CVE-2026-123957

{
  "etk_id": "ETK-2026-3813",
  "cve_id": "CVE-2026-123957",
  "display_id": "CVE-2026-123957",
  "ghsa_id": "GHSA-wxh7-x4wq-j3rp",
  "euvd_id": "EUVD-2026-118996",
  "status": "published",
  "anchor_state": "anchored",
  "title": "Buffer overflow in TOTOLINK CA300-PoE QoS rule handling",
  "summary": "TOTOLINK CA300-PoE firmware 6.2c.884 is affected by a buffer overflow in the CGI handler for QoS rule settings. A remote attacker with low-privileged access may trigger the flaw and compromise device confidentiality, integrity, or availability.",
  "mitigation": "Restrict router management and CGI access to trusted, authenticated administrative networks, and do not expose it to the internet. Monitor for a vendor firmware update and apply it promptly when available.",
  "vendor": "TOTOLINK",
  "product": "CA300-PoE",
  "affected": [
    {
      "affected_notes": [],
      "affected_ranges": [
        "6.2c.884"
      ],
      "ecosystem": null,
      "fixed_versions": [],
      "package_name": "CA300-PoE",
      "purl": null
    }
  ],
  "cwes": [
    120
  ],
  "cvss_score": 9.4,
  "cvss_src": "cna_vendor",
  "cvss_vector": "CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:H/VI:H/VA:H/SC:H/SI:H/SA:H/E:P",
  "epss_score": null,
  "epss_percentile": null,
  "epss_asof": null,
  "automation": "contextual",
  "check": false,
  "check_confidence_basis": null,
  "exploit": false,
  "pipeline_minutes": 9.782662333333333,
  "t0_at": "2026-11-07T08:15:13.072000+00:00",
  "signals": {
    "trigger_signal": {
      "at": "2026-11-07T08:15:13.072000+00:00",
      "days": 0,
      "is_lower_bound": false,
      "measured_at": "2026-11-07T08:15:13.072000+00:00",
      "url": "https://www.cve.org/CVERecord?id=CVE-2026-123957"
    }
  }
}