CVE-2026-39453

waiting for further signalsZero needs more public information before it can validate it.

GHSA-jp3p-vmv4-q5ff ↗EUVD-2026-95814 ↗

no check availablenot proven exploitable
cve.orgpublic pocExploit code has been published by someone. Source signals can also carry a PoC (Proof of Concept).kevAttacks confirmed in the real world.
Red Lion Controls 700 Series >= 0, < Firmware Versions 3.11.0; >= 0, < Bootloader Versions 2.0.6.1
fixed in Firmware Versions 3.11.0, Bootloader Versions 2.0.6.1
CWE-617 Reachable Assertion
ETK-2026-1128Zero's internal tracking ID, independent of the CVE number., permanent identifier
9d 23h 36msince last run
23mAI analysisAnalysis: how long the AI spent reversing this signal.
timeline
0 = trigger signal
trigger signal (cve.org) +0hwaiting for further signals+38h30m
0
+2h
+4h
+6h
+8h
+10h

description

Red Lion Controls 700 Series switches have a web interface flaw that can cause a device restart. An attacker who can access the switch web server could repeat the triggering request to disrupt switch availability.

mitigation

Upgrade Series to Firmware Versions 3.11.0, Bootloader Versions 2.0.6.1 or later.

fixed in Firmware Versions 3.11.0, Bootloader Versions 2.0.6.1

check
no
exploit
no
automationDeterministic: a check that runs on its own, the same request on every target. Contextual: an agentic technique that needs to be applied per target, for bugs that depend on contextual flows.
contextual
auth requiredWhether an attacker needs an account first, based on the CVSS vector's Privileges Required.
yes, low privileges
EPSSEstimate of the chance this CVE is exploited in the next 30 days. Refreshed daily.
0.29%20th percentile
agent run time
23m
cve.org record, t = 0The moment cve.org publishes the CVE in full.
2026-10-09 14:42Z
Δ to public pocExploit code has been published by someone. Source signals can also carry a PoC (Proof of Concept).
–
Δ to kevAttacks confirmed in the real world.
–

outcome

Contextual: an exploit technique exists, but no deterministic check could cover this one.

source signals

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

  1. 2026-10-09 14:42Z
    cve_org: trigger signal, started the run

this entry in the feed

GET /api/v1/feed/CVE-2026-39453

{
  "etk_id": "ETK-2026-1128",
  "cve_id": "CVE-2026-39453",
  "display_id": "CVE-2026-39453",
  "ghsa_id": "GHSA-jp3p-vmv4-q5ff",
  "euvd_id": "EUVD-2026-95814",
  "status": "published",
  "anchor_state": "anchored",
  "title": "Web interface denial of service in Red Lion 700 Series",
  "summary": "Red Lion Controls 700 Series switches have a web interface flaw that can cause a device restart. An attacker who can access the switch web server could repeat the triggering request to disrupt switch availability.",
  "mitigation": "Upgrade Series to Firmware Versions 3.11.0, Bootloader Versions 2.0.6.1 or later.",
  "vendor": "Red Lion Controls",
  "product": "700 Series",
  "affected": [
    {
      "affected_notes": [
        ">= 0, < Firmware Versions 3.11.0",
        ">= 0, < Bootloader Versions 2.0.6.1"
      ],
      "affected_ranges": [],
      "ecosystem": null,
      "fixed_versions": [
        "Firmware Versions 3.11.0",
        "Bootloader Versions 2.0.6.1"
      ],
      "package_name": "700 Series",
      "purl": null
    }
  ],
  "cwes": [
    617
  ],
  "cvss_score": 8.5,
  "cvss_src": "cna_vendor",
  "cvss_vector": "CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:L/VI:H/VA:H/SC:L/SI:H/SA:H",
  "epss_score": 0.0029,
  "epss_percentile": 0.2023,
  "epss_asof": "2026-10-20",
  "automation": "contextual",
  "check": false,
  "check_confidence_basis": null,
  "exploit": false,
  "pipeline_minutes": 22.8436823,
  "t0_at": "2026-10-09T14:42:18.998000+00:00",
  "signals": {
    "trigger_signal": {
      "at": "2026-10-09T14:42:18.998000+00:00",
      "days": 0,
      "is_lower_bound": false,
      "measured_at": "2026-10-09T14:42:18.998000+00:00",
      "url": "https://www.cve.org/CVERecord?id=CVE-2026-39453"
    }
  }
}

published 2026-10-10 03:25Z
last change 2026-10-21 04:45Z

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