CVE-2026-82623

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{"bugzilla": {"description": "open62541: open62541: Denial of service via use-after-free vulnerability", "id": "2526143", "url": "https://bugzilla.redhat.com/show_bug.cgi?id=2526143"}, "csaw": false, "cvss3": {"cvss3_base_score": "7.5", "cvss3_scoring_vector": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H", "status": "draft"}, "cwe": "CWE-825", "details": ["A vulnerability was detected in open62541 up to 1.5.5. Affected by this vulnerability is the function UA_DataValue_backend_copyRange of the file plugins/historydata/ua_history_data_backend_memory.c of the component History Backend. The manipulation results in use after free. The attack can be launched remotely. The exploit is now public and may be used. The project closed the issue report, stating that this is not the official way to report a security vulnerability.", "A flaw was found in open62541. A remote attacker could exploit a use-after-free vulnerability in the `UA_DataValue_backend_copyRange` function within the History Backend component. This flaw could lead to a denial of service, making the affected system unavailable."], "mitigation": {"lang": "en:us", "value": "Update open62541 to version 1.5.6 or later."}, "name": "CVE-2026-82623", "public_date": "2026-08-31T06:15:08Z", "references": ["https://www.cve.org/CVERecord?id=CVE-2026-82623\nhttps://nvd.nist.gov/vuln/detail/CVE-2026-82623\nhttps://github.com/open62541/open62541/\nhttps://github.com/open62541/open62541/issues/8199\nhttps://vuldb.com/cve/CVE-2026-82623\nhttps://vuldb.com/submit/893207\nhttps://vuldb.com/vuln/397123\nhttps://vuldb.com/vuln/397123/cti"], "statement": "The open62541 library is not shipped in any Red Hat product. It is available in the Fedora community distribution, which already ships version 1.5.6, beyond the affected range (up to 1.5.5).", "threat_severity": "Important"}

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