Incorrect Default Permissions in CODESYS Development System_CVE-2026-44469

{
    "lastseen": "",
    "description": "The affected product extracts installation files to a temporary directory with incorrect default permissions during administrative installation. A low-privileged local attacker can exploit a TOCTOU race condition with a practical time window to replace verified files with malicious ones before installation, resulting in local privilege escalation.",
    "published": "2026-05-26T06:39:04.477Z",
    "modified": "2026-05-26T06:39:04.477Z",
    "type": "cve",
    "title": "Incorrect Default Permissions in CODESYS Development System",
    "source": "CERTVDE",
    "references": "https://www.certvde.com/en/advisories/VDE-2026-055/",
    "id": "CVE-2026-44469",
    "bulletinFamily": "",
    "cwe": [
        "CWE-276"
    ],
    "cvelist": null,
    "sourceData": "CODESYS CODESYS Development System 3.0.0.0",
    "sourceHref": "",
    "cvss": {
        "score": 8.5,
        "severity": "HIGH",
        "vector": "CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:H/VI:H/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 Development System",
    "version": "3.0.0.0",
    "vendor": "CODESYS",
    "ai_description": "Local privilege escalation due to incorrect default permissions in temporary directory",
    "ai_severity": "High",
    "ai_vendor": "3S-Smart Software Solutions GmbH",
    "ai_product": "CODESYS Development System",
    "ai_version": "3.0.0.0",
    "ai_score": 8.5
}