CVE-2026-21520
Unknown Unknown - Not Provided
BaseFortify

Publication date: 2026-01-22

Last updated on: 2026-02-02

Assigner: Microsoft Corporation

Description
Exposure of Sensitive Information to an Unauthorized Actor in Copilot Studio allows a unauthenticated attacker to view sensitive information through network attack vector
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Meta Information
Published
2026-01-22
Last Modified
2026-02-02
Generated
2026-06-16
AI Q&A
2026-01-23
EPSS Evaluated
2026-06-15
NVD
CVE-2026-21520
Affected Vendors & Products
Showing 1 associated CPE
Vendor Product Version / Range
microsoft copilot_studio *
Helpful Resources
Exploitability
CWE
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KEV
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CWE ID Description
CWE-77 The product constructs all or part of a command using externally-influenced input from an upstream component, but it does not neutralize or incorrectly neutralizes special elements that could modify the intended command when it is sent to a downstream component.
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Executive Summary

This vulnerability in Copilot Studio allows an unauthenticated attacker to expose sensitive information by exploiting a network attack vector, meaning the attacker can access confidential data without needing to log in or have permissions.

Impact Analysis

The vulnerability can lead to unauthorized disclosure of sensitive information, potentially compromising privacy and security. Since the attacker does not need authentication, it increases the risk of data breaches and exposure of confidential data.

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