CVE-2025-59272: Copilot Information Disclosure Vulnerability

Overview

Severity

Critical (CVSS 9.3)

CVSS Vector

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

Category

Spoofing

Exploit Status

Not Exploited

Exploitation Likelihood

Less Likely

Patch Tuesday

2025-Oct

Released

2025-10-09

Last Updated

2025-11-21

EPSS Score

0.10% (percentile: 26.5%)

Description

Improper neutralization of special elements used in a command ('command injection') in Copilot allows an unauthorized attacker to perform information disclosure locally.

FAQ

Why are there no links to an update or instructions with steps that must be taken to protect from this vulnerability? This vulnerability has already been fully mitigated by Microsoft. There is no action for users of this service to take. The purpose of this CVE is to provide further transparency. Please see Toward greater transparency: Unveiling Cloud Service CVEs for more information.

Affected Products (1)

Apps

• Microsoft 365 Copilot's Business Chat

Acknowledgments

<a href="https://x.com/es7evam">Estevam Arantes</a> with Microsoft

Revision History

• 2025-10-09: Information published.
• 2025-11-21: Updated information to include CVSS scores. This is an informational change only.