Microsoft Authenticator Flaw Let Permissionless Android Apps Steal Work Account Tokens

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,

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https://thehackernews.com/2026/10/microsoft-authenticator-flaw-let.html

source_url

https://thehackernews.com/2026/10/microsoft-authenticator-flaw-let.html

id: 3821
uid: tmiCQ
insdate: 2026-10-27 13:10:07
title: Microsoft Authenticator Flaw Let Permissionless Android Apps Steal Work Account Tokens
additional: 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,
category: Cybersecurity
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guid: https://thehackernews.com/2026/10/microsoft-authenticator-flaw-let.html
source_url: https://thehackernews.com/2026/10/microsoft-authenticator-flaw-let.html
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