Microsoft Exchange Online Remote Code Execution Vulnerability

CriticalVendor CVSS 7.5 / 10 1 CVE Published Oct 22, 2026 at 7:00 AM UTC

Summary

Stack-based buffer overflow in Microsoft Exchange Online allows an authorized attacker to execute code over a network.

Separate remediation guidance was not included in the collected bulletin.

Oct 22, 2026 at 7:00 AM UTC
Published by Microsoft Security Response Center
The publication date reported by the vendor.
Oct 23, 2026 at 1:55 AM UTC
Added to SecurityAlert
We collected the advisory from the official source.

Details collected from Microsoft Security Response Center.

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