WINDOWS 10 1809 · CVE-2026-97002 · Infrastructure
FIX → 10.0.17763.9487 · 10.0.19044.7846 · 10.0.19045.7846 · 10.0.22631.7711 +1
Out-of-bounds read (CWE-125) in the Windows Hyper-V virtual switch driver (VMSwitch). Microsoft's CVSS 7.5 vector is local, high complexity, high privileges required, scope changed. Not known to be exploited; no public PoC found. Microsoft's own page (MSRC) could not be fetched, so build numbers come from a secondary site mirroring the CVE record.
first public Nov 10, 2026 · 2 sources
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Windows machines with the Hyper-V role and a virtual switch (Hyper-V hosts, and clients with Hyper-V enabled) on the Windows 10 and 11 builds listed. The attacker needs local access with high privileges, so it matters most on shared or multi-tenant Hyper-V hosts. Machines without Hyper-V, or already patched to the listed builds, can skip it.
Not affected if hyper-v-disabled, patched
Who cares hyper-v, local, privilege-escalation, windows
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Out-of-bounds read in Windows VMSwitch allows an authorized attacker to elevate privileges locally.
This page as .md · .json · CVSS:3.1/AV:L/AC:H/PR:H/UI:N/S:C/C:H/I:H/A:H
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Upgrade to 10.0.17763.9487 · 10.0.19044.7846 · 10.0.19045.7846 · 10.0.22631.7711 +1
10.0.17763.9487; Win10 21H2 10.0.19044.7846; Win10 22H2 10.0.19045.7846; Win11 23H2 10.0.22631.7711; Win11 24H2 10.0.26100.9974