CVE-2026-101283

{
  "etk_id": "ETK-2026-161",
  "cve_id": "CVE-2026-101283",
  "display_id": "CVE-2026-101283",
  "ghsa_id": "GHSA-pwcx-5qh6-2pxc",
  "euvd_id": "EUVD-2026-90389",
  "status": "published",
  "anchor_state": "anchored",
  "title": "Pre-authentication heap buffer overflow in iperf3",
  "summary": "iperf3 versions 3.20 through 3.21 contain a heap buffer overflow in RSA message decryption used during authentication handling. An unauthenticated remote client may trigger memory corruption by connecting to a vulnerable iperf3 service and supplying an oversized authentication token.",
  "mitigation": "Upgrade iperf3 to version 3.22 or later. Until upgrading, restrict network access to iperf3 services to trusted clients.",
  "vendor": "esnet",
  "product": "iperf3",
  "affected": [
    {
      "affected_notes": [],
      "affected_ranges": [
        "3.20",
        "3.21"
      ],
      "ecosystem": null,
      "fixed_versions": [
        "3.22"
      ],
      "package_name": "iperf3",
      "purl": null
    }
  ],
  "cwes": [
    122
  ],
  "cvss_score": 9.2,
  "cvss_src": "cna_vendor",
  "cvss_vector": "CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N",
  "epss_score": 0.0028,
  "epss_percentile": 0.1929,
  "epss_asof": "2026-10-20",
  "automation": "deterministic",
  "check": false,
  "check_confidence_basis": null,
  "exploit": false,
  "pipeline_minutes": 52.025238783333336,
  "t0_at": "2026-09-30T21:32:14.699000+00:00",
  "signals": {
    "trigger_signal": {
      "at": "2026-09-30T21:32:14.699000+00:00",
      "days": 0,
      "is_lower_bound": false,
      "measured_at": "2026-09-30T21:32:14.699000+00:00",
      "url": "https://www.cve.org/CVERecord?id=CVE-2026-101283"
    }
  }
}