CVE-2026-123999

{
  "etk_id": "ETK-2026-3984",
  "cve_id": "CVE-2026-123999",
  "display_id": "CVE-2026-123999",
  "ghsa_id": "GHSA-gmhw-vmwr-wrxh",
  "euvd_id": "EUVD-2026-120222",
  "status": "published",
  "anchor_state": "anchored",
  "title": "Heap buffer overflow in ION-DTN nm_mgr",
  "summary": "ION-DTN 3.6.2 through 4.2.0 includes a heap buffer overflow in the nm_mgr network-management daemon. An agent able to submit unusually nested AMP data through the UDP CLA/AMP service, or a local user exercising the relevant UI path, may cause nm_mgr to stop and disrupt telemetry visibility.",
  "mitigation": "Upgrade ION-DTN to 4.2.1-a.2 or later.",
  "vendor": "nasa-jpl",
  "product": "ION-DTN",
  "affected": [
    {
      "affected_notes": [],
      "affected_ranges": [
        "3.6.2 <= 4.2.0"
      ],
      "ecosystem": "other",
      "fixed_versions": [
        "4.2.1-a.2"
      ],
      "package_name": "ION-DTN",
      "purl": null
    }
  ],
  "cwes": [
    122
  ],
  "cvss_score": 8.7,
  "cvss_src": "cna_vendor",
  "cvss_vector": "CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N",
  "epss_score": null,
  "epss_percentile": null,
  "epss_asof": null,
  "automation": "contextual",
  "check": true,
  "check_confidence_basis": "assessed",
  "exploit": false,
  "pipeline_minutes": 18.796874516666666,
  "t0_at": "2026-11-09T18:41:33.110000+00:00",
  "signals": {
    "check": {
      "at": "2026-11-09T19:16:07.883973+00:00",
      "days": 0.024013587650462964,
      "is_lower_bound": false,
      "measured_at": "2026-11-09T18:41:33.110000+00:00",
      "url": null
    },
    "trigger_signal": {
      "at": "2026-11-09T18:41:33.110000+00:00",
      "days": 0,
      "is_lower_bound": false,
      "measured_at": "2026-11-09T18:41:33.110000+00:00",
      "url": "https://www.cve.org/CVERecord?id=CVE-2026-123999"
    }
  }
}