Microsoft Teams Android Vulnerability Exposes Sensitive Data to Attackers

Microsoft disclosed a high-severity information disclosure vulnerability in its Teams application for Android, tracked as CVE-2026-42835. The flaw, published on June 9, 2026, has a CVSS v3.1 base score of 8.1, indicating it is classified as an 'Important' severity issue. This vulnerability allows authenticated attackers to potentially expose sensitive information over a network due to improper neutralization of special elements in output. Users of Microsoft Teams on Android devices are at risk, particularly in environments where sensitive data is transmitted. Microsoft has issued an advisory regarding the flaw, urging users to take appropriate measures. The vulnerability's impact could be significant depending on the number of users and the nature of the data handled by the application. As of now, no active exploitation has been reported, but the potential for misuse remains concerning.

Key Points: • CVE-2026-42835 is a high-severity vulnerability in Microsoft Teams for Android. • The flaw allows authenticated attackers to disclose sensitive information over a network. • Microsoft has rated the vulnerability as 'Important' with a CVSS score of 8.1.