Improper timeout handling in CODESYS EtherNetIP_CVE-2026-35225

{
    "lastseen": "",
    "description": "An unauthenticated remote attacker is able to exhaust all available TCP connections in the CODESYS EtherNet/IP adapter stack, preventing legitimate clients from establishing new connections.",
    "published": "2026-04-23T13:54:51.863Z",
    "modified": "2026-04-23T13:54:51.863Z",
    "type": "cve",
    "title": "Improper timeout handling in CODESYS EtherNetIP",
    "source": "CERTVDE",
    "references": "https://codesys.csaf-tp.certvde.com/.well-known/csaf/white/2026/advisory2026-04_vde-2026-040.json\nhttps://www.certvde.com/en/advisories/VDE-2026-040/",
    "id": "CVE-2026-35225",
    "bulletinFamily": "",
    "cwe": [
        "CWE-754"
    ],
    "cvelist": null,
    "sourceData": "CODESYS CODESYS EtherNetIP 1.0.0.0",
    "sourceHref": "",
    "cvss": {
        "score": 8.7,
        "severity": "HIGH",
        "vector": "CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N",
        "version": "4.0"
    },
    "cvss2": [],
    "cvss3": {
        "version": "",
        "vectorString": "",
        "baseScore": 0,
        "baseSeverity": "",
        "attackVector": "",
        "attackComplexity": "",
        "privilegesRequired": "",
        "userInteraction": "",
        "scope": "",
        "confidentialityImpact": "",
        "integrityImpact": "",
        "availabilityImpact": "",
        "cvssV3": {
            "version": "",
            "vectorString": "",
            "baseScore": 0,
            "baseSeverity": "",
            "attackVector": "",
            "attackComplexity": "",
            "privilegesRequired": "",
            "userInteraction": "",
            "scope": "",
            "confidentialityImpact": "",
            "integrityImpact": "",
            "availabilityImpact": ""
        }
    },
    "href": "",
    "category_name": "CVE",
    "post_link": "",
    "product": "CODESYS EtherNetIP",
    "version": "1.0.0.0",
    "vendor": "CODESYS",
    "ai_description": "Improper timeout handling in CODESYS EtherNetIP allows an unauthenticated remote attacker to exhaust TCP connections, preventing new connections.",
    "ai_severity": "High",
    "ai_vendor": "3S-Smart Software Solutions GmbH",
    "ai_product": "CODESYS EtherNetIP",
    "ai_version": "1.0.0.0",
    "ai_score": 8.7
}