Microsoft Office Excel Remote Code Execution Vulnerability

HighVendor CVSS 8.8 / 10 1 CVE Published Oct 15, 2026 at 7:00 AM UTC

Summary

Use after free in Microsoft Office Excel allows an unauthorized attacker to execute code over a network.

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Release Notes Install KB5002928.

Oct 15, 2026 at 7:00 AM UTC
Published by Microsoft Security Response Center
The publication date reported by the vendor.
Oct 15, 2026 at 11:35 PM UTC
Added to SecurityAlert
We collected the advisory from the official source.
Oct 21, 2026 at 1:15 AM UTC
Confirmed at the source
Our collector saw this advisory during a later source check.

Details collected from Microsoft Security Response Center.

Official bulletin How SecurityAlert builds this record

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