{"id":"CVE-2022-37012","aliases":["EUVD-2022-39669","GHSA-5xp2-x7qr-wjrx"],"status":"published","title":"This vulnerability allows remote attackers to create a denial-of-service condition on affected...","description":"This vulnerability allows remote attackers to create a denial-of-service condition on affected installations of Unified Automation OPC UA C++ Demo Server 1.7.6-537. Authentication is not required to exploit this vulnerability. The specific flaw exists within the OpcUa_SecureListener_ProcessSessionCallRequest method. A crafted OPC UA message can force the server to incorrectly update a reference count. An attacker can leverage this vulnerability to create a denial-of-service condition on the system. Was ZDI-CAN-16927.","severity":{"version":"3.0","score":7.5,"vector":"CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H","level":"high","assessor":"cna","from":"cve"},"epss":{"day":"2026-11-09","score":0.0178,"percentile":0.78405,"model":"v2026.06.15"},"facts":{"in_kev":false,"known_exploited":false,"public_exploit":false,"fix_available":false},"cwes":["CWE-911"],"published":"2023-03-29T00:00:00Z","modified":"2026-06-17T04:54:27Z","products":[{"vendor":"unified automation","product":"opc ua c++ demo server"},{"vendor":"unified-automation","product":"opc_ua_c\\+\\+_demo_server"}],"references":[{"url":"https://www.zerodayinitiative.com/advisories/ZDI-22-1030/","tags":["x_transferred","Third Party Advisory","VDB Entry"]},{"url":"https://documentation.unified-automation.com/uasdkcpp/1.7.7/CHANGELOG.txt","tags":["x_transferred","Release Notes"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2022-37012"},{"url":"https://github.com/advisories/GHSA-5xp2-x7qr-wjrx"}],"sources":{"cve":[{"id":"CVE-2022-37012","description":"This vulnerability allows remote attackers to create a denial-of-service condition on affected installations of Unified Automation OPC UA C++ Demo Server 1.7.6-537. Authentication is not required to exploit this vulnerability. The specific flaw exists within the OpcUa_SecureListener_ProcessSessionCallRequest method. A crafted OPC UA message can force the server to incorrectly update a reference count. An attacker can leverage this vulnerability to create a denial-of-service condition on the system. Was ZDI-CAN-16927.","status":"published","published":"2023-03-29T00:00:00Z","modified":"2025-02-18T19:34:23.714Z","cvss":[{"version":"3.0","score":7.5,"vector":"CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H","level":"high","assessor":"cna"}],"cwes":["CWE-911"],"updated_at":"2026-11-02T14:34:27.327929Z"}],"euvd":[{"id":"EUVD-2022-39669","description":"This vulnerability allows remote attackers to create a denial-of-service condition on affected installations of Unified Automation OPC UA C++ Demo Server 1.7.6-537. Authentication is not required to exploit this vulnerability. The specific flaw exists within the OpcUa_SecureListener_ProcessSessionCallRequest method. A crafted OPC UA message can force the server to incorrectly update a reference count. An attacker can leverage this vulnerability to create a denial-of-service condition on the system. Was ZDI-CAN-16927.","status":"published","published":"2023-03-29T00:00:00Z","modified":"2025-02-18T19:34:23Z","cvss":[{"version":"3.0","score":7.5,"vector":"CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H","level":"high"}],"updated_at":"2026-11-02T20:53:28.492188Z"}],"ghsa":[{"id":"GHSA-5xp2-x7qr-wjrx","title":"This vulnerability allows remote attackers to create a denial-of-service condition on affected...","description":"This vulnerability allows remote attackers to create a denial-of-service condition on affected installations of Unified Automation OPC UA C++ Demo Server 1.7.6-537. Authentication is not required to exploit this vulnerability. The specific flaw exists within the OpcUa_SecureListener_ProcessSessionCallRequest method. A crafted OPC UA message can force the server to incorrectly update a reference count. An attacker can leverage this vulnerability to create a denial-of-service condition on the system. Was ZDI-CAN-16927.","status":"published","published":"2023-03-29T21:30:20Z","modified":"2023-04-14T05:01:31Z","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"}],"cwes":["CWE-911"],"updated_at":"2026-11-02T14:54:30.36158Z"}],"nvd":[{"id":"CVE-2022-37012","description":"This vulnerability allows remote attackers to create a denial-of-service condition on affected installations of Unified Automation OPC UA C++ Demo Server 1.7.6-537. Authentication is not required to exploit this vulnerability. The specific flaw exists within the OpcUa_SecureListener_ProcessSessionCallRequest method. A crafted OPC UA message can force the server to incorrectly update a reference count. An attacker can leverage this vulnerability to create a denial-of-service condition on the system. Was ZDI-CAN-16927.","status":"published","published":"2023-03-29T19:15:12.827Z","modified":"2026-06-17T04:54:27.88Z","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":"3.0","score":7.5,"vector":"CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H","level":"high","assessor":"secondary"}],"cwes":["CWE-911"],"updated_at":"2026-11-02T14:07:37.020555Z"}]}}