A leftover debug code vulnerability exists in the httpd port 4444 upload.cgi functionality of InHand Networks InRouter302 V3.5.45. A specially-crafted HTTP request can lead to arbitrary file deletion. An attacker can send an HTTP request to trigger this vulnerability.
https://talosintelligence.com/vulnerability_reports/TALOS-2022-1522
https://inhandnetworks.com/upload/attachment/202210/25/InHand-PSA-2022-02.pdf