{"id":"CVE-2024-42512","aliases":["EUVD-2025-5035","GHSA-h958-fxgg-g7w3","GHSA-qv5f-57gw-vx3h"],"status":"published","title":"Security Update for the OPC UA .NET Standard Stack","description":"Vulnerability in the OPC UA .NET Standard Stack before 1.5.374.158 allows an unauthorized attacker to bypass application authentication when the deprecated Basic128Rsa15 security policy is enabled.","severity":{"version":"3.1","score":8.6,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:L/A:L","level":"high","assessor":"adp","from":"cve"},"epss":{"day":"2026-11-11","score":0.00594,"percentile":0.48858,"model":"v2026.06.15"},"facts":{"in_kev":false,"known_exploited":false,"public_exploit":false,"fix_available":true},"cwes":["CWE-208","CWE-639"],"published":"2025-02-10T00:00:00Z","modified":"2026-10-28T02:30:33Z","fixes":[{"ecosystem":"NuGet","package":"OPCFoundation.NetStandard.Opc.Ua.Core","fixed_in":["1.5.374.158"],"sources":["ghsa","osv"]}],"affected":[{"source":"ghsa","ecosystem":"NuGet","package":"OPCFoundation.NetStandard.Opc.Ua.Core","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"1.5.374.158"}]}]},{"source":"osv","ecosystem":"NuGet","package":"OPCFoundation.NetStandard.Opc.Ua.Core","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"1.5.374.158"}]}],"versions":["0.0.3","0.0.6","0.0.7","0.0.8","0.0.9","0.1.0","0.1.1","0.1.2","0.1.3","0.1.5","0.1.6","0.1.7","0.1.8","0.1.9","0.2.0","0.2.1","0.2.2","0.2.3","0.2.4","1.4.363.104-preview","1.4.363.107","1.4.364.40","1.4.365-gfc341ee8c5","1.4.365.1-preview","1.4.365.10","1.4.365.2","1.4.365.23","1.4.365.48","1.4.366.31-preview","1.4.366.38","1.4.367.100","1.4.367.39","1.4.367.41","1.4.367.42","1.4.367.64-preview","1.4.367.75","1.4.367.95","1.4.368.27-preview","1.4.368.33","1.4.368.52-preview","1.4.368.53","1.4.368.58","1.4.369.30","1.4.370.1","1.4.370.12","1.4.370.9","1.4.371.41","1.4.371.50","1.4.371.60","1.4.371.86","1.4.371.91","1.4.371.96","1.4.372.106","1.4.372.107","1.4.372.112-preview","1.4.372.116-preview","1.4.372.38-preview","1.4.372.46-preview","1.4.372.56","1.4.372.67-preview","1.4.372.76","1.4.372.91-preview","1.5.368.2-rc0","1.5.368.3-rc0","1.5.368.5-beta","1.5.371.3-beta","1.5.372.1-rc","1.5.372.110-rc2","1.5.372.113","1.5.373.121","1.5.373.3-preview","1.5.374.118","1.5.374.124","1.5.374.126","1.5.374.26-preview","1.5.374.27","1.5.374.33-preview","1.5.374.36","1.5.374.50-preview","1.5.374.54","1.5.374.61-preview","1.5.374.70","1.5.374.78"]}],"products":[{"vendor":"opcfoundation","product":"ua_.net_standard_stack"},{"vendor":"siemens","product":"simatic energy manager pro v7.2"},{"vendor":"siemens","product":"simatic energy manager pro v7.3"},{"vendor":"siemens","product":"simatic energy manager pro v7.4"},{"vendor":"siemens","product":"simatic energy manager pro v7.5"},{"vendor":"siemens","product":"simit v11"}],"references":[{"url":"https://files.opcfoundation.org/SecurityBulletins/OPC%20Foundation%20Security%20Bulletin%20CVE-2024-42512.pdf","tags":["Vendor Advisory","web"]},{"url":"https://cert-portal.siemens.com/productcert/html/ssa-858251.html","tags":["web"]},{"url":"https://github.com/OPCFoundation/UA-.NETStandard/security/advisories/GHSA-h958-fxgg-g7w3","tags":["web"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2024-42512","tags":["advisory"]},{"url":"https://github.com/OPCFoundation/UA-.NETStandard/commit/3543d0292556691f681e39145e2de4526b90487d","tags":["web"]},{"url":"https://github.com/advisories/GHSA-h958-fxgg-g7w3"},{"url":"https://github.com/advisories/GHSA-qv5f-57gw-vx3h"},{"url":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2024/42xxx/CVE-2024-42512.json","tags":["advisory"]},{"url":"https://github.com/OPCFoundation/UA-.NETStandard","tags":["package"]}],"sources":{"cve":[{"id":"CVE-2024-42512","description":"Vulnerability in the OPC UA .NET Standard Stack before 1.5.374.158 allows an unauthorized attacker to bypass application authentication when the deprecated Basic128Rsa15 security policy is enabled.","status":"published","published":"2025-02-10T00:00:00Z","modified":"2026-10-15T00:48:21.564Z","cvss":[{"version":"3.1","score":8.6,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:L/A:L","level":"high","assessor":"adp"}],"cwes":["CWE-208"],"updated_at":"2026-11-02T14:34:02.652467Z"}],"euvd":[{"id":"EUVD-2025-5035","description":"Vulnerability in the OPC UA .NET Standard Stack before 1.5.374.158 allows an unauthorized attacker to bypass application authentication when the deprecated Basic128Rsa15 security policy is enabled.","status":"published","published":"2025-02-10T00:00:00Z","modified":"2026-10-15T00:48:21Z","cvss":[{"version":"3.1","score":8.6,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:L/A:L","level":"high"}],"updated_at":"2026-11-02T17:27:09.754388Z"}],"ghsa":[{"id":"GHSA-h958-fxgg-g7w3","title":"Security Update for the OPC UA .NET Standard Stack","description":"This security update resolves a vulnerability in the OPC UA .NET Standard Stack that allows an unauthorized attacker to bypass application authentication when the deprecated Basic128Rsa15 security policy is enabled.