Lexmark C543 Network Printer

The embedded HTTP server in multiple Lexmark laser and inkjet printers and MarkNet devices, including X94x, W840, T656, N4000, E462, C935dn, 25xxN, and other models, allows remote attackers to cause a denial of service (operating system halt) via a malformed HTTP Authorization header.

Lexmark X, W, T, E, and C devices before 2012-02-09 allow attackers to obtain sensitive information by reading passwords within exported settings.