CVE-2026-102253

waiting for further signals

GHSA-jhpr-vprv-wh8f ↗EUVD-2026-89415 ↗

no check availablenot proven exploitable

cve.orgpublic poc+7.9dkev

esnet iperf3 >= 3.14, < 3.22

fixed in 3.22

CWE-835 Loop with Unreachable Exit Condition ('Infinite Loop')

ETK-2026-15, permanent identifier

cvss8.7cna vendorCVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N

12d 03h 37msince last run

20mAI analysis

timeline

0 = cve.org publication

trigger signal (cve.org) +0dpublic poc+7.9dwaiting for further signals+9.2d

+2d

+4d

+6d

description

iperf3 versions earlier than 3.22 are affected by a denial-of-service flaw in the server UDP receive path. An unauthenticated remote attacker can cause the affected worker to loop indefinitely and consume CPU, making the server unavailable. Exposure requires an accessible affected iperf3 server handling UDP traffic.

mitigation

Upgrade iperf3 to version 3.22 or later. Until upgraded, restrict access to iperf3 server control and UDP service ports to trusted networks.

fixed in 3.22

check

exploit

automation

–

auth required

EPSS

0.43%35th percentile

agent run time

20m

cve.org record, t = 0

2026-09-29 20:11Z

Δ to public poc

+7.9d

Δ to kev

–

outcome

No artifact: an exploit or check was attempted but could not be produced at this moment.

source signals

Public signals that triggered or updated the pipeline. These are inputs for the deltas above.

2026-09-29 20:11Z
cve_org: trigger signal, started the run
https://www.cve.org/CVERecord?id=CVE-2026-102253
2026-10-09 00:56Z
Ravi-lk/CVE-2026-102253-POC
github · https://github.com/Ravi-lk/CVE-2026-102253-POC

this entry in the feed

GET /api/v1/feed/CVE-2026-102253

{
  "etk_id": "ETK-2026-15",
  "cve_id": "CVE-2026-102253",
  "display_id": "CVE-2026-102253",
  "ghsa_id": "GHSA-jhpr-vprv-wh8f",
  "euvd_id": "EUVD-2026-89415",
  "status": "published",
  "anchor_state": "anchored",
  "title": "Unauthenticated UDP denial of service in iperf3",
  "summary": "iperf3 versions earlier than 3.22 are affected by a denial-of-service flaw in the server UDP receive path. An unauthenticated remote attacker can cause the affected worker to loop indefinitely and consume CPU, making the server unavailable. Exposure requires an accessible affected iperf3 server handling UDP traffic.",
  "mitigation": "Upgrade iperf3 to version 3.22 or later. Until upgraded, restrict access to iperf3 server control and UDP service ports to trusted networks.",
  "vendor": "esnet",
  "product": "iperf3",
  "affected": [
    {
      "affected_notes": [],
      "affected_ranges": [
        ">= 3.14, < 3.22"
      ],
      "ecosystem": null,
      "fixed_versions": [
        "3.22"
      ],
      "package_name": "iperf3",
      "purl": null
    }
  ],
  "cwes": [
    835
  ],
  "cvss_score": 8.7,
  "cvss_src": "cna_vendor",
  "cvss_vector": "CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N",
  "epss_score": 0.0043,
  "epss_percentile": 0.3596,
  "epss_asof": "2026-10-20",
  "automation": "deterministic",
  "check": false,
  "check_confidence_basis": null,
  "exploit": false,
  "pipeline_minutes": 20.154161116666668,
  "t0_at": "2026-09-29T20:11:47.089000+00:00",
  "signals": {
    "public_poc": {
      "at": "2026-10-07T18:08:16+00:00",
      "days": 7.914223506944444,
      "is_lower_bound": false,
      "measured_at": "2026-09-29T20:11:47.089000+00:00",
      "url": "https://github.com/Ravi-lk/CVE-2026-102253-POC"
    },
    "trigger_signal": {
      "at": "2026-09-29T20:11:47.089000+00:00",
      "days": 0,
      "is_lower_bound": false,
      "measured_at": "2026-09-29T20:11:47.089000+00:00",
      "url": "https://www.cve.org/CVERecord?id=CVE-2026-102253"
    }
  }
}

published 2026-09-29 20:55Z
last change 2026-10-21 05:00Z

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