CVE-2026-88218 · Runtime
NO FIX YET
A double free bug in the Windows DNS server lets an unauthorized attacker send crafted requests over the network. A successful attack can execute code on the affected server.
first public Nov 10, 2026 · 2 sources
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Windows Server machines running the DNS Server role are the likely target; the CVSS vector is network, no authentication, no user interaction. Affected versions and KBs are not yet confirmed from Microsoft's advisory. Machines without the DNS Server role are probably not exposed, but this is unconfirmed.
Who cares dns-server, network-reachable, windows, windows-server
Get-WindowsFeature DNS (Installed = yes means the DNS Server role is present, and domain controllers often run it)No fix yet, per the sources.
Double free in Windows DNS allows an unauthorized attacker to execute code over a network.
This page as .md · .json · CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
NVD data is provided by NIST and is public domain. Posts quoted belong to their authors.
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