Microsoft 365 Copilot BizChat Information Disclosure Vulnerability
CVE-2025-53787 is an information disclosure vulnerability in Microsoft 365 Copilot's Business Chat (rated Critical, CVSS 8.2). Microsoft fixed it in the service; customers need to do nothing.
1 version
Facts
- Microsoft id
CVE-2025-53787- Products
- Microsoft 365 Copilot's Business Chat
- Severity
- Critical
- Impact
- Information Disclosure
- CVSS
- 8.2
- CVSS vector
- CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:L/A:N/E:U/RL:O/RC:C
- Exploited
- No
- Publicly disclosed
- No
- Customer action required
- No
- Release
- 2025-Aug
- Assigned by
- Microsoft
- Weakness
- CWE-77: Improper Neutralization of Special Elements used in a Command ('Command Injection')
- MSRC revision
- 1.0
- First captured by us
- (from our first import of this list)
- Microsoft last modified
- Source
- Security updates · open the original at Microsoft
Microsoft's revision notes
- Revision 1.0, 2025-08-07:
Information published.
Microsoft says
Why are there no links to an update or instructions with steps that must be taken to protect from this vulnerability?
What Microsoft changed
One version so far. If Microsoft edits it, each change shows here with what was removed and added.
First version we captured ·
The text as we first saw it
Seen by us · Microsoft's timestamp · Microsoft's page