MEDIUM 5.9 NVD

CVE-2026-78523

Use after free in Windows DNS allows an unauthorized attacker to deny service over a network.

Affected Products

microsoft/windows_10_1607
microsoft/windows_10_1809
microsoft/windows_server_2012
microsoft/windows_server_2016
microsoft/windows_server_2019
microsoft/windows_server_2022
microsoft/windows_server_2025

References

https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-78523

Published: 2026-09-08 · Source: NVD · Feed updated: 2026-09-11

This medium severity vulnerability with a CVSS score of 5.9 was published on 2026-09-08 via NVD. Affected: microsoft/windows_10_1607, microsoft/windows_10_1809, microsoft/windows_server_2012 and 4 more.

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