CVE-2026-21520

Microsoft · Published January 22, 2026

7.5

CVSS v3.1

HIGH

Patch availableGet patch

Description

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

Affected Products

Microsoft Copilot Studio

CVSS Vector

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N/E:U/RL:O/RC:C/CR:H/IR:L/AR:L