CVE-2026-69646 Skype for Business Spoofing Vulnerability

{
  "id": "5270eca967e09db651b584d00619197b89d8f9b7cbdeea4af1c802a3dc7ea278",
  "url": "https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-69646",
  "method": "llm",
  "payload": {
    "kind": "advisory",
    "title": "CVE-2026-69646 Skype for Business Spoofing Vulnerability",
    "summary": "Improper cryptographic signature verification in Skype for Business could allow an unauthorized attacker to perform spoofing over an adjacent network.",
    "evidence": "Improper verification of cryptographic signature in Skype for Business allows an unauthorized attacker to perform spoofing over an adjacent network.",
    "products": [
      {
        "name": {
          "value": "Skype for Business",
          "evidence": "CVE-2026-69646 Skype for Business Spoofing Vulnerability"
        },
        "prerequisites": [],
        "fixed_versions": [],
        "affected_versions": []
      }
    ],
    "severity": "unknown",
    "fixed_cves": [],
    "related_cves": [
      {
        "value": "CVE-2026-69646",
        "evidence": "CVE-2026-69646 Skype for Business Spoofing Vulnerability"
      }
    ],
    "security_relevant": true,
    "severity_evidence": null
  },
  "source_id": "official-microsoft-security-updates",
  "document_id": 26643,
  "published_at": "2026-09-08T14:00:00+00:00"
}