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cve-2025-54900

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CVE-2025-54900 is a heap-based buffer overflow vulnerability in Microsoft Excel that can lead to local code execution when a user opens a specially crafted spreadsheet. Microsoft has published a security advisory urging administrators and home users to apply the latest patch as a high priority. The vulnerability affects supported versions of Excel, and exploitation requires user interaction. In addition to patching, layered mitigations such as opening files only from trusted sources and using Microsoft Defender for Office 365 can reduce risk. This tag covers discussions on the advisory, patch deployment, and mitigation strategies for CVE-2025-54900.
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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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    • application guard asr cve-2025-54900 edr excel security excel vulnerability heap overflow local code execution microsoft advisory microsoft patch office security patch management patch rollout protected view server-side rendering threat intel
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    • Forum: Security Alerts
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