CVE-2026-21520
Unknown
Unknown - Not Provided
BaseFortify
Publication date: 2026-01-22
Last updated on: 2026-02-02
Assigner: Microsoft Corporation
Description
Description
Exposure of Sensitive Information to an Unauthorized Actor in Copilot Studio allows a unauthenticated attacker to view sensitive information through network attack vector
CVSS Scores
EPSS Scores
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Meta Information
Affected Vendors & Products
| Vendor | Product | Version / Range |
|---|---|---|
| microsoft | copilot_studio | * |
Helpful Resources
Exploitability
CWE
KEV
| 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. |
Attack-Flow Graph
AI Powered Q&A
Can you explain this vulnerability to me?
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.
How can this vulnerability impact me? :
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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