CVE-2026-120596

waiting for further signals

GHSA-mg75-66wv-hfxw ↗EUVD-2026-115333 ↗

no check availablenot proven exploitable

cve.orgpublic pockev

Ethernut / egnite GmbH Nut/Net TCP/IP Stack Nut/OS 5.1

ETK-2026-3301, permanent identifier

cvss7.5cna vendorCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

2h 52msince last run

11mAI analysis

timeline

0 = cve.org publication

trigger signal (cve.org) +0hwaiting for further signals+4h07m

+2h

+6h

+8h

+10h

+12h

description

Nut/Net TCP/IP Stack deployments in Nut/OS versions through 5.1 are affected by an infinite-loop condition in TCP option parsing. An unauthenticated remote attacker can cause TCP-based services to become unresponsive when the device exposes an open TCP port.

mitigation

Restrict untrusted network access to open TCP ports on affected devices and isolate them behind filtering controls. Plan device reboots as a recovery measure if TCP services become unresponsive; no fixed version is recorded in the available advisory data.

check

exploit

automation

–

auth required

EPSS

–

agent run time

11m

cve.org record, t = 0

2026-11-02 17:04Z

Δ to public poc

–

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.

2026-11-02 17:04Z
cve_org: trigger signal, started the run
https://www.cve.org/CVERecord?id=CVE-2026-120596

this entry in the feed

GET /api/v1/feed/CVE-2026-120596

{
  "etk_id": "ETK-2026-3301",
  "cve_id": "CVE-2026-120596",
  "display_id": "CVE-2026-120596",
  "ghsa_id": "GHSA-mg75-66wv-hfxw",
  "euvd_id": "EUVD-2026-115333",
  "status": "published",
  "anchor_state": "anchored",
  "title": "Infinite-loop denial of service in Nut/Net TCP option parsing",
  "summary": "Nut/Net TCP/IP Stack deployments in Nut/OS versions through 5.1 are affected by an infinite-loop condition in TCP option parsing. An unauthenticated remote attacker can cause TCP-based services to become unresponsive when the device exposes an open TCP port.",
  "mitigation": "Restrict untrusted network access to open TCP ports on affected devices and isolate them behind filtering controls. Plan device reboots as a recovery measure if TCP services become unresponsive; no fixed version is recorded in the available advisory data.",
  "vendor": "Ethernut / egnite GmbH",
  "product": "Nut/Net TCP/IP Stack",
  "affected": [
    {
      "affected_notes": [
        "Nut/OS 5.1"
      ],
      "affected_ranges": [],
      "ecosystem": null,
      "fixed_versions": [],
      "package_name": "Nut/Net TCP/IP Stack",
      "purl": null
    }
  ],
  "cwes": null,
  "cvss_score": 7.5,
  "cvss_src": "cna_vendor",
  "cvss_vector": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H",
  "epss_score": null,
  "epss_percentile": null,
  "epss_asof": null,
  "automation": "deterministic",
  "check": false,
  "check_confidence_basis": null,
  "exploit": false,
  "pipeline_minutes": 10.977789083333333,
  "t0_at": "2026-11-02T17:04:18.611000+00:00",
  "signals": {
    "trigger_signal": {
      "at": "2026-11-02T17:04:18.611000+00:00",
      "days": 0,
      "is_lower_bound": false,
      "measured_at": "2026-11-02T17:04:18.611000+00:00",
      "url": "https://www.cve.org/CVERecord?id=CVE-2026-120596"
    }
  }
}

published 2026-11-02 18:12Z
last change 2026-11-02 23:18Z

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