CVE-2026-41100

MediumCVSS 4.4/10Last modified Oct 26, 2026

Description

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

Metrics

CVSS 3.1 4.4/10CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:N

Weakness enumeration

CWE-284

Affected software

Vendor	Product	Versions
Microsoft	Microsoft 365 Copilot for Android	>= 1.0, < 16.0.19822.20190
Microsoft	Microsoft Excel for Android	>= 16.0.0.0, < 16.0.19822.20190
Microsoft	Microsoft Loop for Android	>= 1.0.0, < 16.0.19822.20190
Microsoft	Microsoft OneNote for Android	>= 16.0.1, < 16.0.19822.20190
Microsoft	Microsoft PowerPoint for Android	>= 16.0.0.0, < 16.0.19822.20190
Microsoft	Microsoft Word for Android	>= 16.0.0.0, < 16.0.19822.20190

References

https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-41100Vendor Advisory

Timeline

Published: May 12, 2026
Last modified: Oct 26, 2026
NVD status: Analyzed

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