CVE-2026-69559: Microsoft Teams for Android Information Disclosure Vulnerability

Overview

Severity
Medium (CVSS 5.8)
CVSS Vector
CVSS:3.1/AV:N/AC:H/PR:L/UI:R/S:C/C:H/I:N/A:N/E:U/RL:O/RC:C
Category
Information Disclosure
Exploit Status
Not Exploited
Exploitation Likelihood
Unlikely
Patch Tuesday
2026-Sep
Released
2026-09-08

Description

Origin validation error in Microsoft Teams for Android allows an authorized attacker to disclose information over a network.

FAQ

What type of information could be disclosed by this vulnerability? This vulnerability could expose a sign-in access token for a user’s work account. If disclosed, that token could allow access to data and services that the user is authorized to use, potentially including sensitive organizational information. According to the CVSS metric, the attack complexity is high (AC:H). What does that mean for this vulnerability? Successful exploitation of this vulnerability requires that the target system be set up in a specific manner and the attacker to have knowledge of that setup.

Affected Products (1)

Microsoft Office

  • Microsoft Teams for Android

Security Updates (1)

Acknowledgments

Ofek Levin with <a href="https://enclave.ai/">Enclave</a>

Revision History

  • 2026-09-08: Information published.