{"id":"CVE-2018-12087","aliases":["EUVD-2018-0542","GHSA-8336-mxp6-v5h9"],"status":"published","title":"Moderate severity vulnerability that affects OPCFoundation.NetStandard.Opc.Ua","description":"Failure to validate certificates in OPC Foundation UA Client Applications communicating without security allows attackers with control over a piece of network infrastructure to decrypt passwords.","severity":{"version":"3.0","score":5.3,"vector":"CVSS:3.0/AV:P/AC:L/PR:N/UI:N/S:C/C:H/I:N/A:N","level":"medium","assessor":"primary","from":"nvd"},"epss":{"day":"2026-11-09","score":0.00286,"percentile":0.21297,"model":"v2026.06.15"},"facts":{"in_kev":false,"known_exploited":false,"public_exploit":false,"fix_available":true},"cwes":["CWE-295"],"published":"2018-10-03T18:00:00Z","modified":"2026-06-17T01:37:07Z","fixes":[{"ecosystem":"NuGet","package":"OPCFoundation.NetStandard.Opc.Ua","fixed_in":["1.4.353.15"],"sources":["ghsa","osv"]}],"affected":[{"source":"ghsa","ecosystem":"NuGet","package":"OPCFoundation.NetStandard.Opc.Ua","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"last_affected":"1.4.352.12"},{"fixed":"1.4.353.15"}]}]},{"source":"osv","ecosystem":"NuGet","package":"OPCFoundation.NetStandard.Opc.Ua","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"1.4.353.15"}]}],"versions":["0.4.0","0.4.1","0.4.3","0.4.4","0.4.5","1.3.348","1.3.349","1.3.350","1.3.350.1","1.3.350.3","1.3.350.4","1.3.350.5","1.3.350.6","1.3.351.7","1.3.352.10","1.3.352.11","1.3.352.12","1.3.352.9","1.4.353.13","1.4.353.14"]}],"products":[{"vendor":"opcfoundation","product":"ua-.net-legacy"},{"vendor":"opcfoundation","product":"ua-.netstandard"}],"references":[{"url":"https://opcfoundation-onlineapplications.org/faq/SecurityBulletins/OPC_Foundation_Security_Bulletin_CVE-2018-12087.pdf","tags":["x_refsource_CONFIRM","x_transferred","Mitigation","Vendor Advisory","web"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2018-12087","tags":["advisory"]},{"url":"https://github.com/advisories/GHSA-8336-mxp6-v5h9","tags":["advisory"]}],"sources":{"cve":[{"id":"CVE-2018-12087","description":"Failure to validate certificates in OPC Foundation UA Client Applications communicating without security allows attackers with control over a piece of network infrastructure to decrypt passwords.","status":"published","published":"2018-10-03T18:00:00Z","modified":"2024-08-05T08:24:03.775Z","updated_at":"2026-11-02T14:35:06.320867Z"}],"euvd":[{"id":"EUVD-2018-0542","description":"Failure to validate certificates in OPC Foundation UA Client Applications communicating without security allows attackers with control over a piece of network infrastructure to decrypt passwords.","status":"published","published":"2018-10-03T18:00:00Z","modified":"2024-08-05T08:24:03Z","updated_at":"2026-11-03T02:39:54.130594Z"}],"ghsa":[{"id":"GHSA-8336-mxp6-v5h9","title":"Moderate severity vulnerability that affects OPCFoundation.NetStandard.Opc.Ua","description":"Failure to validate certificates in OPC Foundation UA Client Applications communicating without security allows attackers with control over a piece of network infrastructure to decrypt passwords.","status":"published","published":"2018-10-16T19:51:18Z","modified":"2023-01-09T05:02:56Z","cvss":[{"version":"3.0","score":5.3,"vector":"CVSS:3.0/AV:P/AC:L/PR:N/UI:N/S:C/C:H/I:N/A:N","level":"medium"}],"cwes":["CWE-295"],"updated_at":"2026-11-02T14:36:04.396827Z"}],"nvd":[{"id":"CVE-2018-12087","description":"Failure to validate certificates in OPC Foundation UA Client Applications communicating without security allows attackers with control over a piece of network infrastructure to decrypt passwords.","status":"published","published":"2018-10-03T18:29:00.243Z","modified":"2026-06-17T01:37:07.73Z","cvss":[{"version":"3.0","score":5.3,"vector":"CVSS:3.0/AV:P/AC:L/PR:N/UI:N/S:C/C:H/I:N/A:N","level":"medium","assessor":"primary"},{"version":"2.0","score":2.1,"vector":"AV:L/AC:L/Au:N/C:P/I:N/A:N","level":"low","assessor":"primary"}],"cwes":["CWE-295"],"updated_at":"2026-11-02T14:04:42.52179Z"}],"osv":[{"id":"GHSA-8336-mxp6-v5h9","title":"Moderate severity vulnerability that affects OPCFoundation.NetStandard.Opc.Ua","description":"Failure to validate certificates in OPC Foundation UA Client Applications communicating without security allows attackers with control over a piece of network infrastructure to decrypt passwords.","status":"published","published":"2018-10-16T19:51:18Z","modified":"2023-11-08T03:59:49.175653Z","cvss":[{"version":"3.0","score":5.3,"vector":"CVSS:3.0/AV:P/AC:L/PR:N/UI:N/S:C/C:H/I:N/A:N","level":"medium"}],"cwes":["CWE-295"],"updated_at":"2026-11-02T15:46:41.732368Z"}]}}