{"id":"CVE-2023-22339","aliases":["EUVD-2023-26502","GHSA-r659-h3gg-4vrp"],"status":"published","title":"Improper access control vulnerability in CONPROSYS HMI System (CHS) Ver.3.4.5 and earlier allows...","description":"Improper access control vulnerability in CONPROSYS HMI System (CHS) Ver.3.4.5 and earlier allows a remote unauthenticated attacker to bypass access restriction and obtain the server certificate including the private key of the product.","severity":{"version":"3.1","score":7.5,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N","level":"high","assessor":"primary","from":"nvd"},"epss":{"day":"2026-11-09","score":0.01189,"percentile":0.68153,"model":"v2026.06.15"},"facts":{"in_kev":false,"known_exploited":false,"public_exploit":false,"fix_available":false},"cwes":["CWE-284"],"published":"2023-01-20T00:00:00Z","modified":"2026-06-17T05:35:06Z","products":[{"vendor":"contec","product":"conprosys_hmi_system"},{"vendor":"contec co., ltd.","product":"conprosys hmi system (chs)"},{"vendor":"contec co.,ltd.","product":"conprosys hmi system (chs)"}],"references":[{"url":"https://www.contec.com/download/contract/contract4/?itemid=ea8039aa-3434-4999-9ab6-897aa690210c\u0026downloaditemid=866d7d3c-aae9-438d-87f3-17aa040df90b","tags":["x_transferred","Patch","Vendor Advisory"]},{"url":"https://www.contec.com/api/downloadlogger?download=/-/media/Contec/jp/support/security-info/contec_security_chs_230110_en.pdf","tags":["x_transferred","Patch","Vendor Advisory"]},{"url":"https://jvn.jp/en/vu/JVNVU96873821","tags":["x_transferred","Patch","Third Party Advisory"]},{"url":"https://www.cisa.gov/uscert/ics/advisories/icsa-22-347-03","tags":["x_transferred","Third Party Advisory","US Government Resource"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2023-22339"},{"url":"https://github.com/advisories/GHSA-r659-h3gg-4vrp"}],"sources":{"cve":[{"id":"CVE-2023-22339","description":"Improper access control vulnerability in CONPROSYS HMI System (CHS) Ver.3.4.5 and earlier allows a remote unauthenticated attacker to bypass access restriction and obtain the server certificate including the private key of the product.","status":"published","published":"2023-01-20T00:00:00Z","modified":"2025-04-03T20:03:53.564Z","cvss":[{"version":"3.1","score":7.5,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N","level":"high","assessor":"adp"}],"cwes":["CWE-284"],"updated_at":"2026-11-02T14:35:15.779187Z"}],"euvd":[{"id":"EUVD-2023-26502","description":"Improper access control vulnerability in CONPROSYS HMI System (CHS) Ver.3.4.5 and earlier allows a remote unauthenticated attacker to bypass access restriction and obtain the server certificate including the private key of the product.","status":"published","published":"2023-01-20T00:00:00Z","modified":"2025-04-03T20:03:53Z","cvss":[{"version":"3.1","score":7.5,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N","level":"high"}],"updated_at":"2026-11-02T20:52:42.939917Z"}],"ghsa":[{"id":"GHSA-r659-h3gg-4vrp","title":"Improper access control vulnerability in CONPROSYS HMI System (CHS) Ver.3.4.5 and earlier allows...","description":"Improper access control vulnerability in CONPROSYS HMI System (CHS) Ver.3.4.5 and earlier allows a remote unauthenticated attacker to bypass access restriction and obtain the server certificate including the private key of the product.","status":"published","published":"2023-01-20T03:30:27Z","modified":"2025-04-03T21:32:48Z","cvss":[{"version":"3.1","score":7.5,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N","level":"high"}],"cwes":["CWE-284"],"updated_at":"2026-11-02T15:00:47.69533Z"}],"nvd":[{"id":"CVE-2023-22339","description":"Improper access control vulnerability in CONPROSYS HMI System (CHS) Ver.3.4.5 and earlier allows a remote unauthenticated attacker to bypass access restriction and obtain the server certificate including the private key of the product.","status":"published","published":"2023-01-20T03:15:10.77Z","modified":"2026-06-17T05:35:06.573Z","cvss":[{"version":"3.1","score":7.5,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N","level":"high","assessor":"primary"},{"version":"3.1","score":7.5,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N","level":"high","assessor":"secondary"}],"cwes":["CWE-284"],"updated_at":"2026-11-02T14:07:45.305824Z"}]}}