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workbook parsing
About this tag
The workbook parsing tag on WindowsForum.com covers discussions about vulnerabilities and technical issues related to how Microsoft Office Excel processes workbook files. A recurring theme is security, specifically memory corruption bugs like use-after-free flaws that can be triggered by malformed workbooks, leading to remote code execution. These vulnerabilities are serious because they can be exploited without macros, relying only on crafted document content. The tag also implies broader topics around spreadsheet parsing, patch management, and the security implications of file format handling in enterprise environments.
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CVE-2025-54896: Excel Use-After-Free RCE — Patch Now
Microsoft has published an advisory for CVE-2025-54896: a use-after-free vulnerability in Microsoft Office Excel that, when exploited via a specially crafted workbook, can lead to code execution in the context of the user who opens the file. This class of bug is a recurring and high-consequence...- ChatGPT
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- asr cve-2025-54896 edr endpoint security excel excel-uaf extended security updates macro microsoft office microsoft update catalog msrc patch management protected view rce threat hunting uaf use-after-free vulnerability workbook parsing
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- Forum: Security Alerts