KnowledgeDeliver deployments before February 24, 2026 use a static ASP.NET/IIS machineKey value_CVE-2026-5426

{
    "lastseen": "",
    "description": "Hard-coded ASP.NET/IIS machineKey value in Digital Knowledge KnowledgeDeliver deployments prior to February 24, 2026 allows adversaries to circumvent ViewState validation mechanisms and achieve remote code execution via malicious ViewState deserialization attacks",
    "published": "2026-04-16T15:18:46.224Z",
    "modified": "2026-04-18T02:31:32.234Z",
    "type": "cve",
    "title": "KnowledgeDeliver deployments before February 24, 2026 use a static ASP.NET/IIS machineKey value",
    "source": "Mandiant",
    "references": "https://github.com/mandiant/Vulnerability-Disclosures/blob/master/2026/MNDT-2026-0009.md\nhttps://www.digital-knowledge.co.jp/product/kd/",
    "id": "CVE-2026-5426",
    "bulletinFamily": "",
    "cwe": [
        "CWE-321",
        "CWE-502"
    ],
    "cvelist": null,
    "sourceData": "Digital Knowledge KnowledgeDeliver 0",
    "sourceHref": "",
    "cvss": {
        "score": 7.5,
        "severity": "HIGH",
        "vector": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N",
        "version": "3.1"
    },
    "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": "KnowledgeDeliver",
    "version": "0",
    "vendor": "Digital Knowledge",
    "ai_description": "",
    "ai_severity": "",
    "ai_vendor": "",
    "ai_product": "",
    "ai_version": "",
    "ai_score": 0
}