{"id":"CVE-2021-45117","aliases":["EUVD-2021-31899","GHSA-v4v7-f2qj-8939"],"status":"published","title":"The OPC autogenerated ANSI C stack stubs (in the NodeSets) do not handle all error cases. This...","description":"The OPC autogenerated ANSI C stack stubs (in the NodeSets) do not handle all error cases. This can lead to a NULL pointer dereference.","severity":{"version":"3.1","score":6.5,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H","level":"medium","assessor":"primary","from":"nvd"},"epss":{"day":"2026-11-11","score":0.01417,"percentile":0.73127,"model":"v2026.06.15"},"facts":{"in_kev":false,"known_exploited":false,"public_exploit":false,"fix_available":false},"cwes":["CWE-476"],"published":"2022-03-21T14:05:45Z","modified":"2026-06-17T04:13:11Z","products":[{"vendor":"opcfoundation","product":"ua-nodeset"},{"vendor":"siemens","product":"simatic_net_pc"},{"vendor":"siemens","product":"sitop_manager"},{"vendor":"siemens","product":"telecontrol_server_basic"}],"references":[{"url":"https://www.youtube.com/watch?v=qv-RBdCaV4k","tags":["x_refsource_MISC","x_transferred","Exploit","Third Party Advisory"]},{"url":"https://files.opcfoundation.org/SecurityBulletins/OPC%20Foundation%20Security%20Bulletin%20CVE-2021-45117.pdf","tags":["x_refsource_MISC","x_transferred","Patch","Vendor Advisory"]},{"url":"https://cert-portal.siemens.com/productcert/pdf/ssa-285795.pdf","tags":["x_refsource_CONFIRM","x_transferred","Patch","Third Party Advisory"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2021-45117"},{"url":"https://github.com/advisories/GHSA-v4v7-f2qj-8939"}],"sources":{"cve":[{"id":"CVE-2021-45117","description":"The OPC autogenerated ANSI C stack stubs (in the NodeSets) do not handle all error cases. This can lead to a NULL pointer dereference.","status":"published","published":"2022-03-21T14:05:45Z","modified":"2024-08-04T04:39:20.271Z","updated_at":"2026-11-02T14:33:02.580561Z"}],"euvd":[{"id":"EUVD-2021-31899","description":"The OPC autogenerated ANSI C stack stubs (in the NodeSets) do not handle all error cases. This can lead to a NULL pointer dereference.","status":"published","published":"2022-03-21T14:05:45Z","modified":"2024-08-04T04:39:20Z","updated_at":"2026-11-03T03:08:28.023592Z"}],"ghsa":[{"id":"GHSA-v4v7-f2qj-8939","title":"The OPC autogenerated ANSI C stack stubs (in the NodeSets) do not handle all error cases. This...","description":"The OPC autogenerated ANSI C stack stubs (in the NodeSets) do not handle all error cases. This can lead to a NULL pointer dereference.","status":"published","published":"2022-03-22T00:00:41Z","modified":"2023-01-27T05:00:58Z","cvss":[{"version":"3.1","score":6.5,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H","level":"medium"}],"cwes":["CWE-476"],"updated_at":"2026-11-02T14:41:47.408375Z"}],"nvd":[{"id":"CVE-2021-45117","description":"The OPC autogenerated ANSI C stack stubs (in the NodeSets) do not handle all error cases. This can lead to a NULL pointer dereference.","status":"published","published":"2022-03-21T15:15:07.927Z","modified":"2026-06-17T04:13:11.847Z","cvss":[{"version":"3.1","score":6.5,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H","level":"medium","assessor":"primary"},{"version":"2.0","score":4.3,"vector":"AV:N/AC:M/Au:N/C:N/I:N/A:P","level":"medium","assessor":"primary"}],"cwes":["CWE-476"],"updated_at":"2026-11-02T14:07:05.581807Z"}]}}