Hewlett-Packard(HP) has released a Firmware update for mitigating the Potential Vulnerability in the HP Laser Jet printer . Last month, Columbian University Researchers discovered a critical vulnerability in HP printer that allows remote access to the system , results in burning the machine. According to the HP press release, there is no customer reports of unauthorized access so far.
"HP has built a firmware update to mitigate this issue and is communicating this proactively to customers and partners. No customer has reported unauthorized access to HP. HP reiterates its recommendation to follow best practices for securing devices by placing printers behind a firewall and, where possible, disabling remote firmware upload on exposed printers." report from official press release.
The Update is available here:
http://www.hp.com/support