important · Windows DNS
A single unauthenticated DNS packet can execute code on affected Windows DNS servers.
Affects
Windows DNS Server on supported Windows Server releases and the DNS implementation in Windows 10 1607 and 1809.
The packet triggers a use-after-free in DNS processing and reaches the service context without authentication.
Detail and 3 sources
Fixed builds are identified, but the claim has no public exploit or independent reproduction behind it.