Mmastodon TechnologyCybersecurity first seen 2 d ago, last 2 d ago, peak #1

New Microsoft vulnerability hits Windows 11 and Server 2025

Original: 🚨 EUVD-2026-99171 📊 Score: 7.0/10 (CVSS v3.1) 📦 Product: Windows 11 version 26H1, Windows 11 Version 26H2, Windows Serve

A newly catalogued vulnerability, EUVD-2026-99171, carries a CVSS v3.1 score of 7.0 and affects Windows 11 versions 26H1 and 26H2, Windows Server 2025 and other Microsoft products. The flaw is a use-after-free bug in the Windows Search Component that allows an authorized attacker to elevate privileges. The advisory was updated on 13 October 2026.

Why now: Security teams are tracking a fresh high-severity Microsoft privilege elevation flaw affecting widely deployed Windows versions.

MicrosoftWindows 11Windows Server 2025Windows Search Component

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Evidence

• 🚨 EUVD-2026-99171 📊 Score: 7.0/10 (CVSS v3.1) 📦 Product: Windows 11 version 26H1, Windows 11 Version 26H2, Windows Server 2025 (+3 more) 🏢 Vendor: Microsoft 📅 Updated: 2026-10-13 📝 Use after free in Microsoft Windows Search Component allows an authorized attacker to elevate… · EUVD_Bot

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