CVE-2021-20868: Konicaminolta Bizhub 224e Firmware

Medium severity, CVSS 4.5. EPSS: 0.4% chance of exploitation in the next 30 days.

Incorrect authorization vulnerability in KONICA MINOLTA bizhub series (bizhub C750i G00-35 and earlier, bizhub C650i/C550i/C450i G00-B6 and earlier, bizhub C360i/C300i/C250i G00-B6 and earlier, bizhub 750i/650i/550i/450i G00-37 and earlier, bizhub 360i/300i G00-33 and earlier, bizhub C287i/C257i/C227i G00-19 and earlier, bizhub 306i/266i/246i/226i G00-B6 and earlier, bizhub C759/C659 GC7-X8 and earlier, bizhub C658/C558/C458 GC7-X8 and earlier, bizhub 958/808/758 GC7-X8 and earlier, bizhub 658e/558e/458e GC7-X8 and earlier, bizhub C287/C227 GC7-X8 and earlier, bizhub 287/227 GC7-X8 and earlier, bizhub 368e/308e GC7-X8 and earlier, bizhub C368/C308/C258 GC9-X4 and earlier, bizhub 558/458/368/308 GC9-X4 and earlier, bizhub C754e/C654e GDQ-M0 and earlier, bizhub 754e/654e GDQ-M0 and earlier, bizhub C554e/C454e GDQ-M1 and earlier, bizhub C364e/C284e/C224e GDQ-M1 and earlier, bizhub 554e/454e/364e/284e/224e GDQ-M1 and earlier, bizhub C754/C654 C554/C454 GR1-M0 and earlier, bizhub C364/C284/C224 GR1-M0 and earlier, bizhub 754/654 GR1-M0 and earlier, bizhub C4050i/C3350i/C4000i/C3300i G00-B6 and earlier, bizhub C3320i G00-B6 and earlier, bizhub 4750i/4050i G00-22 and earlier, bizhub 4700i G00-22 and earlier, bizhub C3851FS/C3851/C3351 GC9-X4 and earlier, and bizhub 4752/4052 GC9-X4 and earlier) allows an attacker on the adjacent network to obtain user credentials if external server authentication is enabled via a specific SOAP message sent by an administrative user.

Affected products

  • Konicaminolta Bizhub 224e Firmware: before gdr-m1 (fixed in gdr-m1)
  • Konicaminolta Bizhub 226i Firmware: before g00-e9 (fixed in g00-e9)
  • Konicaminolta Bizhub 227 Firmware: before gca-y0 (fixed in gca-y0)
  • Konicaminolta Bizhub 246i Firmware: before g00-e9 (fixed in g00-e9)
  • Konicaminolta Bizhub 266i Firmware: before g00-e9 (fixed in g00-e9)
  • Konicaminolta Bizhub 284e Firmware: before gdr-m1 (fixed in gdr-m1)
  • Konicaminolta Bizhub 287 Firmware: before gca-y0 (fixed in gca-y0)
  • Konicaminolta Bizhub 300i Firmware: before g00-e9 (fixed in g00-e9)
  • Konicaminolta Bizhub 306i Firmware: before g00-e9 (fixed in g00-e9)
  • Konicaminolta Bizhub 308 Firmware: before gca-x4 (fixed in gca-x4)
  • Konicaminolta Bizhub 308e Firmware: before gca-x8 (fixed in gca-x8)
  • Konicaminolta Bizhub 360i Firmware: before g00-e9 (fixed in g00-e9)
  • Konicaminolta Bizhub 364e Firmware: before gdr-m1 (fixed in gdr-m1)
  • Konicaminolta Bizhub 368 Firmware: before gca-x4 (fixed in gca-x4)
  • Konicaminolta Bizhub 368e Firmware: before gca-x8 (fixed in gca-x8)
  • Konicaminolta Bizhub 4050i Firmware: before g00-e9 (fixed in g00-e9)
  • Konicaminolta Bizhub 4052 Firmware: before gca-x4 (fixed in gca-x4)
  • Konicaminolta Bizhub 450i Firmware: before g00-e9 (fixed in g00-e9)
  • Konicaminolta Bizhub 454e Firmware: before gdr-m1 (fixed in gdr-m1)
  • Konicaminolta Bizhub 458 Firmware: before gca-x4 (fixed in gca-x4)
  • Konicaminolta Bizhub 458e Firmware: before gca-y1 (fixed in gca-y1)
  • Konicaminolta Bizhub 4700i Firmware: before g00-e9 (fixed in g00-e9)
  • Konicaminolta Bizhub 4750i Firmware: before g00-e9 (fixed in g00-e9)
  • Konicaminolta Bizhub 4752 Firmware: before gca-x4 (fixed in gca-x4)
  • Konicaminolta Bizhub 550i Firmware: before g00-e9 (fixed in g00-e9)
  • and 55 more

Published 2022-01-04. Last modified 2026-06-17.