CVE-2026-48561: Microsoft 365 Copilot

Critical severity, CVSS 9.6. EPSS: 0.9% chance of exploitation in the next 30 days.

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

Affected products

• Microsoft 365 Copilot: affected versions not specified

Published 2026-07-14. Last modified 2026-07-26.