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Windows Hyper-V Elevation of Privilege Vulnerability

🗓️ 12 May 2026 14:00:00Reported by MicrosoftType 
mscve
 mscve
🔗 msrc.microsoft.com👁 5 Views

A use after free in Windows Hyper-V allows a local attacker to elevate privileges.

Related
Detection
ReporterTitlePublishedViews
Family
ATTACKERKB
CVE-2026-40402
12 May 202616:59
attackerkb
Circl
CVE-2026-40402
12 May 202615:52
circl
CNNVD
Microsoft Hyper-V 资源管理错误漏洞
12 May 202600:00
cnnvd
CVE
CVE-2026-40402
12 May 202616:59
cve
Cvelist
CVE-2026-40402 Windows Hyper-V Elevation of Privilege Vulnerability
12 May 202616:59
cvelist
EUVD
EUVD-2026-29663
12 May 202618:30
euvd
Microsoft KB
May 12, 2026—KB5087420 (OS Build 22631.7079)
12 May 202614:00
mskb
Microsoft KB
May 12, 2026—Hotpatch KB5087424 (OS Build 20348.5074)
12 May 202614:00
mskb
Microsoft KB
May 12, 2026—KB5087545 (OS Build 20348.5139)
12 May 202614:00
mskb
Kaspersky
KLA91040 Multiple vulnerabilities in Microsoft Windows
12 May 202600:00
kaspersky
Rows per page
Vulners
Node
microsoftwindows_11_23h2Range<10.0.22631.7219x64
OR
microsoftwindows_11_23h2Range<10.0.22631.7079x64
OR
microsoftwindows_server_2022Range<10.0.20348.5139
OR
microsoftwindows_server_2022Range<10.0.20348.5074
OR
microsoftwindows_server_2022Range<10.0.20348.5139
OR
microsoftwindows_server_2022Range<10.0.20348.5074

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12 May 2026 14:00Current
5.8Medium risk
Vulners AI Score5.8
CVSS 3.19.3
EPSS0.00332
SSVC
5