Improper Authentication in Microsoft Authenticator for Android - CVE-2026-80097
Published: September 8, 2026
Vulnerability identifier: #VU147884
CSH Severity: High
CVSS v4: 8.4 [CVSS:4.0/AV:L/AC:L/AT:N/PR:N/UI:A/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N]
CVE-ID: CVE-2026-80097
CWE-ID: CWE-287
Exploitation vector: Remote access
Exploit availability:
No public exploit available
Vulnerability details
The vulnerability allows a remote attacker to bypass authentication process.
The vulnerability exists due to improper authentication in Microsoft Authenticator. A remote attacker can trick a victim to install and run a malicious application, complete an authentication flow in Microsoft Authenticator and gain access to the target system.
Affected software
Microsoft Authenticator for Android
How to mitigate CVE-2026-80097
Install updates from vendor's website.
Microsoft Authenticator for Android - update to 16.3.0