CVE-2026-75352

{
  "etk_id": "ETK-2026-2000",
  "cve_id": "CVE-2026-75352",
  "display_id": "CVE-2026-75352",
  "ghsa_id": "GHSA-fgff-hw4c-vx3q",
  "euvd_id": "EUVD-2026-95972",
  "status": "published",
  "anchor_state": "anchored",
  "title": "Integer underflow in OpENer EtherNet/IP ForwardOpen parser",
  "summary": "OpENer version 2.3 at commit 76b95cf is affected by an integer underflow in the server-side EtherNet/IP ForwardOpen connection-path parser. A remote attacker may cause a denial of service by reaching the affected service. Exposure requires the vulnerable EtherNet/IP service to be network-accessible.",
  "mitigation": "Restrict network access to the OpENer EtherNet/IP service to trusted hosts and segments. Apply an upstream update when a release containing a fix is available; the supplied evidence does not identify a fixed version.",
  "vendor": null,
  "product": "OpENer",
  "affected": [
    {
      "affected_notes": [
        "n/a"
      ],
      "affected_ranges": [],
      "ecosystem": null,
      "fixed_versions": [],
      "package_name": "n/a",
      "purl": null
    }
  ],
  "cwes": null,
  "cvss_score": 7.5,
  "cvss_src": "cna_vendor",
  "cvss_vector": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H",
  "epss_score": 0.0033,
  "epss_percentile": 0.2497,
  "epss_asof": "2026-10-20",
  "automation": "contextual",
  "check": false,
  "check_confidence_basis": null,
  "exploit": false,
  "pipeline_minutes": 33.44979525,
  "t0_at": "2026-10-09T00:00:00+00:00",
  "signals": {
    "trigger_signal": {
      "at": "2026-10-09T00:00:00+00:00",
      "days": 0,
      "is_lower_bound": false,
      "measured_at": "2026-10-09T00:00:00+00:00",
      "url": "https://github.com/advisories/GHSA-fgff-hw4c-vx3q"
    }
  }
}