Mmastodon TechnologyCybersecurity first seen 3 d ago, last 3 d ago, peak #10

Microsoft Windows Search flaw scores 9.8 on CVSS

Original: 🚨 EUVD-2026-100399 📊 Score: 9.8/10 (CVSS v3.1) 📦 Product: Windows Server 2016 (Server Core installation), Windows 10 Ver

A critical vulnerability, EUVD-2026-100399, has been catalogued affecting Microsoft Windows, including Windows Server 2016 Server Core, Windows 10 Version 1809 and Windows 11 Version 25H2, among more than 15 other versions. The flaw is a use-after-free bug in the Windows Search component, rated 9.8 out of 10 on the CVSS v3.1 scale. The vulnerability was updated in the EU vulnerability database on 13 October 2026, and security teams are urged to patch affected systems.

Why now: A near-maximum severity remote-relevant flaw in widely used Windows components prompts urgent patching discussions.

MicrosoftWindows Server 2016Windows 10Windows 11Windows Search

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Evidence

• 🚨 EUVD-2026-100399 📊 Score: 9.8/10 (CVSS v3.1) 📦 Product: Windows Server 2016 (Server Core installation), Windows 10 Version 1809, Windows 11 Version 25H2 (+15 more) 🏢 Vendor: Microsoft 📅 Updated: 2026-10-13 📝 Use after free in Microsoft Windows Search Component allows an… · EUVD_Bot

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