CVE-2026-55946

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

  • Published Sep 17, 2026
  • CVSS 5.9 medium
  • 0.4% chance of exploitation in the next 30 days (EPSS)

Affected software

CVE-2026-55946 at the National Vulnerability Database