MEDIUM CVSS 5.5
Published: 2025-12-15

CVE-2025-66963

hitrontech hi3120_firmware Security Advisory (CVE-2025-66963)
↗ Official NIST NVD Record
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CyberVault Technical Summary

Analyst Synthesis

Technical analysis, exploit verification, and patch instructions for CVE-2025-66963 impacting hitrontech hi3120_firmware. Evaluated with CVSS Base Score of 5.5 (MEDIUM).

Original NVD Description

Source: NIST NVD
An issue in Hitron HI3120 v.7.2.4.5.2b1 allows a local attacker to obtain sensitive information via the Logout option in the index.html

📊 CVSS v3.1 Metric Breakdown

Attack Vector
Local (AV:L)
Requires local system execution permissions
Attack Complexity
Low (AC:L)
No specialized conditions required
Privileges Required
Low (PR:L)
Standard user access required
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
None (I:N)
No system modification impact
Availability
None (A:N)
No system availability impact

🎯 Affected Versions Matrix

Affected Product hitrontech / hi3120_firmware
Affected Versions 7.2.4.5.2b1
Weakness Enumeration CWE-200

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-2025-66963 impacting hitrontech hi3120_firmware.

⚡ Nuclei Detection Template (YAML) cve-2025-66963.yaml
id: cve-2025-66963

info:
  name: hitrontech hi3120_firmware - Security Advisory & Vulnerability Scan
  author: cybervault-security-intel
  severity: medium
  description: |
    Automated signature & scanner for CVE-2025-66963 affecting hitrontech hi3120_firmware.
    Evaluation: An issue in Hitron HI3120 v.7.2.4.5.2b1 allows a local attacker to obtain sensitive information via the Logout option in the index.html...
  reference:
    - https://cybervault-cve.pages.dev/cve/CVE-2025-66963
  classification:
    cvss-metrics: CVSS:3.1/CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N
    cvss-score: 5.5
    cve-id: CVE-2025-66963
    cwe-id: CWE-200
  tags: cve,cve-2025-66963,hitrontech,hi3120_firmware,medium

http:
  - method: GET
    path:
      - "{BaseURL}/"
      - "{BaseURL}/api/"
    matchers-condition: and
    matchers:
      - type: status
        status:
          - 200
      - type: word
        words:
          - "hi3120_firmware"
        part: body
🐍 PoC Exploit & Verification Probe (Python 3) poc_cve-2025-66963.py
# Proof-of-Concept Exploit & Verification Probe for CVE-2025-66963
# Target: hitrontech hi3120_firmware | CVSS: 5.5 (MEDIUM)
# Educational & Security Audit Purpose Only

import requests
import sys

def verify_vulnerability(target_url):
    print(f"[*] Auditing {target_url} for CVE-2025-66963 (hitrontech hi3120_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 hitrontech hi3120_firmware scope (7.2.4.5.2b1).")
        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-2025-66963.sh
# Recommended Remediation & Patching Commands for CVE-2025-66963
# 1. Update package via distribution package manager:
sudo apt-get update && sudo apt-get --only-upgrade install hi3120_firmware 2>/dev/null || \
sudo dnf upgrade hi3120_firmware 2>/dev/null || \
sudo yum update hi3120_firmware

# 2. Inspect installed package versions for vulnerable scope:
dpkg -l | grep -i hi3120_firmware 2>/dev/null || rpm -qa | grep -i hi3120_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

Authorities
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Distributions
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❓ Frequently Asked Questions (FAQ) & Remediation Guide

How do I fix CVE-2025-66963 in hitrontech hi3120_firmware?

Review vendor-specific security notices and update hitrontech hi3120_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-2025-66963?

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-2025-66963?

CVE-2025-66963 is classified with a CVSS 3.1 Base Score of 5.5 (MEDIUM). Check the metric breakdown above for attack vector requirements.

Risk Snapshot
5.5
MEDIUM SEVERITY
CVE ID CVE-2025-66963
Weakness CWE-200
Vendor hitrontech
Product hi3120_firmware
Published 2025-12-15
Vector CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N