CVE-2026-67861

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{"bugzilla": {"description": "open62541: open62541: Denial of Service via UA_Client_getRemoteDataTypes component", "id": "2511261", "url": "https://bugzilla.redhat.com/show_bug.cgi?id=2511261"}, "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-770", "details": ["An issue in open62541 v.1.5.5 and before allows a remote attacker to cause a denial of service via the UA_Client_getRemoteDataTypes component", "A flaw was found in open62541. A remote attacker can exploit a vulnerability in the `UA_Client_getRemoteDataTypes` component to cause a denial of service (DoS). This could make the affected system unavailable to legitimate users."], "name": "CVE-2026-67861", "public_date": "2026-08-04T00:00:00Z", "references": ["https://www.cve.org/CVERecord?id=CVE-2026-67861\nhttps://nvd.nist.gov/vuln/detail/CVE-2026-67861\nhttps://github.com/open62541/open62541/issues/8140\nhttps://raw.githubusercontent.com/open62541/open62541/v1.5.5/examples/custom_datatype/client_types_custom.c\nhttps://raw.githubusercontent.com/open62541/open62541/v1.5.5/src/client/ua_client_util.c"], "statement": "This is an Important denial of service vulnerability in the open62541 library. A remote, unauthenticated attacker can exploit a flaw in the `UA_Client_getRemoteDataTypes` component with low attack complexity, leading to high availability impact without user interaction or elevated privileges. This could render services utilizing the affected component unavailable.", "threat_severity": "Important"}

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