{"id":"CVE-2026-67868","title":"A heap-based out-of-bounds write vulnerability exists in S2OPC 1.7.3 in server-side EventFilter handling during CreateMonitoredItems processing","summary":"A heap-based out-of-bounds write vulnerability exists in S2OPC 1.7.3 in server-side EventFilter handling during CreateMonitoredItems processing. This allows a remote attacker to execute arbitrary code.","severity":"critical","cvss":9.8,"cvssVector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H","cwe":["CWE-122"],"published":"2026-08-17","updated":"2026-09-09","sourceUpdated":"2026-09-09T16:04:24.933","source":"NVD","sourceUrl":"https://nvd.nist.gov/vuln/detail/CVE-2026-67868","references":[{"url":"https://github.com/gff-cw/information/issues/16","label":"cve@mitre.org"},{"url":"https://github.com/systerel/S2OPC/blob/b4c5c7d63cd69698461d514b905a7c92b3c377c4/src/ClientServer/services/b2c/monitored_item_event_filter_treatment_bs.c","label":"cve@mitre.org"},{"url":"https://github.com/systerel/S2OPC/blob/b4c5c7d63cd69698461d514b905a7c92b3c377c4/src/ClientServer/services/b2c/monitored_item_event_filter_where_clause_bs.c","label":"cve@mitre.org"},{"url":"https://github.com/systerel/S2OPC/tree/S2OPC_Toolkit_1.7.3/samples/ClientServer/demo_server_alarms","label":"cve@mitre.org"},{"url":"https://gitlab.com/systerel/S2OPC/-/work_items/1779","label":"cve@mitre.org"},{"url":"https://github.com/gff-cw/information/issues/16","label":"134c704f-9b21-4f2e-91b3-4a467353bcc0"}],"tags":["nvd"],"epss":0.00764,"epssPercentile":0.53919,"ingestedAt":"2026-09-09T16:14:05.513Z","slug":"CVE-2026-67868","body":"## Overview\n\nA heap-based out-of-bounds write vulnerability exists in S2OPC 1.7.3 in server-side EventFilter handling during CreateMonitoredItems processing. This allows a remote attacker to execute arbitrary code.\n\n## Remediation\n\nRefer to the linked advisories for vendor-supplied fixes and affected version ranges.","depth":"midnight","depthScore":54,"depthScoreParts":{"impact":53.9,"likelihood":0.2,"exploitation":0,"ransomware":0},"changes":[]}