CVE-2025-53787
Microsoft 365 Copilot BizChat Information Disclosure Vulnerability
Microsoft 365 Copilot BizChat Information Disclosure Vulnerability
Attack profile
How easy it is to exploit
- Attack vector
- Network
- Complexity
- Low
- Privileges needed
- None
- User interaction
- None
What an attacker can affect
- Confidentiality
- High
- Integrity
- Low
- Availability
- None
Exploit likelihood
What each source reports
CVE List Score used
Microsoft 365 Copilot BizChat Information Disclosure Vulnerability
Microsoft 365 Copilot BizChat Information Disclosure Vulnerability
- Record
CVE-2025-53787- CVSS 3.1
- 8.2 High
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 - Weakness
- CWE-77
- Updated
- 2026-11-02
EUVDEUVD-2025-23955
Microsoft 365 Copilot BizChat Information Disclosure Vulnerability
- Record
EUVD-2025-23955- CVSS 3.1
- 8.2 High
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 - Updated
- 2026-11-02
GitHub AdvisoriesGHSA-77gm-c93f-mhj7
Microsoft 365 Copilot BizChat Information Disclosure Vulnerability
Microsoft 365 Copilot BizChat Information Disclosure Vulnerability
- Record
GHSA-77gm-c93f-mhj7- CVSS 3.1
- 8.2 High
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:L/A:N - Weakness
- CWE-77
- Updated
- 2026-11-02
NVD
Microsoft 365 Copilot BizChat Information Disclosure Vulnerability
- Record
CVE-2025-53787- CVSS 3.1
- 8.2 High
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:L/A:N - CVSS 3.1
- 7.5 High
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N - Weakness
- CWE-77
- Updated
- 2026-11-02
Affected products
History
| Recorded | Changed | Sources |
|---|---|---|
| first indexed | CVE List, EUVD, GitHub Advisories, NVD |
Dates are when Every CVE recorded each change. Upstream dates may differ.
In short
CVE-2025-53787 is a high vulnerability (CVSS 8.2) in Microsoft 365 Copilot Chat, published August 7, 2025. No source lists public exploit code. EPSS puts the chance of exploitation in the next 30 days at 0.74%, the 54th percentile. No source names a fixed version.