{"id":"CVE-2025-53476","aliases":["EUVD-2025-32061","GHSA-pm3x-2fvm-pvp8"],"status":"published","title":"A denial of service vulnerability exists in the ModbusTCP server functionality of OpenPLC _v3...","description":"A denial of service vulnerability exists in the ModbusTCP server functionality of OpenPLC _v3 a931181e8b81e36fadf7b74d5cba99b73c3f6d58. A specially crafted series of network connections can lead to the server not processing subsequent Modbus requests. An attacker can open a series of TCP connections to trigger this vulnerability.","severity":{"version":"3.1","score":5.3,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L","level":"medium","assessor":"cna","from":"cve"},"epss":{"day":"2026-11-11","score":0.00465,"percentile":0.40693,"model":"v2026.06.15"},"facts":{"in_kev":false,"known_exploited":false,"public_exploit":false,"fix_available":false},"cwes":["CWE-775"],"published":"2025-10-07T13:49:56Z","modified":"2026-10-08T22:10:00Z","products":[{"vendor":"openplc","product":"openplc_v3"},{"vendor":"openplc_v3","product":"openplc_v3"}],"references":[{"url":"https://talosintelligence.com/vulnerability_reports/TALOS-2025-2223"},{"url":"https://www.talosintelligence.com/vulnerability_reports/TALOS-2025-2223"},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2025-53476"},{"url":"https://github.com/advisories/GHSA-pm3x-2fvm-pvp8"}],"sources":{"cve":[{"id":"CVE-2025-53476","description":"A denial of service vulnerability exists in the ModbusTCP server functionality of OpenPLC _v3 a931181e8b81e36fadf7b74d5cba99b73c3f6d58. A specially crafted series of network connections can lead to the server not processing subsequent Modbus requests. An attacker can open a series of TCP connections to trigger this vulnerability.","status":"published","published":"2025-10-07T13:49:56.656Z","modified":"2025-11-03T17:44:59.045Z","cvss":[{"version":"3.1","score":5.3,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L","level":"medium","assessor":"cna"}],"cwes":["CWE-775"],"updated_at":"2026-11-02T14:32:48.853452Z"}],"euvd":[{"id":"EUVD-2025-32061","description":"A denial of service vulnerability exists in the ModbusTCP server functionality of OpenPLC _v3 a931181e8b81e36fadf7b74d5cba99b73c3f6d58. A specially crafted series of network connections can lead to the server not processing subsequent Modbus requests. An attacker can open a series of TCP connections to trigger this vulnerability.","status":"published","published":"2025-10-07T13:49:56Z","modified":"2025-11-03T17:44:59Z","cvss":[{"version":"3.1","score":5.3,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L","level":"medium"}],"updated_at":"2026-11-02T19:49:35.000596Z"}],"ghsa":[{"id":"GHSA-pm3x-2fvm-pvp8","title":"A denial of service vulnerability exists in the ModbusTCP server functionality of OpenPLC _v3...","description":"A denial of service vulnerability exists in the ModbusTCP server functionality of OpenPLC _v3 a931181e8b81e36fadf7b74d5cba99b73c3f6d58. A specially crafted series of network connections can lead to the server not processing subsequent Modbus requests. An attacker can open a series of TCP connections to trigger this vulnerability.","status":"published","published":"2025-10-07T15:30:27Z","modified":"2025-11-03T18:31:46Z","cvss":[{"version":"3.1","score":5.3,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L","level":"medium"}],"cwes":["CWE-775"],"updated_at":"2026-11-02T15:04:17.65818Z"}],"nvd":[{"id":"CVE-2025-53476","description":"A denial of service vulnerability exists in the ModbusTCP server functionality of OpenPLC _v3 a931181e8b81e36fadf7b74d5cba99b73c3f6d58. A specially crafted series of network connections can lead to the server not processing subsequent Modbus requests. An attacker can open a series of TCP connections to trigger this vulnerability.","status":"published","published":"2025-10-07T14:15:37.27Z","modified":"2026-10-08T22:10:00.563Z","cvss":[{"version":"3.1","score":5.3,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L","level":"medium","assessor":"secondary"}],"cwes":["CWE-775"],"updated_at":"2026-11-02T14:11:35.93863Z"}]}}