CVE-2026-96185 Microsoft Exchange Online Remote Code Execution Vulnerability

{
  "id": "0d58625e4e59568c8c70f29f4ab39122481997efd4368d5d0fe01936e6570bbd",
  "url": "https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-96185",
  "method": "llm",
  "payload": {
    "kind": "advisory",
    "title": "CVE-2026-96185 Microsoft Exchange Online Remote Code Execution Vulnerability",
    "summary": "A stack-based buffer overflow in Microsoft Exchange Online may allow an authorized attacker to execute code over a network.",
    "evidence": "Stack-based buffer overflow in Microsoft Exchange Online allows an authorized attacker to execute code over a network.",
    "products": [
      {
        "name": {
          "value": "Microsoft Exchange Online",
          "evidence": "Stack-based buffer overflow in Microsoft Exchange Online allows an authorized attacker to execute code over a network."
        },
        "prerequisites": [
          {
            "value": "authorized attacker",
            "evidence": "allows an authorized attacker to execute code over a network"
          }
        ],
        "fixed_versions": [],
        "affected_versions": []
      }
    ],
    "severity": "unknown",
    "fixed_cves": [],
    "related_cves": [
      {
        "value": "CVE-2026-96185",
        "evidence": "CVE-2026-96185 Microsoft Exchange Online Remote Code Execution Vulnerability"
      }
    ],
    "security_relevant": true,
    "severity_evidence": null
  },
  "source_id": "official-microsoft-security-updates",
  "document_id": 24291,
  "published_at": "2026-10-22T14:00:00+00:00"
}