CVE-2026-94453

{
  "etk_id": "ETK-2026-1857",
  "cve_id": "CVE-2026-94453",
  "display_id": "CVE-2026-94453",
  "ghsa_id": "GHSA-59fc-px6w-3g8v",
  "euvd_id": "EUVD-2026-100744",
  "status": "published",
  "anchor_state": "anchored",
  "title": "Use-after-free in Libreswan pluto IKE-over-TCP handling",
  "summary": "Libreswan's pluto daemon is affected when IKE over TCP is enabled. An unauthenticated remote attacker may trigger the flaw and disrupt VPN service; only deployments configured with `listen-tcp=yes` are exposed. Code execution is a possible but unconfirmed outcome.",
  "mitigation": "Disable IKE over TCP by removing or changing `listen-tcp=yes`, then reload or restart pluto. No fixed version is recorded in the provided package data; deploy a vendor-supported corrected release when one is identified.",
  "vendor": "The Libreswan Project",
  "product": "libreswan",
  "affected": [
    {
      "affected_notes": [],
      "affected_ranges": [
        ">= 4.0, <= 5.3.2",
        ">= 5.4, <= 5.4"
      ],
      "ecosystem": null,
      "fixed_versions": [],
      "package_name": "libreswan",
      "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": 0.0045,
  "epss_percentile": 0.381,
  "epss_asof": "2026-10-20",
  "automation": "contextual",
  "check": true,
  "check_confidence_basis": "assessed",
  "exploit": false,
  "pipeline_minutes": 24.989041,
  "t0_at": "2026-10-13T21:27:43.376000+00:00",
  "signals": {
    "check": {
      "at": "2026-10-18T10:25:20.889202+00:00",
      "days": 4.540017513912037,
      "is_lower_bound": false,
      "measured_at": "2026-10-13T21:27:43.376000+00:00",
      "url": null
    },
    "trigger_signal": {
      "at": "2026-10-13T21:27:43.376000+00:00",
      "days": 0,
      "is_lower_bound": false,
      "measured_at": "2026-10-13T21:27:43.376000+00:00",
      "url": "https://github.com/advisories/GHSA-59fc-px6w-3g8v"
    }
  }
}