{"id":"CVE-2021-20864","state":"PUBLISHED","title":"Improper access control vulnerability in ELECOM routers (WRC-1167GST2 firmware v1.25 and prior, WRC-1167GST2A firmware v1.25 and prior, WRC-1167GST2H firmware v1.25 and prior, WRC-","description":"Improper access control vulnerability in ELECOM routers (WRC-1167GST2 firmware v1.25 and prior, WRC-1167GST2A firmware v1.25 and prior, WRC-1167GST2H firmware v1.25 and prior, WRC-2533GS2-B firmware v1.52 and prior, WRC-2533GS2-W firmware v1.52 and prior, WRC-1750GS firmware v1.03 and prior, WRC-1750GSV firmware v2.11 and prior, WRC-1900GST firmware v1.03 and prior, WRC-2533GST firmware v1.03 and prior, WRC-2533GSTA firmware v1.03 and prior, WRC-2533GST2 firmware v1.25 and prior, WRC-2533GST2SP firmware v1.25 and prior, WRC-2533GST2-G firmware v1.25 and prior, and EDWRC-2533GST2 firmware v1.25 and prior) allows a network-adjacent unauthenticated attacker to bypass access restriction, and to start the telnet service and execute an arbitrary OS command via unspecified vectors.","publishedAt":"2021-12-01T02:15:59.000Z","updatedAt":"2024-08-03T17:53:22.628Z","severity":null,"assigner":"jpcert","products":["ELECOM CO.,LTD. ELECOM routers"],"affected":[{"vendor":"ELECOM CO.,LTD.","product":"ELECOM routers","versions":[{"version":"(WRC-1167GST2 firmware v1.25 and prior, WRC-1167GST2A firmware v1.25 and prior, WRC-1167GST2H firmware v1.25 and prior, WRC-2533GS2-B firmware v1.52 and prior, WRC-2533GS2-W firmware v1.52 and prior, WRC-1750GS firmware v1.03 and prior, WRC-1750GSV firmware v2.11 and prior, WRC-1900GST firmware v1.03 and prior, WRC-2533GST firmware v1.03 and prior, WRC-2533GSTA firmware v1.03 and prior, WRC-2533GST2 firmware v1.25 and prior, WRC-2533GST2SP firmware v1.25 and prior, WRC-2533GST2-G firmware v1.25 and prior, and EDWRC-2533GST2 firmware v1.25 and prior)","status":"affected"}]}],"references":["https://www.elecom.co.jp/news/security/20211130-01/","https://jvn.jp/en/vu/JVNVU94527926/index.html"],"weaknesses":[],"ingestedAt":"2026-10-29T19:47:55.610Z","source":{"repository":"CVEProject/cvelistV5","path":"cves/2021/20xxx/CVE-2021-20864.json","commit":"556c9d3a8cd17e218bb8e452ba7cd619a384ff47"},"raw":{"dataType":"CVE_RECORD","dataVersion":"5.1","cveMetadata":{"cveId":"CVE-2021-20864","state":"PUBLISHED","datePublished":"2021-12-01T02:15:59.000Z","dateUpdated":"2024-08-03T17:53:22.628Z","assignerShortName":"jpcert","assignerOrgId":"ede6fdc4-6654-4307-a26d-3331c018e2ce","dateReserved":"2020-12-17T00:00:00.000Z"},"containers":{"cna":{"descriptions":[{"lang":"en","value":"Improper access control vulnerability in ELECOM routers (WRC-1167GST2 firmware v1.25 and prior, WRC-1167GST2A firmware v1.25 and prior, WRC-1167GST2H firmware v1.25 and prior, WRC-2533GS2-B firmware v1.52 and prior, WRC-2533GS2-W firmware v1.52 and prior, WRC-1750GS firmware v1.03 and prior, WRC-1750GSV firmware v2.11 and prior, WRC-1900GST firmware v1.03 and prior, WRC-2533GST firmware v1.03 and prior, WRC-2533GSTA firmware v1.03 and prior, WRC-2533GST2 firmware v1.25 and prior, WRC-2533GST2SP firmware v1.25 and prior, WRC-2533GST2-G firmware v1.25 and prior, and EDWRC-2533GST2 firmware v1.25 and prior) allows a network-adjacent unauthenticated attacker to bypass access restriction, and to start the telnet service and execute an arbitrary OS command via unspecified vectors."