CVE-2026-55145: Microsoft Copilot

High severity, CVSS 7.1. EPSS: 0.5% chance of exploitation in the next 30 days.

Improper neutralization of special elements used in a command ('command injection') in Outlook Copilot allows an authorized attacker to perform tampering over a network.

Affected products

• Microsoft Copilot: affected versions not specified

Published 2026-07-14. Last modified 2026-07-22.