devices_update_printer_fw_upload.hts in HP Web JetAdmin 7.5.2546, when no password is set, allows remote attackers to upload arbitrary files to the printer directory.
https://exchange.xforce.ibmcloud.com/vulnerabilities/15605
https://euvd.enisa.europa.eu/vulnerability/EUVD-2004-1849
http://www.securityfocus.com/bid/9971
http://www.securityfocus.com/advisories/6492