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{"bugzilla": {"description": "open62541: open62541: Heap-based buffer overflow in HistoryRead path", "id": "2511285", "url": "https://bugzilla.redhat.com/show_bug.cgi?id=2511285"}, "csaw": false, "cvss3": {"cvss3_base_score": "8.2", "cvss3_scoring_vector": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:H", "status": "draft"}, "cwe": "CWE-120", "details": ["open62541 1.5.5 contains a heap-based buffer overflow in the default HistoryRead path when the default history database is used with the memory backend.", "A flaw was found in open62541, an open-source OPC UA (Open Platform Communications Unified Architecture) toolkit. This vulnerability is a heap-based buffer overflow occurring in the default HistoryRead path when the default history database uses a memory backend. An attacker could exploit this to cause a denial of service, making the system unavailable, or potentially achieve arbitrary code execution, gaining unauthorized control."], "name": "CVE-2026-67860", "public_date": "2026-08-04T00:00:00Z", "references": ["https://www.cve.org/CVERecord?id=CVE-2026-67860\nhttps://nvd.nist.gov/vuln/detail/CVE-2026-67860\nhttps://github.com/open62541/open62541/issues/8091"], "statement": "An Important heap-based buffer overflow flaw was found in open62541, affecting its default HistoryRead path when utilizing the memory backend for the history database. This vulnerability could allow a remote attacker to trigger a denial of service or potentially execute arbitrary code, impacting the availability and integrity of systems running the affected component in Red Hat community projects.", "threat_severity": "Important"}