6.5
MEDIUM
CVE-2025-53774
Microsoft 365 Copilot BizChat Unauthenticated Data Exposure
Description

Microsoft 365 Copilot BizChat Information Disclosure Vulnerability

INFO

Published Date :

Aug. 7, 2025, 9:15 p.m.

Last Modified :

Aug. 7, 2025, 9:26 p.m.

Source :

[email protected]

Remotely Exploitable :

Yes !

Impact Score :

2.5

Exploitability Score :

3.9
Affected Products

The following products are affected by CVE-2025-53774 vulnerability. Even if cvefeed.io is aware of the exact versions of the products that are affected, the information is not represented in the table below.

ID Vendor Product Action
1 Microsoft 365_copilot_business_chat
: Total Affected Vendor : 1 | Products : 1
References to Advisories, Solutions, and Tools

Here, you will find a curated list of external links that provide in-depth information, practical solutions, and valuable tools related to CVE-2025-53774.

URL Resource
https://msrc.microsoft.com/update-guide/vulnerability/CVE-2025-53774

We scan GitHub repositories to detect new proof-of-concept exploits. Following list is a collection of public exploits and proof-of-concepts, which have been published on GitHub (sorted by the most recently updated).

Results are limited to the first 15 repositories due to potential performance issues.

The following list is the news that have been mention CVE-2025-53774 vulnerability anywhere in the article.

The following table lists the changes that have been made to the CVE-2025-53774 vulnerability over time.

Vulnerability history details can be useful for understanding the evolution of a vulnerability, and for identifying the most recent changes that may impact the vulnerability's severity, exploitability, or other characteristics.

  • New CVE Received by [email protected]

    Aug. 07, 2025

    Action Type Old Value New Value
    Added Tag exclusively-hosted-service
    Added Description Microsoft 365 Copilot BizChat Information Disclosure Vulnerability
    Added CVSS V3.1 AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:N
    Added CWE CWE-77
    Added Reference https://msrc.microsoft.com/update-guide/vulnerability/CVE-2025-53774
EPSS is a daily estimate of the probability of exploitation activity being observed over the next 30 days. Following chart shows the EPSS score history of the vulnerability.
CWE - Common Weakness Enumeration

While CVE identifies specific instances of vulnerabilities, CWE categorizes the common flaws or weaknesses that can lead to vulnerabilities. CVE-2025-53774 is associated with the following CWEs:

Common Attack Pattern Enumeration and Classification (CAPEC)

Common Attack Pattern Enumeration and Classification (CAPEC) stores attack patterns, which are descriptions of the common attributes and approaches employed by adversaries to exploit the CVE-2025-53774 weaknesses.

CVSS31 - Vulnerability Scoring System
Attack Vector
Attack Complexity
Privileges Required
User Interaction
Scope
Confidentiality
Integrity
Availability
: