CVE-2026-78501

HIGH CVSS 7.4 View on NVD ↗

Description

Improper neutralization of special elements used in a command ('command injection') in Microsoft 365 Copilot's Business Chat allows an unauthorized attacker to disclose information over a network.

CVSS Vector

CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:H/I:N/A:N

References

https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-78501

Published: Sep 17, 2026 23:18 UTC Modified: Sep 18, 2026 15:17 UTC