PT-2026-58663 · Microsoft · M365 Copilot

CVE-2026-58617

Published

2026-07-14

Updated

2026-07-14

CVSS v3.1

9.8

Critical

Vector

AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

Name of the Vulnerable Software and Affected Versions Microsoft 365 Copilot for iOS (affected versions not specified)

Description Improper access control allows an unauthorized attacker to elevate privileges over a network.

Recommendations At the moment, there is no information about a newer version that contains a fix for this vulnerability.

Improper Access Control

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BDU:2026-09738

CVE-2026-58617

M365 Copilot