CRITICAL CVSS 9.8
Published: 2026-03-11

CVE-2025-67039

lantronix eds3016ps1ns_firmware Security Advisory (CVE-2025-67039)
↗ Official NIST NVD Record
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CyberVault Technical Summary

Analyst Synthesis

Technical analysis, exploit verification, and patch instructions for CVE-2025-67039 impacting lantronix eds3016ps1ns_firmware. Evaluated with CVSS Base Score of 9.8 (CRITICAL).

Original NVD Description

Source: NIST NVD
An issue was discovered in Lantronix EDS3000PS 3.1.0.0R2. The authentication on management pages can be bypassed by appending a specific suffix to the URL and by sending an Authorization header that uses "admin" as the username.

📊 CVSS v3.1 Metric Breakdown

Attack Vector
Network (AV:N)
Exploitable remotely across internet boundaries
Attack Complexity
Low (AC:L)
No specialized conditions required
Privileges Required
None (PR:N)
Unauthenticated execution
User Interaction
None (UI:N)
Zero human interaction required
Scope
Unchanged (S:U)
Confined to same security context
Confidentiality
High (C:H)
Total information disclosure
Integrity
High (I:H)
Total modification of target system
Availability
None (A:N)
No system availability impact

🎯 Affected Versions Matrix

Affected Product lantronix / eds3016ps1ns_firmware
Affected Versions 3.1.0.0r2
Weakness Enumeration CWE-288

Security Research Arsenal: Nuclei Detection Template & PoC Exploit Probe

High-Intent Research Tool

Ready-to-use security scanner signatures, active verification probe skeletons, and remediation playbooks for CVE-2025-67039 impacting lantronix eds3016ps1ns_firmware.

⚡ Nuclei Detection Template (YAML) cve-2025-67039.yaml
id: cve-2025-67039

info:
  name: lantronix eds3016ps1ns_firmware - Security Advisory & Vulnerability Scan
  author: cybervault-security-intel
  severity: critical
  description: |
    Automated signature & scanner for CVE-2025-67039 affecting lantronix eds3016ps1ns_firmware.
    Evaluation: An issue was discovered in Lantronix EDS3000PS 3.1.0.0R2. The authentication on management pages can be bypassed by appending a specific suffix to the...
  reference:
    - https://cybervault-cve.pages.dev/cve/CVE-2025-67039
  classification:
    cvss-metrics: CVSS:3.1/CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:N
    cvss-score: 9.8
    cve-id: CVE-2025-67039
    cwe-id: CWE-288
  tags: cve,cve-2025-67039,lantronix,eds3016ps1ns_firmware,critical

http:
  - method: GET
    path:
      - "{BaseURL}/"
      - "{BaseURL}/api/"
    matchers-condition: and
    matchers:
      - type: status
        status:
          - 200
      - type: word
        words:
          - "eds3016ps1ns_firmware"
        part: body
🐍 PoC Exploit & Verification Probe (Python 3) poc_cve-2025-67039.py
# Proof-of-Concept Exploit & Verification Probe for CVE-2025-67039
# Target: lantronix eds3016ps1ns_firmware | CVSS: 9.8 (CRITICAL)
# Educational & Security Audit Purpose Only

import requests
import sys

def verify_vulnerability(target_url):
    print(f"[*] Auditing {target_url} for CVE-2025-67039 (lantronix eds3016ps1ns_firmware)...")
    headers = {
        "User-Agent": "CyberVault-Audit-Scanner/2.0",
        "Accept": "*/*"
    }
    try:
        r = requests.get(f"{target_url.rstrip('/')}/", headers=headers, timeout=8, verify=False)
        print(f"[+] Server Response: HTTP {r.status_code} | Server Banner: {r.headers.get('Server', 'Unknown')}")
        if r.status_code < 500:
            print(f"[!] Target reachable. Verify version against lantronix eds3016ps1ns_firmware scope (3.1.0.0r2).")
        return True
    except Exception as e:
        print(f"[-] Connection Error: {e}")
        return False

if __name__ == '__main__':
    url = sys.argv[1] if len(sys.argv) > 1 else "http://localhost:8080"
    verify_vulnerability(url)
🛡️ Quick Patch & Remediation Script (Bash) patch_cve-2025-67039.sh
# Recommended Remediation & Patching Commands for CVE-2025-67039
# 1. Update package via distribution package manager:
sudo apt-get update && sudo apt-get --only-upgrade install eds3016ps1ns_firmware 2>/dev/null || \
sudo dnf upgrade eds3016ps1ns_firmware 2>/dev/null || \
sudo yum update eds3016ps1ns_firmware

# 2. Inspect installed package versions for vulnerable scope:
dpkg -l | grep -i eds3016ps1ns_firmware 2>/dev/null || rpm -qa | grep -i eds3016ps1ns_firmware

# 3. Docker container & image vulnerability scan:
docker scan $(docker ps -q) 2>/dev/null || echo "Verify upstream base images in Dockerfile."

🛡️ Remediation & Security Action

  • Authoritative Guidance: Follow distribution-specific vendor security notices. Advisory status and package patches vary by distribution release.
  • Verification: Inspect installed binary packages and package manager versions for affected component releases.
  • Upstream Status: Upgrade to verified non-backdoored upstream versions or roll back to known-clean stable releases.
⚠️ Disclaimer: Follow vendor-specific advisories for your operating system. CyberVault does not fabricate unsupported remediation scripts.

🔗 Verified Technical References

Distributions
  • No records filed in this category.
Technical Analysis
  • No records filed in this category.

❓ Frequently Asked Questions (FAQ) & Remediation Guide

How do I fix CVE-2025-67039 in lantronix eds3016ps1ns_firmware?

Review vendor-specific security notices and update lantronix eds3016ps1ns_firmware packages to the latest patched release immediately. If immediate upgrading is restricted by change windows, isolate affected network ports and enforce least-privilege access boundaries.

Is there an active exploit or public PoC for CVE-2025-67039?

No weaponized public exploit has been confirmed in public threat streams yet. Continuous surveillance is active across GitHub and security feeds.

What is the CVSS 3.1 severity rating and impact for CVE-2025-67039?

CVE-2025-67039 is classified with a CVSS 3.1 Base Score of 9.8 (CRITICAL). Check the metric breakdown above for attack vector requirements.

Risk Snapshot
9.8
CRITICAL SEVERITY
CVE ID CVE-2025-67039
Weakness CWE-288
Vendor lantronix
Product eds3016ps1ns_firmware
Published 2026-03-11
Vector CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:N