CVE-2025-53787

Name: CVE-2025-53787
Creator: NVD / NIST
Published: 2025-08-07T21:15:28.427+00:00
License: https://creativecommons.org/publicdomain/zero/1.0/

HIGHCVSS 7.5/10EPSS 0.64%

Last modified Jun 17, 2026

CVE-2025-53787 is a high-severity vulnerability rated 7.5/10 on the CVSS scale. Microsoft 365 Copilot BizChat Information Disclosure Vulnerability. EPSS estimates a 0.64% chance of exploitation in the next 30 days.

Description

Microsoft 365 Copilot BizChat Information Disclosure Vulnerability

Metrics

CVSS 3.1

7.5/10

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N

EPSS Probability

0.64%

46.1th percentile

Probability of exploitation in the next 30 days. Learn more

Weakness Enumeration

CWE-77

Affected Software

Vendor	Product	Versions
Microsoft	365 Copilot Chat	All versions

References

https://msrc.microsoft.com/update-guide/vulnerability/CVE-2025-53787Vendor Advisory

Timeline

Published: Aug 7, 2025
Last Modified: Jun 17, 2026
Status: Analyzed

Frequently Asked Questions

What is CVE-2025-53787?

Microsoft 365 Copilot BizChat Information Disclosure Vulnerability

How severe is CVE-2025-53787?

CVE-2025-53787 has a CVSS score of 7.5/10 (HIGH severity). The EPSS model estimates a 0.64% probability of exploitation in the next 30 days.

How do I fix CVE-2025-53787?

Check the vendor references and advisories linked above for patched versions and mitigation guidance. You can also run a Strix scan to test if your systems are affected.

Are you affected by CVE-2025-53787?

Run a free Strix scan to check your systems for this vulnerability.

Scan your code now

Source: NVD / NIST