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CVE-2026-78518
HIGH
CVSS: 8.8
Published: 2026-09-08
Modified: 2026-09-17
Description
Out-of-bounds read in Microsoft Office Excel allows an unauthorized attacker to execute code over a network.
Affected Platforms
Microsoft Office 2016Microsoft 365 AppsMicrosoft ExcelMicrosoft Microsoft 365Microsoft Office 2021Microsoft Office 2024Microsoft Office 2019
Weakness Type
CWE-20, CWE-125