Origin validation error in Microsoft Teams for Android - CVE-2026-69901
Published: November 11, 2026
Vulnerability identifier: #VU165523
CSH Severity: Medium
CVSS v4: 8.7 [CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:N/VA:N/SC:N/SI:N/SA:N]
CVE-ID: CVE-2026-69901
CWE-ID: CWE-346
Exploitation vector: Remote access
Exploit availability:
No public exploit available
Vulnerability details
The vulnerability allows a remote attacker to access tokens beyond a user's typical privileges.
The vulnerability exists due to an origin validation error in Microsoft Teams for Android when handling network communications. A remote attacker can spoof the origin of communications to obtain tokens beyond a user's typical privileges.
Affected software
Microsoft Teams for Android
How to mitigate CVE-2026-69901
Install security update from vendor's website.
Microsoft Teams for Android - update to 1416/1.0.0.2026202302