Code Injection in Microsoft Teams for Android - CVE-2026-122979
Published: November 11, 2026
Vulnerability identifier: #VU165468
CSH Severity: High
CVSS v4: 8.3 [CVSS:4.0/AV:L/AC:L/AT:N/PR:N/UI:A/VC:H/VI:H/VA:N/SC:N/SI:N/SA:N]
CVE-ID: CVE-2026-122979
CWE-ID: CWE-94
Exploitation vector: Remote access
Exploit availability:
No public exploit available
Vulnerability details
The vulnerability allows a remote attacker to obtain a Teams session token and impersonate the affected user within the token's permissions.
The vulnerability exists due to improper control of code generation in Microsoft Teams for Android when synchronizing a malicious agent. A remote attacker can persuade a user or administrator to install a malicious agent to obtain a Teams session token and act as the affected user within the token's permissions.
Affected software
Microsoft Teams for Android
How to mitigate CVE-2026-122979
Install security update from vendor's website.
Microsoft Teams for Android - update to 1416/1.0.0.2026173602