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Microsoft Security Response CenterCVE-2026-41100

Microsoft 365 Copilot for Android Spoofing Vulnerability

Improper access control in M365 Copilot allows an authorized attacker to perform spoofing locally.

Read the vendor bulletin Get alerts for Microsoft 365 Copilot for Android
4.4CVSS out of 10High severity
Scope

What the vendor says is affected

  • Microsoft 365 Copilot for Android
  • Microsoft Excel for Android
  • Microsoft Word for Android
  • Microsoft PowerPoint for Android
  • Microsoft Loop for Android
  • Microsoft OneNote for Android

Versions the vendor lists as fixed

  • 16.0.19822.20190
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. Updated by Microsoft Security Response Center

    The vendor changed the advisory after it was first published.

  3. Added to SecurityAlert

    We collected the advisory from the official source.

Vulnerabilities

CVEs named in this advisory

CVE-2026-41100View CVSS, KEV, EPSS, and threat context
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