CVE-2026-21520

CVSS Score & Metrics

Base Score

7.5 / 10

Vector String

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

Vulnerability Description

Exposure of Sensitive Information to an Unauthorized Actor in Copilot Studio allows a unauthenticated attacker to view sensitive information through network attack vector

Vulnerability Details

Published Date

January 22, 2026

Last Modified

January 26, 2026

CWE ID

CWE-77

Source

NVD

External References

https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-21520

CVSS Score & Metrics

Vulnerability Description

Vulnerability Details

External References

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