{"id":"CVE-2026-67860","published":"2026-08-04T22:17:16.357","lastModified":"2026-08-05T19:17:33.480","description":"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.","cvssScore":7.5,"cvssSeverity":"HIGH","cvssVector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H","cwes":["CWE-122"],"vendors":[],"products":[],"references":[{"url":"https://github.com/open62541/open62541/issues/8091","tags":[]},{"url":"https://github.com/open62541/open62541/issues/8091","tags":[]}],"exploitRefs":[{"url":"https://github.com/open62541/open62541/issues/8091","tags":[]},{"url":"https://github.com/open62541/open62541/issues/8091","tags":[]}],"hasPoc":true,"ai":{"summary":"The flaw is a heap-based buffer overflow in open62541 1.5.5's HistoryRead path when using the default memory backend history database, allowing potential code execution if exploited.","exploitability":"Exploitation requires specific configuration and access to the affected version of open62541, making it moderately difficult but feasible with the right conditions.","blast_radius":"If exploited, this vulnerability could lead to full system compromise on devices running the affected software, potentially impacting industrial control systems or other critical infrastructure.","remediation":"Upgrade to a non-vulnerable version of open62541 or disable the default history database feature until a patch is available.","tags":["buffer-overflow","ics","memory-backend","heap-overflow"],"model":"qwen2.5:7b-instruct","analyzedAt":"2026-08-11T06:55:45.853Z"}}