Summary
Impact: Elevation of Privilege. Microsoft rating: Important. Not known to be exploited — Exploitation Less Likely. Customer action: Required.
Details
How could an attacker exploit this vulnerability?
An authenticated attacker with low-privileged access to Windows Admin Center could send a specially crafted request over the network. Exploitation requires a gateway administrator to subsequently perform a VM conversion operation. Successful exploitation could allow the attacker to execute code on the gateway with that administrator's privileges.
Security updates
2.1.36 — https://microsoft.visualstudio.com/WindowsAdminCenter/_artifacts/feed/WindowsAdminCenterExtensionNugetUnique/NuGet/msft.sme.vm-conversion/overview/2.1.36
Vulnerabilities 1
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High 8.0
Windows Admin Center Elevation of Privilege Vulnerability
Improper authorization in Windows Admin Center allows an authorized attacker to elevate privileges over a network.
Revision history
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#1
Information published.
References
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CVE-2026-122988 Windows Admin Center Elevation of Privilege Vulnerability - HTML
https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-122988
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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