CVE-2026-91191

{
  "etk_id": "ETK-2026-23",
  "cve_id": "CVE-2026-91191",
  "display_id": "CVE-2026-91191",
  "ghsa_id": "GHSA-q7r9-65j5-94xj",
  "euvd_id": "EUVD-2026-89467",
  "status": "published",
  "anchor_state": "anchored",
  "title": "Improper package signature verification in Lantronix G520 Series",
  "summary": "Lantronix G520 Series gateways can accept packages whose authenticity is not reliably verified during package restoration and updates. An attacker who can supply a malicious package may execute code with root privileges; exposure depends on the attacker being able to influence the package source or installation path.",
  "mitigation": "Restrict access to package feeds, update mechanisms, and writable package storage, and prevent installation of untrusted packages. Apply a vendor firmware update that enforces signature validation and replaces the exposed trust key when one is available.",
  "vendor": "Lantronix",
  "product": "G520 Series",
  "affected": [
    {
      "affected_notes": [
        "2.6.0.4R6 stable"
      ],
      "affected_ranges": [],
      "ecosystem": null,
      "fixed_versions": [
        "2.6.0.7R6"
      ],
      "package_name": "G520 Series",
      "purl": null
    }
  ],
  "cwes": [
    347
  ],
  "cvss_score": 7.7,
  "cvss_src": "cna_vendor",
  "cvss_vector": "CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:P/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N",
  "epss_score": 0.0021,
  "epss_percentile": 0.105,
  "epss_asof": "2026-10-20",
  "automation": "contextual",
  "check": true,
  "check_confidence_basis": "assessed",
  "exploit": false,
  "pipeline_minutes": 20.57744635,
  "t0_at": "2026-09-29T21:04:52.546000+00:00",
  "signals": {
    "check": {
      "at": "2026-09-29T22:21:05.212119+00:00",
      "days": 0.052924376377314813,
      "is_lower_bound": false,
      "measured_at": "2026-09-29T21:04:52.546000+00:00",
      "url": null
    },
    "trigger_signal": {
      "at": "2026-09-29T21:04:52.546000+00:00",
      "days": 0,
      "is_lower_bound": false,
      "measured_at": "2026-09-29T21:04:52.546000+00:00",
      "url": "https://www.cve.org/CVERecord?id=CVE-2026-91191"
    }
  }
}