CVE-2026-88164

{
  "etk_id": "ETK-2026-1627",
  "cve_id": "CVE-2026-88164",
  "display_id": "CVE-2026-88164",
  "ghsa_id": "GHSA-f79v-hgcp-26cg",
  "euvd_id": "EUVD-2026-101506",
  "status": "published",
  "anchor_state": "anchored",
  "title": "Missing authorization in Microsoft SharePoint Server Subscription Edition",
  "summary": "Microsoft SharePoint Server Subscription Edition contains a missing-authorization vulnerability. An attacker with valid low-privileged access can elevate privileges over the network. Exploitation requires authorized access to the affected SharePoint environment.",
  "mitigation": "Update Microsoft SharePoint Server Subscription Edition to version 16.0.20326.20190 or later. Restrict and review low-privileged SharePoint accounts until the update is deployed.",
  "vendor": "microsoft",
  "product": "Microsoft SharePoint Server Subscription Edition",
  "affected": [
    {
      "affected_notes": [],
      "affected_ranges": [
        ">= 16.0.0, < 16.0.20326.20190"
      ],
      "ecosystem": null,
      "fixed_versions": [
        "16.0.20326.20190"
      ],
      "package_name": "Microsoft SharePoint Server Subscription Edition",
      "purl": null
    }
  ],
  "cwes": null,
  "cvss_score": 8.8,
  "cvss_src": "cna_vendor",
  "cvss_vector": "CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H",
  "epss_score": 0.0074,
  "epss_percentile": 0.5387,
  "epss_asof": "2026-10-20",
  "automation": "contextual",
  "check": false,
  "check_confidence_basis": null,
  "exploit": false,
  "pipeline_minutes": 35.27861083333333,
  "t0_at": "2026-10-14T17:50:07.799000+00:00",
  "signals": {
    "trigger_signal": {
      "at": "2026-10-14T17:50:07.799000+00:00",
      "days": 0,
      "is_lower_bound": false,
      "measured_at": "2026-10-14T17:50:07.799000+00:00",
      "url": "https://github.com/advisories/GHSA-f79v-hgcp-26cg"
    }
  }
}