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Microsoft Authenticator Flaw Let Permissionless Android Apps Steal Work Account Tokens

// AI summary

Microsoft Authenticator for Android version 6.2606.4246 fixes CVE-2026-80097, preventing permissionless apps from impersonating trusted apps to steal work account sign-in tokens.

// from the source

Microsoft has fixed a flaw in its Authenticator app for Android that let a malicious app with no permissions pose as a trusted Microsoft app, such as Teams, and collect sign-in tokens for a victim's work account. Microsoft tracks the flaw as CVE-2026-80097 and fixed it in Authenticator for Android version 6.2606.4246, so anyone using the app should update. In the researchers' tests,