{"id":"CVE-2021-40872","aliases":["EUVD-2021-28027","GHSA-hp52-5qr2-jq2v"],"status":"published","title":"An issue was discovered in Softing Industrial Automation uaToolkit Embedded before 1.40. Remote...","description":"An issue was discovered in Softing Industrial Automation uaToolkit Embedded before 1.40. Remote attackers to cause a denial of service (DoS) or login as an anonymous user (bypassing security checks) by sending crafted messages to a OPC/UA server. The server process may crash unexpectedly because of an invalid type cast, and must be restarted.","severity":{"version":"3.1","score":7.5,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H","level":"high","assessor":"primary","from":"nvd"},"epss":{"day":"2026-11-12","score":0.01511,"percentile":0.74823,"model":"v2026.06.15"},"facts":{"in_kev":false,"known_exploited":false,"public_exploit":false,"fix_available":false},"cwes":["CWE-843"],"published":"2021-11-10T22:46:19Z","modified":"2026-06-17T04:07:34Z","products":[{"vendor":"softing","product":"smartlink_hw-dp"},{"vendor":"softing","product":"uatoolkit_embedded"}],"references":[{"url":"https://industrial.softing.com/","tags":["x_refsource_MISC","x_transferred","Vendor Advisory"]},{"url":"https://industrial.softing.com/fileadmin/sof-files/pdf/ia/support/Security_Bulletin_CVE-2021-40872.pdf","tags":["x_refsource_MISC","x_transferred","Vendor Advisory"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2021-40872"},{"url":"https://github.com/advisories/GHSA-hp52-5qr2-jq2v"}],"sources":{"cve":[{"id":"CVE-2021-40872","description":"An issue was discovered in Softing Industrial Automation uaToolkit Embedded before 1.40. Remote attackers to cause a denial of service (DoS) or login as an anonymous user (bypassing security checks) by sending crafted messages to a OPC/UA server. The server process may crash unexpectedly because of an invalid type cast, and must be restarted.","status":"published","published":"2021-11-10T22:46:19Z","modified":"2024-08-04T02:51:07.721Z","updated_at":"2026-11-02T14:33:01.495293Z"}],"euvd":[{"id":"EUVD-2021-28027","description":"An issue was discovered in Softing Industrial Automation uaToolkit Embedded before 1.40. Remote attackers to cause a denial of service (DoS) or login as an anonymous user (bypassing security checks) by sending crafted messages to a OPC/UA server. The server process may crash unexpectedly because of an invalid type cast, and must be restarted.","status":"published","published":"2021-11-10T22:46:19Z","modified":"2024-08-04T02:51:07Z","updated_at":"2026-11-03T03:24:19.692229Z"}],"ghsa":[{"id":"GHSA-hp52-5qr2-jq2v","title":"An issue was discovered in Softing Industrial Automation uaToolkit Embedded before 1.40. Remote...","description":"An issue was discovered in Softing Industrial Automation uaToolkit Embedded before 1.40. Remote attackers to cause a denial of service (DoS) or login as an anonymous user (bypassing security checks) by sending crafted messages to a OPC/UA server. The server process may crash unexpectedly because of an invalid type cast, and must be restarted.","status":"published","published":"2022-05-24T19:20:27Z","modified":"2023-01-30T05:03:34Z","cwes":["CWE-843"],"updated_at":"2026-11-02T14:46:51.868413Z"}],"nvd":[{"id":"CVE-2021-40872","description":"An issue was discovered in Softing Industrial Automation uaToolkit Embedded before 1.40. Remote attackers to cause a denial of service (DoS) or login as an anonymous user (bypassing security checks) by sending crafted messages to a OPC/UA server. The server process may crash unexpectedly because of an invalid type cast, and must be restarted.","status":"published","published":"2021-11-10T23:15:08.3Z","modified":"2026-06-17T04:07:34.667Z","cvss":[{"version":"3.1","score":7.5,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H","level":"high","assessor":"primary"},{"version":"2.0","score":5,"vector":"AV:N/AC:L/Au:N/C:N/I:N/A:P","level":"medium","assessor":"primary"}],"cwes":["CWE-843"],"updated_at":"2026-11-02T14:07:00.984108Z"}]}}