CVE-2026-57187

{
  "etk_id": "ETK-2026-2688",
  "cve_id": "CVE-2026-57187",
  "display_id": "CVE-2026-57187",
  "ghsa_id": null,
  "euvd_id": "EUVD-2026-110076",
  "status": "in_pipeline",
  "anchor_state": "anchored",
  "title": "Use-after-free in Asterisk PJSIP TCP/SDP handling",
  "summary": "Affected Asterisk and Certified Asterisk releases contain a use-after-free in PJSIP handling for TCP/SDP traffic. An authenticated attacker able to initiate a SIP INVITE over a connection-oriented transport and terminate the connection at the relevant point may trigger the flaw; the reported reproduction produced a crash only in Address Sanitizer builds.",
  "mitigation": "Upgrade Asterisk to 20.20.1, 21.12.3, 22.10.1, or 23.4.1, or upgrade Certified Asterisk to 20.7-cert11 or 22.8-cert3. Restrict SIP authentication and access to connection-oriented SIP transports until upgrades are complete.",
  "vendor": "asterisk",
  "product": "asterisk",
  "affected": [
    {
      "affected_notes": [],
      "affected_ranges": [
        "<= 20.20.0"
      ],
      "ecosystem": "other",
      "fixed_versions": [
        "20.20.1"
      ],
      "package_name": "asterisk",
      "purl": null
    },
    {
      "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": [
        "<= 20.7-cert10"
      ],
      "ecosystem": "other",
      "fixed_versions": [
        "20.7-cert11"
      ],
      "package_name": "certified-asterisk",
      "purl": null
    },
    {
      "affected_notes": [],
      "affected_ranges": [
        "<= 22.8-cert2"
      ],
      "ecosystem": "other",
      "fixed_versions": [
        "22.8-cert3"
      ],
      "package_name": "certified-asterisk",
      "purl": null
    }
  ],
  "cwes": [
    416
  ],
  "cvss_score": 7.1,
  "cvss_src": "cna_vendor",
  "cvss_vector": "CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N",
  "epss_score": null,
  "epss_percentile": null,
  "epss_asof": null,
  "automation": null,
  "check": false,
  "check_confidence_basis": null,
  "exploit": false,
  "pipeline_minutes": null,
  "t0_at": "2026-10-26T19:31:52.937000+00:00",
  "signals": {
    "trigger_signal": {
      "at": "2026-10-26T19:31:52.937000+00:00",
      "days": 0,
      "is_lower_bound": false,
      "measured_at": "2026-10-26T19:31:52.937000+00:00",
      "url": "https://www.cve.org/CVERecord?id=CVE-2026-57187"
    }
  }
}