CVE-2026-41100: Microsoft 365 Copilot for Android Spoofing Vulnerability
Improper access control in M365 Copilot allows an authorized attacker to perform spoofing locally.
Other sources
Microsoft 365 Copilot for Android Spoofing Vulnerability
— Microsoft
Affected Software
Remediation
Recommended actions to resolve this vulnerability, in priority order.
- Upgrade
Upgrade to a fixed release to a version that resolves this vulnerability.
Fixed in 16.0.19822.20190
Event History
Frequently Asked Questions
What is the severity of CVE-2026-41100?
CVE-2026-41100 has a severity rating of medium with a score of 4.4.
How do I fix CVE-2026-41100?
To fix CVE-2026-41100, ensure that your Microsoft 365 Copilot for Android applications are updated to the latest version provided by Microsoft.
What type of vulnerability is CVE-2026-41100?
CVE-2026-41100 is classified as a spoofing vulnerability due to improper access control.
What products are affected by CVE-2026-41100?
CVE-2026-41100 affects various Microsoft 365 Copilot applications for Android, including Word, OneNote, Excel, PowerPoint, and Loop.
Who can exploit CVE-2026-41100?
An authorized attacker can exploit CVE-2026-41100 to perform spoofing locally within affected Microsoft 365 Copilot applications.