CVE-2026-96176 · Infrastructure
NO FIX YET
Windows DNS Server leaks memory after it is no longer needed, which an unauthorized attacker can trigger over the network. The result is a denial of service, meaning the DNS service can be made to stall or stop.
first public Nov 10, 2026 · 2 sources
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Windows Server machines running the DNS Server role are exposed to a network attacker. Hosts that only use DNS as a client, or that use a different DNS server, are not affected by the sources given. The sources do not state which Windows versions or configurations are vulnerable.
Not affected if dns-server-role-not-installed, no-dns-server-role
Who cares self-hosted, windows, windows-dns
winver or Get-ComputerInfo and compare against the Microsoft security update that lists CVE-2026-96176Get-WindowsFeature DNSNo fix yet, per the sources.
Missing release of memory after effective lifetime in Windows DNS allows an unauthorized attacker to deny service over a network.
This page as .md · .json · CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
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