CVE-2026-101276

{
  "etk_id": "ETK-2026-162",
  "cve_id": "CVE-2026-101276",
  "display_id": "CVE-2026-101276",
  "ghsa_id": "GHSA-pmgg-x2vj-36cv",
  "euvd_id": "EUVD-2026-90387",
  "status": "published",
  "anchor_state": "anchored",
  "title": "Remote use-after-free in iperf3 server",
  "summary": "iperf3 3.21 has a heap use-after-free in its server-side test handling. An unauthenticated remote client can trigger the flaw when it can connect to an affected iperf3 server.",
  "mitigation": "Upgrade iperf3 to version 3.22 or later. Until upgraded, restrict network access to iperf3 server instances to trusted clients.",
  "vendor": "esnet",
  "product": "iperf3",
  "affected": [
    {
      "affected_notes": [],
      "affected_ranges": [
        "3.21"
      ],
      "ecosystem": null,
      "fixed_versions": [
        "3.22"
      ],
      "package_name": "iperf3",
      "purl": null
    }
  ],
  "cwes": null,
  "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/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X",
  "epss_score": 0.004,
  "epss_percentile": 0.3232,
  "epss_asof": "2026-10-20",
  "automation": "contextual",
  "check": false,
  "check_confidence_basis": null,
  "exploit": false,
  "pipeline_minutes": 49.936289116666664,
  "t0_at": "2026-09-30T21:11:52.046000+00:00",
  "signals": {
    "trigger_signal": {
      "at": "2026-09-30T21:11:52.046000+00:00",
      "days": 0,
      "is_lower_bound": false,
      "measured_at": "2026-09-30T21:11:52.046000+00:00",
      "url": "https://github.com/advisories/GHSA-pmgg-x2vj-36cv"
    }
  }
}