CVE-2026-45497 HIGH

CVE-2026-45497: Microsoft M365 Copilot Remote Code Execution Vulnerability

Vendor Microsoft
Product Microsoft 365 Copilot
Weakness CWE-77
Published June 4, 2026
Last update June 15, 2026
View on NVD All CVEs

CVSS base score

7.7/10
Attack vector Network
Attack complexity High
Privileges required Low
User interaction None
Confidentiality High
Integrity Low

CVSS vector

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

What the vulnerability does

01Description

Improper neutralization of special elements used in a command ('command injection') in Microsoft Copilot allows an authorized attacker to execute code over a network.

Key dates

02Disclosure timeline

June 4, 2026 CVE published
June 15, 2026 Record updated