Microsoft 365 Copilot BizChat Information Disclosure Vulnerability
Date: 2025-08
Affected: microsoft/365_copilot_chat
Attack vector: info-disclosure
Category: vulnerability-disclosure
Severity: High
CVE: CVE-2025-53774
CVE-2025-53787
CWE: CWE-77
CVSS: 6.5 (CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:N)

Microsoft 365 Copilot BizChat Information Disclosure Vulnerability


Mitigations:

Architectural layers (MAESTRO):