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Security Advisory: Windows DNS Server Vulnerability

ID: ac61eb53-23b9-51a0-af76-894a2487c1c3

STIX ID: report--ac61eb53-23b9-51a0-af76-894a2487c1c3

Feed Name: Zscaler Security Research Blog

Threat Score
78/100

Date Published: 2025-04-02

Date Updated: 2026-05-01

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**Executive Summary:** Microsoft released security updates for CVE-2020-1350, a critical (CVSS 10.0), wormable remote code execution vulnerability in Windows DNS Server affecting many Windows Server releases; administrators should apply the update or the provided registry workaround immediately, and Zscaler has added detection signatures while Microsoft reported no active exploitation at the time of the advisory.

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