CVE-2026-97801 .NET Framework Tampering Vulnerability

{
  "id": "c015704c3a47268a77fc261f2f4fcc6e2b12eadd7f543ce5ea481ed0c303fc35",
  "url": "https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-97801",
  "method": "llm",
  "payload": {
    "kind": "advisory",
    "title": "CVE-2026-97801 .NET Framework Tampering Vulnerability",
    "summary": "Improper input validation in .NET Framework could allow an unauthorized attacker to perform tampering over a network.",
    "evidence": "Improper validation of specified type of input in .NET Framework allows an unauthorized attacker to perform tampering over a network.",
    "products": [
      {
        "name": {
          "value": ".NET Framework",
          "evidence": ".NET Framework"
        },
        "prerequisites": [],
        "fixed_versions": [],
        "affected_versions": []
      }
    ],
    "severity": "unknown",
    "fixed_cves": [],
    "related_cves": [
      {
        "value": "CVE-2026-97801",
        "evidence": "CVE-2026-97801"
      }
    ],
    "security_relevant": true,
    "severity_evidence": null
  },
  "source_id": "official-microsoft-security-updates",
  "document_id": 25961,
  "published_at": "2026-10-13T14:00:00+00:00"
}