Akinori Takeuchi

**Name of the Vulnerable Software and Affected Versions** Trend Micro Apex One (affected versions not specified) Trend Micro Apex One as a Service (affected versions not specified) **Description** A vulnerability in the authentication procedure allows an attacker to bypass login authentication by falsifying request parameters, potentially granting unauthorized access to protected information and circumventing security restrictions. **Recommendations** For Trend Micro Apex One, consider restricting access to the authentication module until a patch is available. For Trend Micro Apex One as a Service, avoid using vulnerable request parameters in the affected API endpoint until the issue is resolved. At the moment, there is no information about a newer version that contains a fix for this vulnerability.