On DrayTek Vigor3900, Vigor2960, and Vigor300B devices before 1.5.1, cgi-bin/mainfunction.cgi/cvmcfgupload allows remote command execution via shell metacharacters in a filename when the text/x-python-script content type is used, a different issue than CVE-2020-14472.
https://www.forescout.com/resources/draybreak-draytek-research/
https://www.securityweek.com/organizations-warned-of-exploited-sap-gpac-and-d-link-vulnerabilities/