CVE-2026-62721 Windows User-Mode Power Service (UMPS) Elevation of Privilege Vulnerability

{
  "id": "749bd7ac63dc31f15f98ca25baf812c11bc361706183d92692af08a458e3b0f6",
  "url": "https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-62721",
  "method": "llm",
  "payload": {
    "kind": "patch",
    "title": "CVE-2026-62721 Windows User-Mode Power Service (UMPS) Elevation of Privilege Vulnerability",
    "summary": "Microsoft added links to Windows 11 security updates to address a missed fix and recommends installing them as soon as possible.",
    "evidence": "The CVE was updated with links to security updates for Windows 11, version 26H1, 25H2, and 24H2 to address a missed fix.",
    "products": [
      {
        "name": {
          "value": "Windows 11",
          "evidence": "security updates for Windows 11, version 26H1, 25H2, and 24H2"
        },
        "prerequisites": [],
        "fixed_versions": [
          {
            "value": "26H1",
            "evidence": "security updates for Windows 11, version 26H1, 25H2, and 24H2"
          },
          {
            "value": "25H2",
            "evidence": "security updates for Windows 11, version 26H1, 25H2, and 24H2"
          },
          {
            "value": "24H2",
            "evidence": "security updates for Windows 11, version 26H1, 25H2, and 24H2"
          }
        ],
        "affected_versions": []
      }
    ],
    "severity": "unknown",
    "fixed_cves": [],
    "related_cves": [
      {
        "value": "CVE-2026-62721",
        "evidence": "CVE-2026-62721 Windows User-Mode Power Service (UMPS) Elevation of Privilege Vulnerability"
      }
    ],
    "security_relevant": true,
    "severity_evidence": null
  },
  "source_id": "official-microsoft-security-updates",
  "document_id": 26385,
  "published_at": "2026-09-14T14:00:00+00:00"
}