{"id":"CVE-2023-32787","aliases":["EUVD-2023-37008","GHSA-2254-9c75-9fpv"],"status":"published","title":"The OPC UA Legacy Java Stack before 6f176f2 enables an attacker to block OPC UA server...","description":"The OPC UA Legacy Java Stack before 6f176f2 enables an attacker to block OPC UA server applications via uncontrolled resource consumption so that they can no longer serve client applications.","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":"2026-11-11","score":0.01168,"percentile":0.67777,"model":"v2026.06.15"},"facts":{"in_kev":false,"known_exploited":false,"public_exploit":false,"fix_available":false},"cwes":["CWE-400"],"published":"2023-05-15T00:00:00Z","modified":"2026-06-17T05:59:34Z","products":[{"vendor":"opcfoundation","product":"ua_java_legacy"},{"vendor":"prosysopc","product":"ua_historian"},{"vendor":"prosysopc","product":"ua_modbus_server"},{"vendor":"prosysopc","product":"ua_simulation_server"}],"references":[{"url":"https://github.com/OPCFoundation/UA-Java-Legacy","tags":["x_transferred","Product","package"]},{"url":"https://github.com/OPCFoundation/UA-Java-Legacy/commit/6f176f2b445a27c157f1a32f225accc9ce8873c0","tags":["x_transferred","Patch","fix"]},{"url":"https://files.opcfoundation.org/SecurityBulletins/OPC%20Foundation%20Security%20Bulletin%20CVE-2023-32787.pdf","tags":["x_transferred","Patch","Vendor Advisory","fix"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2023-32787"},{"url":"https://github.com/advisories/GHSA-2254-9c75-9fpv"}],"sources":{"cve":[{"id":"CVE-2023-32787","description":"The OPC UA Legacy Java Stack before 6f176f2 enables an attacker to block OPC UA server applications via uncontrolled resource consumption so that they can no longer serve client applications.","status":"published","published":"2023-05-15T00:00:00Z","modified":"2024-08-02T15:25:37.089Z","updated_at":"2026-11-02T14:35:29.381004Z"}],"euvd":[{"id":"EUVD-2023-37008","description":"The OPC UA Legacy Java Stack before 6f176f2 enables an attacker to block OPC UA server applications via uncontrolled resource consumption so that they can no longer serve client applications.","status":"published","published":"2023-05-15T00:00:00Z","modified":"2024-08-02T15:25:37Z","updated_at":"2026-11-03T03:50:05.016714Z"}],"ghsa":[{"id":"GHSA-2254-9c75-9fpv","title":"The OPC UA Legacy Java Stack before 6f176f2 enables an attacker to block OPC UA server...","description":"The OPC UA Legacy Java Stack before 6f176f2 enables an attacker to block OPC UA server applications via uncontrolled resource consumption so that they can no longer serve client applications.","status":"published","published":"2023-05-15T15:30:23Z","modified":"2024-04-02T15:30:36Z","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-400"],"updated_at":"2026-11-02T14:55:46.249342Z"}],"nvd":[{"id":"CVE-2023-32787","description":"The OPC UA Legacy Java Stack before 6f176f2 enables an attacker to block OPC UA server applications via uncontrolled resource consumption so that they can no longer serve client applications.","status":"published","published":"2023-05-15T15:15:12.823Z","modified":"2026-06-17T05:59:34.66Z","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"}],"cwes":["CWE-400"],"updated_at":"2026-11-02T14:08:02.399327Z"}],"osv":[{"id":"CVE-2023-32787","description":"The OPC UA Legacy Java Stack before 6f176f2 enables an attacker to block OPC UA server applications via uncontrolled resource consumption so that they can no longer serve client applications.","status":"published","published":"2023-05-15T15:15:12.823Z","modified":"2026-04-02T09:02:16.372085Z","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"}],"updated_at":"2026-11-02T15:44:32.116263Z"}]}}