CVE-2018-15520: Lexmark CX421 Firmware

Critical severity, CVSS 9.8. EPSS: 1.2% chance of exploitation in the next 30 days.

Various Lexmark devices have a Buffer Overflow (issue 2 of 2).

Affected products

  • Lexmark CX421 Firmware: up to and including cxnzj.052.024; from cxnzj.052.200, up to and including cxnzj.052.204
  • Lexmark CX522 Firmware: up to and including cxtzj.052.024; from cxtzj.052.200, up to and including cxtzj.052.204
  • Lexmark CX62X Firmware: up to and including cxtzj.052.024; from cxtzj.052.200, up to and including cxtzj.052.204
  • Lexmark CX72X Firmware: up to and including cxtat.052.024; from cxtat.052.200, up to and including cxtat.052.204
  • Lexmark CX82X Firmware: up to and including cxtpp.052.024; from cxtpp.052.200, up to and including cxtpp.052.204
  • Lexmark CX860 Firmware: up to and including cxtpp.052.024; from cxtpp.052.200, up to and including cxtpp.052.204
  • Lexmark CX92X Firmware: up to and including cxtmh.052.024; from cxtmh.052.200, up to and including cxtmh.052.204
  • Lexmark MB2338 Firmware: up to and including mxngm.052.024; from mxngm.052.200, up to and including mxngm.052.204
  • Lexmark MB2442 Firmware: up to and including mxtgm.052.024; from mxtgm.052.200, up to and including mxtgm.052.204
  • Lexmark MB2546 Firmware: up to and including mxtgm.052.024; from mxtgm.052.200, up to and including mxtgm.052.204
  • Lexmark MB2650 Firmware: up to and including mxtgm.052.024; from mxtgm.052.200, up to and including mxtgm.052.204
  • Lexmark MB2770 Firmware: up to and including mxtgw.052.024; from mxtgw.052.200, up to and including mxtgw.052.204
  • Lexmark MC2325 Firmware: up to and including cxnzj.052.024; from cxnzj.052.200, up to and including cxnzj.052.204
  • Lexmark MC2425 Firmware: up to and including cxnzj.052.024; from cxnzj.052.200, up to and including cxnzj.052.204
  • Lexmark MC2535 Firmware: up to and including cxtzj.052.024; from cxtzj.052.200, up to and including cxtzj.052.204
  • Lexmark MC2640 Firmware: up to and including cxtzj.052.024; from cxtzj.052.200, up to and including cxtzj.052.204
  • Lexmark MX321 Firmware: up to and including mxngm.052.024; from mxngm.052.200, up to and including mxngm.052.204
  • Lexmark MX42X Firmware: up to and including mxtgm.052.024; from mxtgm.052.200, up to and including mxtgm.052.204
  • Lexmark MX52X Firmware: up to and including mxtgm.052.024; from mxtgm.052.200, up to and including mxtgm.052.204
  • Lexmark MX622 Firmware: up to and including mxtgm.052.024; from mxtgm.052.200, up to and including mxtgm.052.204
  • Lexmark MX72X Firmware: up to and including mxtgw.052.024; from mxtgw.052.200, up to and including mxtgw.052.204
  • Lexmark MX82X Firmware: up to and including mxtgw.052.024; from mxtgw.052.200, up to and including mxtgw.052.204
  • Lexmark XC2235 Firmware: up to and including cxtzj.052.024; from cxtzj.052.200, up to and including cxtzj.052.204
  • Lexmark XC41X0 Firmware: up to and including cxtat.052.024; from cxtat.052.200, up to and including cxtat.052.204
  • Lexmark XC4240 Firmware: up to and including cxtzj.052.024; from cxtzj.052.200, up to and including cxtzj.052.204
  • and 9 more

Published 2019-06-28. Last modified 2026-06-17.