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Microsoft Security Response CenterCVE-2026-58617

M365 Copilot for iOS Elevation of Privilege Vulnerability

Improper access control in Microsoft 365 Copilot for iOS allows an unauthorized attacker to elevate privileges over a network.

Read the vendor bulletin Get alerts for Microsoft 365 Copilot for iOS
8.1CVSS out of 10High severity
Scope

What the vendor says is affected

  • Microsoft 365 Copilot for iOS

Versions the vendor lists as fixed

  • 2.111.4
Next step

What the vendor recommends

Release Notes

Review the complete instructions on the vendor's site
Timeline

When this advisory changed

  1. Published by Microsoft Security Response Center

    The publication date reported by the vendor.

  2. Added to SecurityAlert

    We collected the advisory from the official source.

Vulnerabilities

CVEs named in this advisory

CVE-2026-58617View CVSS, KEV, EPSS, and threat context
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