{"schemaVersion":3,"id":"CVE-2024-42512","aliases":["GHSA-h958-fxgg-g7w3"],"status":"published","duplicateOf":null,"title":null,"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.","dates":{"published":"2025-02-10T00:00:00.000Z","modified":"2026-10-15T00:48:21.564Z","reserved":null,"kevAdded":[],"kevDue":[]},"cvss":{"headline":{"score":8.6,"severity":"high","version":"3.1","versionLabel":"v3.1","source":"CVE.org","vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:L/A:L","computed":false,"selection":"backend-summary"},"metrics":[{"version":"3.1","versionLabel":"v3.1","source":"CVE.org","score":8.6,"severity":"high","vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:L/A:L","exploitability":null,"impact":null,"computed":false},{"version":"3.1","versionLabel":"v3.1","source":"OSV · Nuget","score":5.9,"severity":"medium","vector":"CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:N/A:N","exploitability":5.6,"impact":6,"computed":true},{"version":"3.1","versionLabel":"v3.1","source":"NVD","score":8.6,"severity":"high","vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:L/A:L","exploitability":null,"impact":null,"computed":false}]},"epss":{"probability":0.00599,"percentile":0.47599,"severity":"low","asOf":"2026-10-18T00:00:00.000Z","change":{"pp":0,"baselineDate":"2026-09-18T00:00:00.000Z","baselineScore":0.00599},"history":[{"date":"2026-09-14T00:00:00.000Z","score":0.00599,"percentile":null},{"date":"2026-09-15T00:00:00.000Z","score":0.00599,"percentile":null},{"date":"2026-09-16T00:00:00.000Z","score":0.00599,"percentile":null},{"date":"2026-09-17T00:00:00.000Z","score":0.00599,"percentile":null},{"date":"2026-09-18T00:00:00.000Z","score":0.00599,"percentile":null},{"date":"2026-09-19T00:00:00.000Z","score":0.00599,"percentile":null},{"date":"2026-09-20T00:00:00.000Z","score":0.00599,"percentile":null},{"date":"2026-09-21T00:00:00.000Z","score":0.00599,"percentile":null},{"date":"2026-09-22T00:00:00.000Z","score":0.00599,"percentile":null},{"date":"2026-09-23T00:00:00.000Z","score":0.00599,"percentile":null},{"date":"2026-09-24T00:00:00.000Z","score":0.00599,"percentile":null},{"date":"2026-09-25T00:00:00.000Z","score":0.00599,"percentile":null},{"date":"2026-09-26T00:00:00.000Z","score":0.00599,"percentile":null},{"date":"2026-09-27T00:00:00.000Z","score":0.00599,"percentile":null},{"date":"2026-09-28T00:00:00.000Z","score":0.00599,"percentile":null},{"date":"2026-09-29T00:00:00.000Z","score":0.00599,"percentile":null},{"date":"2026-09-30T00:00:00.000Z","score":0.00599,"percentile":null},{"date":"2026-10-01T00:00:00.000Z","score":0.00599,"percentile":null},{"date":"2026-10-02T00:00:00.000Z","score":0.00599,"percentile":null},{"date":"2026-10-03T00:00:00.000Z","score":0.00599,"percentile":null},{"date":"2026-10-04T00:00:00.000Z","score":0.00599,"percentile":null},{"date":"2026-10-05T00:00:00.000Z","score":0.00599,"percentile":null},{"date":"2026-10-06T00:00:00.000Z","score":0.00599,"percentile":null},{"date":"2026-10-07T00:00:00.000Z","score":0.00599,"percentile":null},{"date":"2026-10-08T00:00:00.000Z","score":0.00599,"percentile":null},{"date":"2026-10-09T00:00:00.000Z","score":0.00599,"percentile":null},{"date":"2026-10-10T00:00:00.000Z","score":0.00599,"percentile":null},{"date":"2026-10-11T00:00:00.000Z","score":0.00599,"percentile":null},{"date":"2026-10-12T00:00:00.000Z","score":0.00599,"percentile":null},{"date":"2026-10-13T00:00:00.000Z","score":0.00599,"percentile":null},{"date":"2026-10-14T00:00:00.000Z","score":0.00599,"percentile":null},{"date":"2026-10-15T00:00:00.000Z","score":0.00599,"percentile":null},{"date":"2026-10-16T00:00:00.000Z","score":0.00599,"percentile":null},{"date":"2026-10-17T00:00:00.000Z","score":0.00599,"percentile":null},{"date":"2026-10-18T00:00:00.000Z","score":0.00599,"percentile":0.47599}],"last30":[{"date":"2026-09-18T00:00:00.000Z","score":0.00599,"percentile":null},{"date":"2026-09-19T00:00:00.000Z","score":0.00599,"percentile":null},{"date":"2026-09-20T00:00:00.000Z","score":0.00599,"percentile":null},{"date":"2026-09-21T00:00:00.000Z","score":0.00599,"percentile":null},{"date":"2026-09-22T00:00:00.000Z","score":0.00599,"percentile":null},{"date":"2026-09-23T00:00:00.000Z","score":0.00599,"percentile":null},{"date":"2026-09-24T00:00:00.000Z","score":0.00599,"percentile":null},{"date":"2026-09-25T00:00:00.000Z","score":0.00599,"percentile":null},{"date":"2026-09-26T00:00:00.000Z","score":0.00599,"percentile":null},{"date":"2026-09-27T00:00:00.000Z","score":0.00599,"percentile":null},{"date":"2026-09-28T00:00:00.000Z","score":0.00599,"percentile":null},{"date":"2026-09-29T00:00:00.000Z","score":0.00599,"percentile":null},{"date":"2026-09-30T00:00:00.000Z","score":0.00599,"percentile":null