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    CVE-2025-54900: Excel Heap Overflow — Patch & Mitigations Guide

    Microsoft has published an advisory for CVE-2025-54900, a heap‑based buffer overflow in Microsoft Excel that can allow an attacker to execute code on a victim machine when a crafted spreadsheet is opened — an issue administrators and home users should treat as high priority for patching and...
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    • asr rules cve-2025-54900 defender application guard edr excel security excel vulnerability heap overflow local code execution microsoft advisory office security patch management patch rollout protected view server-side rendering threat intel
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    • Forum: Security Alerts
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    Microsoft Removes Defender Application Guard from Windows 11: What It Means for Users

    In a significant shakeup for enterprise users, Microsoft has officially announced the removal of Defender Application Guard (MDAG) from Windows 11 version 24H2. This feature, primarily used to bolster security within Microsoft Edge by isolating potentially dangerous web content in a virtualized...
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    • defender application guard enterprise security microsoft edge web security windows 11
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    • Forum: Windows News
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