}],"affected":[{"vendor":"ELECOM CO.,LTD.","product":"ELECOM routers","versions":[{"version":"(WRC-1167GST2 firmware v1.25 and prior, WRC-1167GST2A firmware v1.25 and prior, WRC-1167GST2H firmware v1.25 and prior, WRC-2533GS2-B firmware v1.52 and prior, WRC-2533GS2-W firmware v1.52 and prior, WRC-1750GS firmware v1.03 and prior, WRC-1750GSV firmware v2.11 and prior, WRC-1900GST firmware v1.03 and prior, WRC-2533GST firmware v1.03 and prior, WRC-2533GSTA firmware v1.03 and prior, WRC-2533GST2 firmware v1.25 and prior, WRC-2533GST2SP firmware v1.25 and prior, WRC-2533GST2-G firmware v1.25 and prior, and EDWRC-2533GST2 firmware v1.25 and prior)","status":"affected"}]}],"references":[{"url":"https://www.elecom.co.jp/news/security/20211130-01/","tags":["x_refsource_MISC"]},{"url":"https://jvn.jp/en/vu/JVNVU94527926/index.html","tags":["x_refsource_MISC"]}],"problemTypes":[{"descriptions":[{"description":"Improper Access Control","lang":"en","type":"text"}]}],"providerMetadata":{"shortName":"jpcert","dateUpdated":"2021-12-01T02:15:59.000Z","orgId":"ede6fdc4-6654-4307-a26d-3331c018e2ce"},"x_legacyV4Record":{"CVE_data_meta":{"ASSIGNER":"vultures@jpcert.or.jp","ID":"CVE-2021-20864","STATE":"PUBLIC"},"affects":{"vendor":{"vendor_data":[{"product":{"product_data":[{"product_name":"ELECOM routers","version":{"version_data":[{"version_value":"(WRC-1167GST2 firmware v1.25 and prior, WRC-1167GST2A firmware v1.25 and prior, WRC-1167GST2H firmware v1.25 and prior, WRC-2533GS2-B firmware v1.52 and prior, WRC-2533GS2-W firmware v1.52 and prior, WRC-1750GS firmware v1.03 and prior, WRC-1750GSV firmware v2.11 and prior, WRC-1900GST firmware v1.03 and prior, WRC-2533GST firmware v1.03 and prior, WRC-2533GSTA firmware v1.03 and prior, WRC-2533GST2 firmware v1.25 and prior, WRC-2533GST2SP firmware v1.25 and prior, WRC-2533GST2-G firmware v1.25 and prior, and EDWRC-2533GST2 firmware v1.25 and prior)"}]}}]},"vendor_name":"ELECOM CO.,LTD."}]}},"data_format":"MITRE","data_type":"CVE","data_version":"4.0","description":{"description_data":[{"lang":"eng","value":"Improper access control vulnerability in ELECOM routers (WRC-1167GST2 firmware v1.25 and prior, WRC-1167GST2A firmware v1.25 and prior, WRC-1167GST2H firmware v1.25 and prior, WRC-2533GS2-B firmware v1.52 and prior, WRC-2533GS2-W firmware v1.52 and prior, WRC-1750GS firmware v1.03 and prior, WRC-1750GSV firmware v2.11 and prior, WRC-1900GST firmware v1.03 and prior, WRC-2533GST firmware v1.03 and prior, WRC-2533GSTA firmware v1.03 and prior, WRC-2533GST2 firmware v1.25 and prior, WRC-2533GST2SP firmware v1.25 and prior, WRC-2533GST2-G firmware v1.25 and prior, and EDWRC-2533GST2 firmware v1.25 and prior) allows a network-adjacent unauthenticated attacker to bypass access restriction, and to start the telnet service and execute an arbitrary OS command via unspecified vectors."}]},"problemtype":{"problemtype_data":[{"description":[{"lang":"eng","value":"Improper Access Control"}]}]},"references":{"reference_data":[{"name":"https://www.elecom.co.jp/news/security/20211130-01/","refsource":"MISC","url":"https://www.elecom.co.jp/news/security/20211130-01/"},{"name":"https://jvn.jp/en/vu/JVNVU94527926/index.html","refsource":"MISC","url":"https://jvn.jp/en/vu/JVNVU94527926/index.html"}]}}},"adp":[{"title":"CVE Program Container","references":[{"url":"https://www.elecom.co.jp/news/security/20211130-01/","tags":["x_refsource_MISC","x_transferred"]},{"url":"https://jvn.jp/en/vu/JVNVU94527926/index.html","tags":["x_refsource_MISC","x_transferred"]}],"providerMetadata":{"shortName":"CVE","orgId":"af854a3a-2127-422b-91ae-364da2661108","dateUpdated":"2024-08-03T17:53:22.628Z"}}]}}}