CVE-2026-55946: Microsoft Copilot

Medium severity, CVSS 5.9. EPSS: 0.4% chance of exploitation in the next 30 days.

Improper neutralization of special elements used in a command ('command injection') in Microsoft Copilot allows an unauthorized attacker to disclose information over a network.

Affected products

• Microsoft Copilot: affected versions not specified

Published 2026-09-17. Last modified 2026-09-25.