CVE-2026-88201 Microsoft Office Excel Information Disclosure Vulnerability

{
  "id": "657c168c185c60875475832f401311d3c1c4495238c068bdf7a5ab5f9811097d",
  "url": "https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-88201",
  "method": "llm",
  "payload": {
    "kind": "advisory",
    "title": "CVE-2026-88201 Microsoft Office Excel Information Disclosure Vulnerability",
    "summary": "A buffer over-read in Microsoft Office Excel allows an unauthorized attacker to disclose information over a network.",
    "evidence": "Buffer over-read in Microsoft Office Excel allows an unauthorized attacker to disclose information over a network.",
    "products": [
      {
        "name": {
          "value": "Microsoft Office Excel",
          "evidence": "Buffer over-read in Microsoft Office Excel allows an unauthorized attacker to disclose information over a network."
        },
        "prerequisites": [],
        "fixed_versions": [],
        "affected_versions": []
      }
    ],
    "severity": "unknown",
    "fixed_cves": [],
    "related_cves": [
      {
        "value": "CVE-2026-88201",
        "evidence": "CVE-2026-88201 Microsoft Office Excel Information Disclosure Vulnerability"
      }
    ],
    "security_relevant": true,
    "severity_evidence": null
  },
  "source_id": "official-microsoft-security-updates",
  "document_id": 25320,
  "published_at": "2026-10-13T14:00:00+00:00"
}