CVE-2026-80098

CRITICAL9.3

Published 2026-09-03 · Source secure@microsoft.com

Description

Improper verification of cryptographic signature in Copilot Studio allows an unauthorized attacker to elevate privileges over a network.

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

CWE-347

References

https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-80098

View on NVD

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