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Fencer Vulns
medium 6.8

CVE-2021-20872 json

Protection mechanism failure vulnerability in KONICA MINOLTA bizhub series (bizhub C750i G00-35 and earlier, bizhub C650i/C550i/C450i G00-B…

published 2022-01-04 4 y ago modified 2026-06-17 4 mo ago also EUVD-2021-8281

cvss
6.8
version 3.1, NVD
cisa kev
Not listed
not in CISA's catalog
epss
0.3%
EPSS 0.3% chance of exploitation in 30 days, percentile 23%
public exploits
0
none known

Summary

Protection mechanism failure 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 C3851FS/C3851/C3351 GC9-X4 and earlier, bizhub 4752/4052 GC9-X4 and earlier) allows a physical attacker to bypass the firmware integrity verification and to install malicious firmware.

Patch / fix

  • konicaminolta bizhub_c759_firmware gca-y1
  • konicaminolta bizhub_c659_firmware gca-y1
  • konicaminolta bizhub_c658_firmware gca-y1
  • konicaminolta bizhub_c558_firmware gca-y1
  • konicaminolta bizhub_c458_firmware gca-y1
  • konicaminolta bizhub_958_firmware gca-y1
  • konicaminolta bizhub_808_firmware gca-y1
  • konicaminolta bizhub_758_firmware gca-y1
  • konicaminolta bizhub_658e_firmware gca-y1
  • konicaminolta bizhub_558e_firmware gca-y1
  • konicaminolta bizhub_458e_firmware gca-y1
  • konicaminolta bizhub_c287_firmware gca-y0
  • konicaminolta bizhub_c227_firmware gca-y0
  • konicaminolta bizhub_287_firmware gca-y0
  • konicaminolta bizhub_227_firmware gca-y0
  • konicaminolta bizhub_368e_firmware gca-x8
  • konicaminolta bizhub_308e_firmware gca-x8
  • konicaminolta bizhub_c368_firmware gca-x4
  • konicaminolta bizhub_c308_firmware gca-x4
  • konicaminolta bizhub_c258_firmware gca-x4

Exploit prediction

0.31% chance of exploitation in the next 30 days, higher than 23% of all scored CVEs (FIRST EPSS, 2026-11-08).

CVSS scores

assigned by version score vector
NVD 3.1 6.8 CVSS:3.1/AV:P/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
NVD 2.0 4.6 AV:L/AC:L/Au:N/C:P/I:P/A:P

Affected products

  • KONICA MINOLTA, INC. bizhub series

References

Sources

Fencer Vulns keeps one entry per vulnerability: the CVE id wins, then GHSA, and records that alias each other are merged, except that two CVEs always keep separate entries. The same data is available as JSON.