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**Name of the Vulnerable Software and Affected Versions** Byzoro Smart S85F Management Platform versions up to 20231010 **Description** A critical issue affects the processing of the file /sysmanage/importconf.php. The manipulation of the `btn file renew` argument leads to os command injection. The attack may be initiated remotely. The vendor was contacted about this disclosure but did not respond. **Recommendations** For Byzoro Smart S85F Management Platform versions up to 20231010, as a temporary workaround, consider restricting access to the /sysmanage/importconf.php file until a patch is available. Avoid using the `btn file renew` argument in the affected file to minimize the risk of exploitation. At the moment, there is no information about a newer version that contains a fix for this vulnerability.