CVE-2026-88964

{
  "etk_id": "ETK-2026-1558",
  "cve_id": "CVE-2026-88964",
  "display_id": "CVE-2026-88964",
  "ghsa_id": "GHSA-wm7f-2ghj-7r8c",
  "euvd_id": "EUVD-2026-100755",
  "status": "published",
  "anchor_state": "anchored",
  "title": "OpenVPN domain-search integer underflow",
  "summary": "OpenVPN 2.7_alpha3 through 2.7.7 on Windows and Android is affected when handling domain-search configuration received from a server. An authenticated remote VPN server may cause a client denial of service or disclose memory. Exploitation requires the client to connect to a server that is already trusted or authenticated.",
  "mitigation": "Restrict clients to approved, controlled VPN servers and prevent connections to untrusted server configurations. Monitor OpenVPN vendor and distribution updates and deploy a corrected package when one is provided.",
  "vendor": "OpenVPN",
  "product": "OpenVPN",
  "affected": [
    {
      "affected_notes": [],
      "affected_ranges": [
        ">= 2.7_alpha3, <= 2.7.7"
      ],
      "ecosystem": null,
      "fixed_versions": [],
      "package_name": "OpenVPN",
      "purl": null
    }
  ],
  "cwes": [
    191
  ],
  "cvss_score": 7.1,
  "cvss_src": "cna_vendor",
  "cvss_vector": "CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:L/VI:N/VA:H/SC:N/SI:N/SA:N",
  "epss_score": 0.0047,
  "epss_percentile": 0.3928,
  "epss_asof": "2026-10-21",
  "automation": "contextual",
  "check": false,
  "check_confidence_basis": null,
  "exploit": false,
  "pipeline_minutes": 15.852167166666666,
  "t0_at": "2026-10-13T22:15:08.905000+00:00",
  "signals": {
    "trigger_signal": {
      "at": "2026-10-13T22:15:08.905000+00:00",
      "days": 0,
      "is_lower_bound": false,
      "measured_at": "2026-10-13T22:15:08.905000+00:00",
      "url": "https://www.cve.org/CVERecord?id=CVE-2026-88964"
    }
  }
}