Unrated severityNVD Advisory· Published Jun 18, 2026
M365 Copilot Information Disclosure Vulnerability
CVE-2026-54130
Description
Missing authentication for critical function in M365 Copilot allows an unauthorized attacker to disclose information over a network.
Affected products
1Patches
Vulnerability mechanics
References
1- msrc.microsoft.com/update-guide/vulnerability/CVE-2026-54130mitrevendor-advisorypatch
News mentions
2- Microsoft Cloud Batch: 13 CVEs Across Copilot, Azure, Exchange, and Developer ToolsVypr Intelligence · Jun 19, 2026
- Microsoft Cloud Batch: Four CVEs Across Copilot, Dynamics 365, Azure Bot Service, and Cost ManagementVypr Intelligence · Jun 18, 2026