CVE-2026-77207

{
  "etk_id": "ETK-2026-1855",
  "cve_id": "CVE-2026-77207",
  "display_id": "CVE-2026-77207",
  "ghsa_id": "GHSA-jf6r-wr9w-j67c",
  "euvd_id": "EUVD-2026-100749",
  "status": "published",
  "anchor_state": "anchored",
  "title": "Null pointer dereference in Libreswan PKCS#7 handling",
  "summary": "Libreswan is affected by a null pointer dereference while processing PKCS#7 data for IKE certificate authentication. An unauthenticated remote peer can cause the service to crash and restart by sending a crafted IKE authentication message; this can be repeated to deny service.",
  "mitigation": "No fixed version is identified in the available evidence. Restrict IKE access to trusted peers or networks and monitor for repeated service restarts until an upstream update can be applied.",
  "vendor": "The Libreswan Project",
  "product": "libreswan",
  "affected": [
    {
      "affected_notes": [],
      "affected_ranges": [
        ">= 4.7, <= 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": 0.0034,
  "epss_percentile": 0.2588,
  "epss_asof": "2026-10-20",
  "automation": "deterministic",
  "check": false,
  "check_confidence_basis": null,
  "exploit": false,
  "pipeline_minutes": 143.15946871666668,
  "t0_at": "2026-10-13T21:28:19.219000+00:00",
  "signals": {
    "trigger_signal": {
      "at": "2026-10-13T21:28:19.219000+00:00",
      "days": 0,
      "is_lower_bound": false,
      "measured_at": "2026-10-13T21:28:19.219000+00:00",
      "url": "https://github.com/advisories/GHSA-jf6r-wr9w-j67c"
    }
  }
}