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        "cveId": "CVE-2026-67858",
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        "assignerShortName": "mitre",
        "dateUpdated": "2026-08-05T14:33:03.806Z",
        "dateReserved": "2026-07-30T00:00:00.000Z",
        "datePublished": "2026-08-04T00:00:00.000Z"
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                    "lang": "en",
                    "value": "Buffer Overflow vulnerability exists in open62541 1.5.5 when the Local Discovery Server (LDS) is built with multicast discovery enabled through the MDNSD backend. An unauthenticated remote attacker can send a RegisterServer or RegisterServer2 request containing many unique discoveryUrls. This allows remote attackers to cause a denial of service."
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                    "url": "https://github.com/open62541/open62541/issues/8094"
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                {
                    "url": "https://github.com/open62541/open62541/tree/master/examples/discovery"
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                    "url": "https://github.com/open62541/open62541/blob/master/src/server/ua_services_discovery.c"
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                    "url": "https://github.com/open62541/open62541/blob/master/src/server/ua_discovery_mdns.c"
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                        "attackVector": "NETWORK",
                        "attackComplexity": "LOW",
                        "privilegesRequired": "NONE",
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                        "scope": "UNCHANGED",
                        "confidentialityImpact": "NONE",
                        "integrityImpact": "NONE",
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                        "baseScore": 7.5,
                        "baseSeverity": "HIGH"
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                                "timestamp": "2026-08-05T14:32:31.553656Z",
                                "id": "CVE-2026-67858",
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