{
  "id": "CVE-2026-106803",
  "url": "https://spydr.io/cve/CVE-2026-106803",
  "published": "2026-11-02T17:17:33.270Z",
  "modified": "2026-11-03T14:17:17.387Z",
  "score": 9.8,
  "severity": "critical",
  "cvss_version": "3.1",
  "vector": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H",
  "score_source": "CISA ADP",
  "epss": 0.00285,
  "epss_percentile": 0.211,
  "exploited": false,
  "kev": null,
  "ssvc_exploitation": "poc",
  "vendors": [],
  "products": [],
  "cwes": [
    "CWE-121"
  ],
  "description": "A stack-based buffer overflow exists in Kamailio v6.1.3 and v6.1.4 in the ims_registrar_pcscf module. When processing a crafted application/reginfo+xml NOTIFY message, process_contact() copies an attacker-controlled port value from the alias parameter into a fixed 5-byte stack buffer without validating its length. An unauthenticated remote attacker can trigger stack corruption and terminate the P-CSCF process, resulting in denial of service.",
  "status": "Awaiting Analysis",
  "score_type": "Secondary",
  "scores": {
    "cvss_v40": null,
    "cvss_v31": 9.8,
    "cvss_v30": null
  },
  "references": [
    {
      "url": "https://gist.github.com/hackeryounow/7d7ccc9ec501a5d8c9143b2e1bcc11cb",
      "tags": []
    },
    {
      "url": "https://github.com/kamailio/kamailio/commit/21261436492f0014930e804e20586e3833bb91b9",
      "tags": []
    },
    {
      "url": "https://github.com/kamailio/kamailio/issues/4954",
      "tags": []
    },
    {
      "url": "https://github.com/kamailio/kamailio/pull/4958",
      "tags": []
    }
  ],
  "nvd_url": "https://nvd.nist.gov/vuln/detail/CVE-2026-106803",
  "covered_in": [],
  "attribution": [
    {
      "source": "NVD",
      "url": "https://nvd.nist.gov",
      "notice": "This product uses data from the NVD API but is not endorsed or certified by the NVD."
    },
    {
      "source": "CISA KEV",
      "url": "https://www.cisa.gov/known-exploited-vulnerabilities-catalog",
      "notice": "Known exploited vulnerabilities from the CISA KEV catalog."
    },
    {
      "source": "FIRST EPSS",
      "url": "https://www.first.org/epss",
      "notice": "Exploit prediction scores from FIRST EPSS."
    }
  ]
}