access tokens

A significant security vulnerability has been found in six Microsoft 365 Android applications, including Word, PowerPoint, Excel, Microsoft 365 Copilot, Microsoft Loop, and OneNote, due to an active debug flag left in the production code. This oversight allowed untrusted apps to request and receive access tokens, compromising user account security. An attacker could exploit this vulnerability by embedding malicious code in a widely distributed app, enabling unauthorized access to sensitive information such as emails, documents, and communications. Microsoft confirmed the issues and issued CVE numbers CVE-2026-41100, -41101, and -41102, releasing patches through their Patch Tuesday mechanism and a specific patched build on the Google Play Store. Users are advised to update their applications to mitigate the risk.