{"id":"CVE-2026-67866","aliases":["EUVD-2026-53669","GHSA-9m32-jq6f-7wh4"],"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 LockedStaMac_ProcessMsg_DeleteMonitoredItemsResponse and SOPC_StaMac_NewDeleteMonitoredItems in the client wrapper DeleteMonitoredItems path","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":0.0082,"percentile":0.57592,"model":"v2026.06.15"},"facts":{"in_kev":false,"known_exploited":false,"public_exploit":false,"fix_available":false},"cwes":["CWE-121"],"published":"2026-08-05T00:00:00Z","modified":"2026-10-24T16:10:00Z","references":[{"url":"https://github.com/gff-cw/information/issues/16","tags":["exploit"]},{"url":"https://github.com/systerel/S2OPC/blob/master/src/ClientServer/frontend/client_wrapper/internal/state_machine.c"},{"url":"https://github.com/systerel/S2OPC/blob/master/samples/ClientServer/client_wrapper/examples/subscribe.c"},{"url":"https://gitlab.com/systerel/S2OPC/-/work_items/1780"},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2026-67866"},{"url":"https://github.com/advisories/GHSA-9m32-jq6f-7wh4"}],"sources":{"cve":[{"id":"CVE-2026-67866","description":"Buffer Overflow vulnerability in Systerel S2OPC 1.7.3 allows a remote attacker to cause a denial of service via the LockedStaMac_ProcessMsg_DeleteMonitoredItemsResponse and SOPC_StaMac_NewDeleteMonitoredItems in the client wrapper DeleteMonitoredItems path","status":"published","published":"2026-08-05T00:00:00Z","modified":"2026-08-06T12:44:59.332Z","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-121"],"updated_at":"2026-11-02T14:20:06.562031Z"}],"euvd":[{"id":"EUVD-2026-53669","description":"Buffer Overflow vulnerability in Systerel S2OPC 1.7.3 allows a remote attacker to cause a denial of service via the LockedStaMac_ProcessMsg_DeleteMonitoredItemsResponse and SOPC_StaMac_NewDeleteMonitoredItems in the client wrapper DeleteMonitoredItems path","status":"published","published":"2026-08-05T00:00:00Z","modified":"2026-08-06T12:44:59Z","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-9m32-jq6f-7wh4","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 LockedStaMac_ProcessMsg_DeleteMonitoredItemsResponse and SOPC_StaMac_NewDeleteMonitoredItems in the client wrapper DeleteMonitoredItems path","status":"published","published":"2026-08-06T00:31:29Z","modified":"2026-08-06T15:33:41Z","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-121"],"updated_at":"2026-11-02T15:10:09.761462Z"}],"nvd":[{"id":"CVE-2026-67866","description":"Buffer Overflow vulnerability in Systerel S2OPC 1.7.3 allows a remote attacker to cause a denial of service via the LockedStaMac_ProcessMsg_DeleteMonitoredItemsResponse and SOPC_StaMac_NewDeleteMonitoredItems in the client wrapper DeleteMonitoredItems path","status":"published","published":"2026-08-05T23:16:53.887Z","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-121"],"updated_at":"2026-11-02T14:12:35.031043Z"}]}}