{"id":"CVE-2026-27842","state":"PUBLISHED","title":"Authentication bypass issue exists in MR-GM5L-S1 and MR-GM5A-L1, which may allow an attacker to bypass authentication and change the device configuration.","description":"Authentication bypass issue exists in MR-GM5L-S1 and MR-GM5A-L1, which may allow an attacker to bypass authentication and change the device configuration.","publishedAt":"2026-03-11T05:25:34.834Z","updatedAt":"2026-03-11T15:39:46.393Z","severity":{"score":9.3,"label":"Critical","version":"4.0","vector":"CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N","source":"jpcert"},"assigner":"jpcert","products":["Micro Research Ltd. MR-GM5L-S1","Micro Research Ltd. MR-GM5A-L1"],"affected":[{"vendor":"Micro Research Ltd.","product":"MR-GM5L-S1","versions":[{"version":"firmware versions prior to v2.01.04N1_02","status":"affected"}]},{"vendor":"Micro Research Ltd.","product":"MR-GM5A-L1","versions":[{"version":"firmware versions prior to v2.01.04N1_02","status":"affected"}]}],"references":["https://www.mrl.co.jp/download/security/JVNVU98103854.pdf","https://jvn.jp/en/vu/JVNVU98103854/"],"weaknesses":["CWE-288"],"ingestedAt":"2026-10-29T20:11:31.369Z","source":{"repository":"CVEProject/cvelistV5","path":"cves/2026/27xxx/CVE-2026-27842.json","commit":"556c9d3a8cd17e218bb8e452ba7cd619a384ff47"},"raw":{"dataType":"CVE_RECORD","dataVersion":"5.2","cveMetadata":{"cveId":"CVE-2026-27842","state":"PUBLISHED","datePublished":"2026-03-11T05:25:34.834Z","dateUpdated":"2026-03-11T15:39:46.393Z","assignerShortName":"jpcert","assignerOrgId":"ede6fdc4-6654-4307-a26d-3331c018e2ce","dateReserved":"2026-03-10T01:23:00.998Z"},"containers":{"cna":{"descriptions":[{"lang":"en","value":"Authentication bypass issue exists in MR-GM5L-S1 and MR-GM5A-L1, which may allow an attacker to bypass authentication and change the device configuration."}],"affected":[{"vendor":"Micro Research Ltd.","product":"MR-GM5L-S1","versions":[{"version":"firmware versions prior to v2.01.04N1_02","status":"affected"}]},{"vendor":"Micro Research Ltd.","product":"MR-GM5A-L1","versions":[{"version":"firmware versions prior to v2.01.04N1_02","status":"affected"}]}],"references":[{"url":"https://www.mrl.co.jp/download/security/JVNVU98103854.pdf"},{"url":"https://jvn.jp/en/vu/JVNVU98103854/"}],"metrics":[{"format":"CVSS","scenarios":[{"lang":"en-US","value":"GENERAL"}],"cvssV3_0":{"version":"3.0","baseSeverity":"CRITICAL","baseScore":9.8,"vectorString":"CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H"}},{"format":"CVSS","scenarios":[{"lang":"en-US","value":"GENERAL"}],"cvssV4_0":{"version":"4.0","baseSeverity":"CRITICAL","baseScore":9.3,"vectorString":"CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N"}}],"problemTypes":[{"descriptions":[{"cweId":"CWE-288","description":"Authentication Bypass Using an Alternate Path or Channel","lang":"en-US","type":"CWE"}]}],"providerMetadata":{"shortName":"jpcert","orgId":"ede6fdc4-6654-4307-a26d-3331c018e2ce","dateUpdated":"2026-03-11T05:25:34.834Z"}},"adp":[{"title":"CISA ADP Vulnrichment","metrics":[{"other":{"type":"ssvc","content":{"id":"CVE-2026-27842","role":"CISA Coordinator","options":[{"Exploitation":"none"},{"Automatable":"yes"},{"Technical Impact":"total"}],"version":"2.0.3","timestamp":"2026-03-11T15:37:16.992716Z"}}}],"providerMetadata":{"shortName":"CISA-ADP","orgId":"134c704f-9b21-4f2e-91b3-4a467353bcc0","dateUpdated":"2026-03-11T15:39:46.393Z"}}]}}}