypass Vulnerability
CVE-2025-26663 8.1 HIGH Windows Lightweight Directory Access Protocol (LDAP) Remote Code Execution Vulnerability
CVE-2025-27482 8.1 HIGH Windows Remote Desktop Services Remote Code Execution Vulnerability
CVE-2025-27480 8.1 HIGH Windows Remote Desktop Services Remote Code Execution Vulnerability
CVE-2025-26670 8.1 HIGH Lightweight Directory Access Protocol (LDAP) Client Remote Code Execution Vulnerability
CVE-2025-26671 8.1 HIGH Windows Remote Desktop Services Remote Code Execution Vulnerability
CVE-2025-27487 8.0 HIGH Remote Desktop Client Remote Code Execution Vulnerability
CVE-2025-24073 7.8 HIGH Microsoft DWM Core Library Elevation of Privilege Vulnerability
CVE-2025-26674 7.8 HIGH Windows Media Remote Code Execution Vulnerability
CVE-2025-24074 7.8 HIGH Microsoft DWM Core Library Elevation of Privilege Vulnerability

Showing top 20 of 119 CVEs. View all on vendor page &rarr; →

IV. Related Vulnerabilities

Same product: Azure Stack HCI OS
Same vendor: Microsoft
Same weakness: CWE-20

V. Comments for CVE-2025-27489

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