CVSS VectorNVD
CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
Lifecycle Timeline
1DescriptionNVD
Use after free in Microsoft Office Excel allows an unauthorized attacker to execute code locally.
AnalysisAI
Use-after-free vulnerability in Microsoft Office Excel enables local code execution when users open maliciously crafted Excel files. Affects all major Office versions including Microsoft 365 Apps for Enterprise, Excel 2016, Office 2019, Office LTSC 2021/2024 (Windows and Mac), and Office Online Server. …
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RemediationAI
Within 24 hours: Identify all endpoints running Excel 2016, Office 2019, Office LTSC 2021/2024, Microsoft 365 Apps for Enterprise, and Office Online Server via asset inventory. Within 7 days: Deploy Microsoft-released patches to all identified systems; prioritize business-critical users and systems first. …
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External POC / Exploit Code
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EUVD-2026-22581