CVE-2026-57186

{
  "etk_id": "ETK-2026-2799",
  "cve_id": "CVE-2026-57186",
  "display_id": "CVE-2026-57186",
  "ghsa_id": "GHSA-h5hv-jmgj-92q2",
  "euvd_id": "EUVD-2026-111395",
  "status": "published",
  "anchor_state": "anchored",
  "title": "Input validation flaw in Asterisk chan_ooh323",
  "summary": "Asterisk deployments using the optional chan_ooh323 driver are affected in the listed 21, 22, and 23 release lines before their respective fixed versions. A remote party able to reach the driver's port can send malformed signaling data that crashes Asterisk; the driver must have been explicitly built and installed.",
  "mitigation": "Upgrade Asterisk to 21.12.3, 22.10.1, or 23.4.1, or upgrade Certified Asterisk to 22.8-cert3. Until upgraded, disable or remove chan_ooh323 and restrict network access to its port.",
  "vendor": "asterisk",
  "product": "asterisk",
  "affected": [
    {
      "affected_notes": [],
      "affected_ranges": [
        "<= 21.12.2"
      ],
      "ecosystem": "other",
      "fixed_versions": [
        "21.12.3"
      ],
      "package_name": "asterisk",
      "purl": null
    },
    {
      "affected_notes": [],
      "affected_ranges": [
        "<= 22.10.0"
      ],
      "ecosystem": "other",
      "fixed_versions": [
        "22.10.1"
      ],
      "package_name": "asterisk",
      "purl": null
    },
    {
      "affected_notes": [],
      "affected_ranges": [
        "<= 23.4.0"
      ],
      "ecosystem": "other",
      "fixed_versions": [
        "23.4.1"
      ],
      "package_name": "asterisk",
      "purl": null
    },
    {
      "affected_notes": [],
      "affected_ranges": [
        "<= 22.8-cert2"
      ],
      "ecosystem": "other",
      "fixed_versions": [
        "22.8-cert3"
      ],
      "package_name": "certified-asterisk",
      "purl": null
    }
  ],
  "cwes": [
    839
  ],
  "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": null,
  "epss_percentile": null,
  "epss_asof": null,
  "automation": "deterministic",
  "check": false,
  "check_confidence_basis": null,
  "exploit": false,
  "pipeline_minutes": 87.16591478333333,
  "t0_at": "2026-10-27T21:21:55.833000+00:00",
  "signals": {
    "trigger_signal": {
      "at": "2026-10-27T21:21:55.833000+00:00",
      "days": 0,
      "is_lower_bound": false,
      "measured_at": "2026-10-27T21:21:55.833000+00:00",
      "url": "https://www.cve.org/CVERecord?id=CVE-2026-57186"
    }
  }
}