CVE-2026-108105

{
  "etk_id": "ETK-2026-1080",
  "cve_id": "CVE-2026-108105",
  "display_id": "CVE-2026-108105",
  "ghsa_id": "GHSA-9crh-64c8-56q6",
  "euvd_id": "EUVD-2026-95795",
  "status": "published",
  "anchor_state": "anchored",
  "title": "Assertion denial of service in Open5GS MME",
  "summary": "Open5GS MME releases through 2.8.0 can terminate when processing malformed SGSN address information in a GTPv1-C request. An unauthenticated remote party could disrupt MME service and affect subscribers if it can send traffic from a configured SGSN source and knows a target UE IMSI or P-TMSI.",
  "mitigation": "Restrict GTPv1-C ingress to authorized SGSN peers and enforce source-address filtering at network boundaries. Monitor for an Open5GS update that corrects this issue; no fixed version is recorded in the advisory.",
  "vendor": "open5gs",
  "product": "open5gs",
  "affected": [
    {
      "affected_notes": [],
      "affected_ranges": [
        "<= 2.7.5"
      ],
      "ecosystem": "other",
      "fixed_versions": [],
      "package_name": "open5gs",
      "purl": null
    }
  ],
  "cwes": [
    617
  ],
  "cvss_score": 8.2,
  "cvss_src": "cna_vendor",
  "cvss_vector": "CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N",
  "epss_score": 0.0052,
  "epss_percentile": 0.4322,
  "epss_asof": "2026-10-20",
  "automation": "contextual",
  "check": false,
  "check_confidence_basis": null,
  "exploit": false,
  "pipeline_minutes": 73.34916566666666,
  "t0_at": "2026-10-09T14:08:16.163000+00:00",
  "signals": {
    "trigger_signal": {
      "at": "2026-10-09T14:08:16.163000+00:00",
      "days": 0,
      "is_lower_bound": false,
      "measured_at": "2026-10-09T14:08:16.163000+00:00",
      "url": "https://www.cve.org/CVERecord?id=CVE-2026-108105"
    }
  }
}