CVE-2006-0788: Kyocera Fs-3830n

Medium severity, CVSS 5.0. EPSS: 1.6% chance of exploitation in the next 30 days.

Kyocera 3830 (aka FS-3830N) printers have a back door that allows remote attackers to read and alter configuration settings via strings that begin with "!R!SIOP0", as demonstrated using (1) a connection to to TCP port 9100 or (2) the UNIX lp command.

Affected products

• Kyocera Fs-3830n: any version

Published 2006-02-19. Last modified 2026-06-16.