Elevation of Privilege in Microsoft Custom Question Answering

Publication date: 2025-12-18

Last updated on: 2025-12-18

Assigner: Microsoft Corporation

Description

Custom Question Answering Elevation of Privilege Vulnerability

CVSS Scores

EPSS Scores

Probability:
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Meta Information

Published

2025-12-18

Last Modified

2025-12-18

Generated

2026-07-06

AI Q&A

2025-12-19

EPSS Evaluated

2026-07-05

NVD

CVE-2025-64663

Affected Vendors & Products

Vendor	Product	Version / Range
microsoft	custom_question_answering	*

Helpful Resources

Exploitability

CWE

KEV

CWE ID	Description
CWE-918	The web server receives a URL or similar request from an upstream component and retrieves the contents of this URL, but it does not sufficiently ensure that the request is being sent to the expected destination.

Attack-Flow Graph

Executive Summary

This vulnerability is an Elevation of Privilege issue in Microsoft's Custom Question Answering service, which allows an attacker with limited privileges to gain higher-level privileges without user interaction.

Impact Analysis

The vulnerability can lead to a complete compromise of confidentiality, integrity, and availability of the affected system, potentially allowing attackers to access sensitive data, modify information, and disrupt services.

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