CVE-2025-53774 MEDIUM

CVE-2025-53774: Microsoft 365 Copilot BizChat Information Disclosure Vulnerability

Vendor Microsoft
Product Microsoft 365 Copilot's Business Chat
Weakness CWE-77
Published August 7, 2025
Last update February 26, 2026
View on NVD All CVEs

CVSS base score

6.5/10
Attack vector Network
Attack complexity Low
Privileges required None
User interaction None
Confidentiality Low
Integrity Low

CVSS vector

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:N/E:U/RL:O/RC:C

What the vulnerability does

01Description

Microsoft 365 Copilot BizChat Information Disclosure Vulnerability

Key dates

02Disclosure timeline

August 7, 2025 CVE published
February 26, 2026 Record updated