{"id":"CVE-2026-21411","aliases":["EUVD-2026-1070","GHSA-xm4x-3r5h-vwfr"],"status":"published","title":"Authentication bypass issue exists in OpenBlocks series versions prior to FW5.0.8, which may...","description":"Authentication bypass issue exists in OpenBlocks series versions prior to FW5.0.8, which may allow an attacker to bypass administrator authentication and change the password.","severity":{"version":"4.0","score":8.7,"vector":"CVSS:4.0/AV:A/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N","level":"high","assessor":"cna","from":"cve"},"epss":{"day":"2026-11-11","score":0.0037,"percentile":0.31274,"model":"v2026.06.15"},"facts":{"in_kev":false,"known_exploited":false,"public_exploit":false,"fix_available":false},"cwes":["CWE-288"],"published":"2026-01-06T06:34:11Z","modified":"2026-06-17T10:18:37Z","products":[{"vendor":"plat'home co.,ltd.","product":"openblocks idm rx1 (fw5.0.x)"},{"vendor":"plat'home co.,ltd.","product":"openblocks iot dx1 (fw5.0.x)"},{"vendor":"plat'home co.,ltd.","product":"openblocks iot ex/bx models (fw5.0.x)"},{"vendor":"plat'home co.,ltd.","product":"openblocks iot fx1 (fw5.0.x)"},{"vendor":"plat'home co.,ltd.","product":"openblocks iot vx2 (fw5.0.x)"},{"vendor":"plat'home co.,ltd.","product":"openblocks ix9 models with fw (fw5.0.x)"}],"references":[{"url":"https://www.plathome.co.jp/support/software/fw5/dx1-v5-0-8/"},{"url":"https://jvn.jp/en/vu/JVNVU97172240/"},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2026-21411"},{"url":"https://jvn.jp/en/vu/JVNVU97172240"},{"url":"https://www.plathome.co.jp/support/software/fw5/dx1-v5-0-8"},{"url":"https://github.com/advisories/GHSA-xm4x-3r5h-vwfr"}],"sources":{"cve":[{"id":"CVE-2026-21411","description":"Authentication bypass issue exists in OpenBlocks series versions prior to FW5.0.8, which may allow an attacker to bypass administrator authentication and change the password.","status":"published","published":"2026-01-06T06:34:11.329Z","modified":"2026-01-06T14:49:01.813Z","cvss":[{"version":"4.0","score":8.7,"vector":"CVSS:4.0/AV:A/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N","level":"high","assessor":"cna"},{"version":"3.0","score":8.8,"vector":"CVSS:3.0/AV:A/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H","level":"high","assessor":"cna"}],"cwes":["CWE-288"],"updated_at":"2026-11-02T13:41:53.237769Z"}],"euvd":[{"id":"EUVD-2026-1070","description":"Authentication bypass issue exists in OpenBlocks series versions prior to FW5.0.8, which may allow an attacker to bypass administrator authentication and change the password.","status":"published","published":"2026-01-06T06:34:11Z","modified":"2026-01-06T14:49:01Z","cvss":[{"version":"4.0","score":8.7,"vector":"CVSS:4.0/AV:A/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N","level":"high"}],"updated_at":"2026-11-02T19:48:55.49901Z"}],"ghsa":[{"id":"GHSA-xm4x-3r5h-vwfr","title":"Authentication bypass issue exists in OpenBlocks series versions prior to FW5.0.8, which may...","description":"Authentication bypass issue exists in OpenBlocks series versions prior to FW5.0.8, which may allow an attacker to bypass administrator authentication and change the password.","status":"published","published":"2026-01-06T09:30:28Z","modified":"2026-01-06T09:30:34Z","cvss":[{"version":"4.0","score":8.7,"vector":"CVSS:4.0/AV:A/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X","level":"high"},{"version":"3.0","score":8.8,"vector":"CVSS:3.0/AV:A/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H","level":"high"}],"cwes":["CWE-288"],"updated_at":"2026-11-02T15:05:30.549003Z"}],"nvd":[{"id":"CVE-2026-21411","description":"Authentication bypass issue exists in OpenBlocks series versions prior to FW5.0.8, which may allow an attacker to bypass administrator authentication and change the password.","status":"published","published":"2026-01-06T07:15:43.87Z","modified":"2026-06-17T10:18:37.713Z","cvss":[{"version":"4.0","score":8.7,"vector":"CVSS:4.0/AV:A/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X","level":"high","assessor":"secondary"},{"version":"3.0","score":8.8,"vector":"CVSS:3.0/AV:A/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H","level":"high","assessor":"secondary"}],"cwes":["CWE-288"],"updated_at":"2026-11-02T14:12:03.683495Z"}]}}