CVE-2026-118703 · Other
NO FIX YET
A use-after-free bug in Microsoft Office Excel lets an unauthorized attacker run code over a network. The attacker gets code execution on the machine that opens the affected file or content.
first public Nov 10, 2026 · 1 source
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Organisations running Microsoft Office Excel on Windows or Mac clients are the likely exposure, since the flaw is triggered over a network and needs no account. The sources do not state which Excel builds are affected or whether preview panes or file opening alone are enough. Teams that do not use Excel can skip it.
Not affected if unknown
Who cares excel, microsoft-office, windows
No fix yet, per the sources.
Use after free in Microsoft Office Excel allows an unauthorized attacker to execute code over a network.
This page as .md · .json · CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
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