\n\nNote that the Basic128Rsa15 is disabled by default so most users will not be affected. When this patch is applied the Server closes all channels using the Basic128Rsa15 if an attack is detected. This introduces a DoS before any compromise can occur which is preferable to a compromise. To prevent this failure, applications must stop using Basic128Rsa15.","status":"published","published":"2025-03-03T20:10:59Z","modified":"2025-05-27T18:36:38Z","cvss":[{"version":"3.1","score":5.9,"vector":"CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:N/A:N","level":"medium"}],"cwes":["CWE-208","CWE-639"],"updated_at":"2026-11-02T14:38:44.991725Z"},{"id":"GHSA-qv5f-57gw-vx3h","title":"Duplicate Advisory: Authorization Bypass in OPC UA .NET Standard Stack","description":"## Duplicate Advisory\nThis advisory has been withdrawn because it is a duplicate of GHSA-h958-fxgg-g7w3. This link is maintained to preserve external references.\n\n## Original Description\nVulnerability in the OPC UA .NET Standard Stack before 1.5.374.158 allows an unauthorized attacker to bypass application authentication when the deprecated Basic128Rsa15 security policy is enabled.","status":"withdrawn","published":"2025-02-10T21:31:37Z","modified":"2025-03-03T20:10:41Z","cvss":[{"version":"3.1","score":8.6,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:L/A:L","level":"high"}],"cwes":["CWE-208","CWE-639"],"updated_at":"2026-11-02T14:38:33.163519Z"}],"nvd":[{"id":"CVE-2024-42512","description":"Vulnerability in the OPC UA .NET Standard Stack before 1.5.374.158 allows an unauthorized attacker to bypass application authentication when the deprecated Basic128Rsa15 security policy is enabled.","status":"published","published":"2025-02-10T19:15:37.91Z","modified":"2026-10-15T01:18:46.967Z","cvss":[{"version":"3.1","score":8.6,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:L/A:L","level":"high","assessor":"secondary"}],"cwes":["CWE-208"],"updated_at":"2026-11-02T14:10:44.033107Z"}],"osv":[{"id":"CVE-2024-42512","description":"Vulnerability in the OPC UA .NET Standard Stack before 1.5.374.158 allows an unauthorized attacker to bypass application authentication when the deprecated Basic128Rsa15 security policy is enabled.","status":"published","published":"2025-02-10T00:00:00Z","modified":"2026-10-28T02:30:33.506584491Z","cvss":[{"version":"3.1","score":8.6,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:L/A:L","level":"high"}],"updated_at":"2026-11-02T15:44:42.322107Z"},{"id":"GHSA-h958-fxgg-g7w3","title":"Security Update for the OPC UA .NET Standard Stack","description":"This security update resolves a vulnerability in the OPC UA .NET Standard Stack that allows an unauthorized attacker to bypass application authentication when the deprecated Basic128Rsa15 security policy is enabled.\n\nNote that the Basic128Rsa15 is disabled by default so most users will not be affected. When this patch is applied the Server closes all channels using the Basic128Rsa15 if an attack is detected. This introduces a DoS before any compromise can occur which is preferable to a compromise. To prevent this failure, applications must stop using Basic128Rsa15.","status":"published","published":"2025-03-03T20:10:59Z","modified":"2025-05-27T18:55:12.904712Z","cvss":[{"version":"3.1","score":5.9,"vector":"CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:N/A:N","level":"medium"}],"cwes":["CWE-208","CWE-639"],"updated_at":"2026-11-02T15:46:48.920784Z"},{"id":"GHSA-qv5f-57gw-vx3h","title":"Duplicate Advisory: Authorization Bypass in OPC UA .NET Standard Stack","description":"## Duplicate Advisory\nThis advisory has been withdrawn because it is a duplicate of GHSA-h958-fxgg-g7w3. This link is maintained to preserve external references.\n\n## Original Description\nVulnerability in the OPC UA .NET Standard Stack before 1.5.374.158 allows an unauthorized attacker to bypass application authentication when the deprecated Basic128Rsa15 security policy is enabled.","status":"withdrawn","published":"2025-02-10T21:31:37Z","modified":"2025-03-03T20:43:43.350593Z","cvss":[{"version":"3.1","score":8.6,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:L/A:L","level":"high"}],"cwes":["CWE-208","CWE-639"],"updated_at":"2026-11-02T15:46:55.122811Z"}]}}