CVE-2026-67864

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{"bugzilla": {"description": "open62541: open62541: Denial of Service via NodeManagement type-instantiation logic", "id": "2511834", "url": "https://bugzilla.redhat.com/show_bug.cgi?id=2511834"}, "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-1287", "details": ["An issue in open62541 v.1.5.5 and before allows a remote attacker to cause a denial of service via the NodeManagement type-instantiation logic component", "A flaw was found in open62541. A remote attacker can exploit a vulnerability in the NodeManagement type-instantiation logic component, leading to a denial of service (DoS). This can make the affected system unavailable to legitimate users."], "name": "CVE-2026-67864", "public_date": "2026-08-05T00:00:00Z", "references": ["https://www.cve.org/CVERecord?id=CVE-2026-67864\nhttps://nvd.nist.gov/vuln/detail/CVE-2026-67864\nhttps://github.com/open62541/open62541/blob/v1.5.5/examples/ci_server.c\nhttps://github.com/open62541/open62541/blob/v1.5.5/plugins/ua_accesscontrol_default.c\nhttps://github.com/open62541/open62541/blob/v1.5.5/src/server/ua_services_nodemanagement.c\nhttps://github.com/open62541/open62541/issues/8133"], "statement": "This is an Important denial of service flaw in open62541, as a remote unauthenticated attacker can exploit the NodeManagement type-instantiation logic. This vulnerability does not require user interaction or elevated privileges, making it a significant risk for systems exposing open62541 services to untrusted networks.", "threat_severity": "Important"}

{"affected": [{"configurations": [{"platform": null, "status": "affected", "versions": {"scheme": "semver", "value": "[0,1.5.5]"}}], "enrichment": {"confidence": 95.0, "confidence_source": "inferred", "scores": [{"score": 95.0, "source": "inferred"}, {"score": 100.0, "source": "matching"}]}, "original": {"product": "n/a", "source": "cna", "vendor": "n/a"}, "product": "open62541", "vendor": "open62541"}], "created": "2026-08-06T00:00:10.926739+00:00", "updated": "2026-08-11T02:15:03.916276+00:00", "vendors": ["open62541", "open62541$PRODUCT$open62541"]}