{"id":"CVE-2026-67867","aliases":["EUVD-2026-53670","GHSA-5rwg-mfvp-wq7w"],"status":"published","title":"Buffer Overflow vulnerability in Systerel S2OPC 1.7.3 allows a remote attacker to cause a denial...","description":"Buffer Overflow vulnerability in Systerel S2OPC 1.7.3 allows a remote attacker to cause a denial of service via the Alarm/Conditions wrapper when processing PublishResponse EventNotificationList data","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":"adp","from":"cve"},"epss":{"day":"2026-11-10","score":0.00541,"percentile":0.45807,"model":"v2026.06.15"},"facts":{"in_kev":false,"known_exploited":false,"public_exploit":false,"fix_available":false},"cwes":["CWE-122"],"published":"2026-08-05T00:00:00Z","modified":"2026-10-24T16:10:00Z","references":[{"url":"https://github.com/gff-cw/information/issues/18","tags":["exploit"]},{"url":"https://github.com/systerel/S2OPC/blob/S2OPC_Toolkit_1.7.3/src/ClientServer/frontend/client_wrapper/alarm_conditions/libs2opc_client_alarm_conditions.c"},{"url":"https://github.com/systerel/S2OPC/blob/S2OPC_Toolkit_1.7.3/src/ClientServer/frontend/client_wrapper/internal/state_machine.c"},{"url":"https://github.com/systerel/S2OPC/blob/S2OPC_Toolkit_1.7.3/src/ClientServer/address_space/sopc_event_manager.c"},{"url":"https://gitlab.com/systerel/S2OPC/-/work_items/1781"},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2026-67867"},{"url":"https://github.com/advisories/GHSA-5rwg-mfvp-wq7w"}],"sources":{"cve":[{"id":"CVE-2026-67867","description":"Buffer Overflow vulnerability in Systerel S2OPC 1.7.3 allows a remote attacker to cause a denial of service via the Alarm/Conditions wrapper when processing PublishResponse EventNotificationList data","status":"published","published":"2026-08-05T00:00:00Z","modified":"2026-08-06T12:40:35.687Z","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":"adp"}],"cwes":["CWE-122"],"updated_at":"2026-11-02T14:20:06.562031Z"}],"euvd":[{"id":"EUVD-2026-53670","description":"Buffer Overflow vulnerability in Systerel S2OPC 1.7.3 allows a remote attacker to cause a denial of service via the Alarm/Conditions wrapper when processing PublishResponse EventNotificationList data","status":"published","published":"2026-08-05T00:00:00Z","modified":"2026-08-06T12:40:35Z","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":"2026-11-02T18:02:09.043832Z"}],"ghsa":[{"id":"GHSA-5rwg-mfvp-wq7w","title":"Buffer Overflow vulnerability in Systerel S2OPC 1.7.3 allows a remote attacker to cause a denial...","description":"Buffer Overflow vulnerability in Systerel S2OPC 1.7.3 allows a remote attacker to cause a denial of service via the Alarm/Conditions wrapper when processing PublishResponse EventNotificationList data","status":"published","published":"2026-08-06T00:31:29Z","modified":"2026-08-06T15:32:37Z","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-122"],"updated_at":"2026-11-02T15:10:09.171432Z"}],"nvd":[{"id":"CVE-2026-67867","description":"Buffer Overflow vulnerability in Systerel S2OPC 1.7.3 allows a remote attacker to cause a denial of service via the Alarm/Conditions wrapper when processing PublishResponse EventNotificationList data","status":"published","published":"2026-08-05T23:16:53.997Z","modified":"2026-10-24T16:10:00.153Z","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":"secondary"}],"cwes":["CWE-122"],"updated_at":"2026-11-02T14:12:35.031043Z"}]}}