CVE-2026-50517: Microsoft M365 Copilot Remote Code Execution Vulnerability

Published Jul 23, 2026
·
Updated

Deserialization of untrusted data in M365 Copilot allows an authorized attacker to execute code over a network.

Other sources

Microsoft M365 Copilot Remote Code Execution Vulnerability

— Microsoft

Affected Software

1 affected component
Microsoft 365 Copilot

Event History

Jul 23, 2026
CVE Published
via Microsoft·02:00 PM
Data Sourced
via Microsoft·02:00 PM
DescriptionSeverityWeaknessAffected Software
Updated
via Microsoft·02:00 PM
Description
Jul 24, 2026
CVE Published
via MITRE·12:01 AM
Data Sourced
via MITRE·12:01 AM
DescriptionSeverity
Data Sourced
via NVD·01:17 AM
DescriptionSeverityWeakness
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