{"cve":"CVE-2021-20872","nvd":{"published":"2022-01-04T04:15:07.457","modified":"2026-06-17T03:34:35.170","status":"Modified","description":"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.","cvss_v4":null,"cvss_v3":{"version":"3.1","vector":"CVSS:3.1/AV:P/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H","score":6.8},"cwes":[],"references":["https://jvn.jp/en/vu/JVNVU95192472/index.html","https://jvn.jp/vu/JVNVU95192472/index.html","https://www.konicaminolta.com/global/newsroom/topics/2021/1224-01-01.html","https://www.konicaminolta.jp/business/support/important/211224_01_01.html","https://jvn.jp/en/vu/JVNVU95192472/index.html"],"products":["konicaminolta:bizhub_224e_firmware","konicaminolta:bizhub_227_firmware","konicaminolta:bizhub_284e_firmware","konicaminolta:bizhub_287_firmware","konicaminolta:bizhub_308_firmware","konicaminolta:bizhub_308e_firmware","konicaminolta:bizhub_364e_firmware","konicaminolta:bizhub_368_firmware","konicaminolta:bizhub_368e_firmware","konicaminolta:bizhub_4052_firmware","konicaminolta:bizhub_454e_firmware","konicaminolta:bizhub_458_firmware","konicaminolta:bizhub_458e_firmware","konicaminolta:bizhub_4752_firmware","konicaminolta:bizhub_554e_firmware","konicaminolta:bizhub_558_firmware","konicaminolta:bizhub_558e_firmware","konicaminolta:bizhub_654_firmware","konicaminolta:bizhub_654e_firmware","konicaminolta:bizhub_658e_firmware","konicaminolta:bizhub_754_firmware","konicaminolta:bizhub_754e_firmware","konicaminolta:bizhub_758_firmware","konicaminolta:bizhub_808_firmware","konicaminolta:bizhub_958_firmware","konicaminolta:bizhub_c224_firmware","konicaminolta:bizhub_c224e_firmware","konicaminolta:bizhub_c227_firmware","konicaminolta:bizhub_c258_firmware","konicaminolta:bizhub_c284_firmware","konicaminolta:bizhub_c284e_firmware","konicaminolta:bizhub_c287_firmware","konicaminolta:bizhub_c308_firmware","konicaminolta:bizhub_c3351_firmware","konicaminolta:bizhub_c364_firmware","konicaminolta:bizhub_c364e_firmware","konicaminolta:bizhub_c368_firmware","konicaminolta:bizhub_c3851_firmware","konicaminolta:bizhub_c3851fs_firmware","konicaminolta:bizhub_c454_firmware","konicaminolta:bizhub_c454e_firmware","konicaminolta:bizhub_c458_firmware","konicaminolta:bizhub_c554_firmware","konicaminolta:bizhub_c554e_firmware","konicaminolta:bizhub_c558_firmware","konicaminolta:bizhub_c654_firmware","konicaminolta:bizhub_c654e_firmware","konicaminolta:bizhub_c658_firmware","konicaminolta:bizhub_c659_firmware","konicaminolta:bizhub_c754_firmware"],"source":"nvd","synced_at":"2026-10-19T21:26:33.761856376+00:00"},"epss":{"cve":"CVE-2021-20872","score":0.0031,"percentile":0.23834,"date":"2026-10-31"},"kev":null,"osv":[],"attribution":["This product uses the NVD API but is not endorsed or certified by the NVD.","EPSS scores: FIRST Exploit Prediction Scoring System, https://www.first.org/epss","Known exploited vulnerabilities: CISA Known Exploited Vulnerabilities Catalog, https://www.cisa.gov/known-exploited-vulnerabilities-catalog","Package advisories: OSV (https://osv.dev), from the GitHub Advisory Database, PyPA, Go, RustSec and other ecosystem databases, under CC-BY 4.0 or CC0","CVE records: the CVE Program's CVE List (https://www.cve.org), under its terms of use (https://www.cve.org/Legal/TermsOfUse). CVE is a registered trademark of The MITRE Corporation; this product is not affiliated with the CVE Program."]}