Summary
Impact: Elevation of Privilege. Microsoft rating: Important. Not known to be exploited — Exploitation Less Likely. Customer action: Required.
Details
What privileges would an attacker gain by successfully exploiting this vulnerability?
An attacker who successfully exploited this vulnerability could load a non-Microsoft DLL into an enclave, potentially leading to code execution within the context of the target enclave.
Are the updates for Windows 10 for x64-based Systems and Windows 10 for 32-bit Systems currently available?
Yes. As of April 9, 2025, the security update (5055547) for Windows 10 for x64-based Systems and Windows 10 for 32-bit Systems are available. Customers running Windows 10 should ensure the update is installed to be protected from this vulnerability.
Security updates
10.0.20348.3328 — https://support.microsoft.com/help/5055526
10.0.25398.1486 — https://learn.microsoft.com/en-us/azure/azure-local/release-information-23h2?view=azloc-2503
Vulnerabilities 1
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High 7.8
Azure Local Elevation of Privilege Vulnerability
Improper input validation in Azure Local allows an authorized attacker to elevate privileges locally.
Revision history
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#2
The security updates for Windows 10 for 32-bit Systems and Windows 10 for x64-based Systems are now available. See the Security Updates table for more information.
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#1
Information published.
References
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CVE-2025-27489 Azure Local Elevation of Privilege Vulnerability - HTML
https://msrc.microsoft.com/update-guide/vulnerability/CVE-2025-27489
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Microsoft Exploitability Index
https://www.microsoft.com/en-us/msrc/exploitability-index?rtc=1
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Microsoft Support Lifecycle
https://support.microsoft.com/lifecycle
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Common Vulnerability Scoring System
https://www.first.org/cvss