},{"date":"2026-10-01T00:00:00.000Z","score":0.00599,"percentile":null},{"date":"2026-10-02T00:00:00.000Z","score":0.00599,"percentile":null},{"date":"2026-10-03T00:00:00.000Z","score":0.00599,"percentile":null},{"date":"2026-10-04T00:00:00.000Z","score":0.00599,"percentile":null},{"date":"2026-10-05T00:00:00.000Z","score":0.00599,"percentile":null},{"date":"2026-10-06T00:00:00.000Z","score":0.00599,"percentile":null},{"date":"2026-10-07T00:00:00.000Z","score":0.00599,"percentile":null},{"date":"2026-10-08T00:00:00.000Z","score":0.00599,"percentile":null},{"date":"2026-10-09T00:00:00.000Z","score":0.00599,"percentile":null},{"date":"2026-10-10T00:00:00.000Z","score":0.00599,"percentile":null},{"date":"2026-10-11T00:00:00.000Z","score":0.00599,"percentile":null},{"date":"2026-10-12T00:00:00.000Z","score":0.00599,"percentile":null},{"date":"2026-10-13T00:00:00.000Z","score":0.00599,"percentile":null},{"date":"2026-10-14T00:00:00.000Z","score":0.00599,"percentile":null},{"date":"2026-10-15T00:00:00.000Z","score":0.00599,"percentile":null},{"date":"2026-10-16T00:00:00.000Z","score":0.00599,"percentile":null},{"date":"2026-10-17T00:00:00.000Z","score":0.00599,"percentile":null},{"date":"2026-10-18T00:00:00.000Z","score":0.00599,"percentile":0.47599}]},"kev":{"state":"not-listed","entries":[],"listedCount":0,"totalCatalogs":3,"catalogs":[{"source":"cisa","label":"CISA","listed":false,"entry":null},{"source":"enisa","label":"ENISA","listed":false,"entry":null},{"source":"circl","label":"CIRCL","listed":false,"entry":null}]},"ransomware":{"state":"none-recorded","sources":[]},"exploits":[],"exploitCount":0,"weaknesses":[{"id":"CWE-208","name":"Observable Timing Discrepancy","description":"Two separate operations in a product require different amounts of time to complete, in a way that is observable to an actor and reveals security-relevant information about the state of the product, such as whether a particular operation was successful or not.","type":"weakness","status":"Incomplete","abstraction":"Base","likelihoodOfExploit":null,"url":"https://cwe.mitre.org/data/definitions/208.html"}],"affected":[{"vendor":"NuGet","product":"OPCFoundation.NetStandard.Opc.Ua.Core","name":"OPCFoundation.NetStandard.Opc.Ua.Core","label":"OPCFoundation.NetStandard.Opc.Ua.Core","ecosystem":"NuGet","cpePart":null,"purl":"pkg:nuget/OPCFoundation.NetStandard.Opc.Ua.Core","purlType":"nuget","versions":[{"text":"< 1.5.374.158","noFixRecorded":false,"fixedIn":null}],"versionsText":"< 1.5.374.158","eol":null,"hubHref":null},{"vendor":"opcfoundation","product":"ua_.net_standard_stack","name":"ua .net standard stack","label":"ua_.net_standard_stack","ecosystem":null,"cpePart":"a","purl":null,"purlType":null,"versions":[{"text":"< 1.5.374.158","noFixRecorded":false,"fixedIn":null}],"versionsText":"< 1.5.374.158","eol":null,"hubHref":"/vendor/opcfoundation/ua_net_standard_stack"}],"affectedCount":2,"eol":{"hasEol":false,"count":0},"references":[{"url":"https://files.opcfoundation.org/SecurityBulletins/OPC%20Foundation%20Security%20Bulletin%20CVE-2024-42512.pdf","label":"files.opcfoundation.org/SecurityBulletins/…","hostname":"files.opcfoundation.org","tags":["WEB","Vendor Advisory"]},{"url":"https://github.com/OPCFoundation/UA-.NETStandard/security/advisories/GHSA-h958-fxgg-g7w3","label":"github.com/OPCFoundation/UA-.NETStandard/security/advisories/GHSA-h958-fxgg-g7w3","hostname":"github.com","tags":["WEB"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2024-42512","label":"nvd.nist.gov/vuln/detail/CVE-2024-42512","hostname":"nvd.nist.gov","tags":["Advisory"]},{"url":"https://github.com/OPCFoundation/UA-.NETStandard/commit/3543d0292556691f681e39145e2de4526b90487d","label":"github.com/OPCFoundation/UA-.NETStandard/commit/3543d0292556691f681e39145e2de4526b90487d","hostname":"github.com","tags":["WEB"]},{"url":"https://github.com/OPCFoundation/UA-.NETStandard","label":"github.com/OPCFoundation/UA-.NETStandard","hostname":"github.com","tags":["PACKAGE"]},{"url":"https://cert-portal.siemens.com/productcert/html/ssa-858251.html","label":"cert-portal.siemens.com/productcert/html/ssa-858251.html","hostname":"cert-portal.siemens.com","tags":[]}],"lineage":{"upstream":[],"downstream":[],"duplicates":[],"related":[]},"timeline":[{"kind":"published","date":"2025-02-10T00:00:00.000Z","label":"Published","detail":"Vulnerability first disclosed.","source":null},{"kind":"modified","date":"2026-10-15T00:48:21.564Z","label":"Last modified","detail":"Vulnerability information updated.","source":null}],"risk":{"score":35,"level":"medium","profile":"Default","thresholds":{"critical":75,"high":50,"medium":25,"low":10}},"meta":{"dataAsOf":"2026-10-19T08:57:50.782Z","stale":false,"partial":false}}