Information Disclosure Vulnerability in Microsoft 365 Copilot BizChat
CVE-2025-53787

8.2HIGH

Key Information:

Vendor

Microsoft
Status
Microsoft 365 Copilot's Business Chat
Vendor
CVE Published:
7 August 2025

What is CVE-2025-53787?

The Microsoft 365 Copilot BizChat is susceptible to an information disclosure vulnerability, which could potentially expose sensitive user data. This vulnerability could allow attackers to gain unauthorized access to confidential information shared within the BizChat platform, compromising the security and privacy of users. It is essential for organizations using Microsoft 365 to implement necessary security measures and updates to mitigate this risk.

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Affected Version(s)

Microsoft 365 Copilot's Business Chat Unknown

References

https://msrc.microsoft.com/update-guide/vulnerability/CVE...
vendor-advisory

CVSS V3.1

Score:
8.2
Severity:
HIGH
Confidentiality:
High
Integrity:
Low
Availability:
High
Attack Vector:
Network
Attack Complexity:
Low
Privileges Required:
None
User Interaction:
None
Scope:
Unchanged

Timeline

  • Vulnerability published

  • Vulnerability Reserved

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