Mirai

**Name of the Vulnerable Software and Affected Versions** Byzoro Smart S20 versions up to 20231120 Beijing Baichuo Smart S20 versions up to 20231120 **Description** A critical issue affects some unknown functionality of the file /sysmanage/updateos.php of the component HTTP POST Request Handler. The manipulation of the `1 file upload` argument leads to unrestricted upload. The attack may be launched remotely. **Recommendations** For Byzoro Smart S20 versions up to 20231120, consider disabling the `1 file upload` argument in the /sysmanage/updateos.php file until a patch is available. For Beijing Baichuo Smart S20 versions up to 20231120, restrict access to the /sysmanage/updateos.php file to minimize the risk of exploitation. As a temporary workaround, avoid using the `1 file upload` argument in the affected HTTP POST Request Handler until the issue is resolved. At the moment, there is no information about a newer version that contains a fix for this vulnerability.