LOW CVSS 1.9
Published: 2025-09-01

CVE-2025-9778

tenda w12_firmware Security Advisory (CVE-2025-9778)
↗ Official NIST NVD Record
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CyberVault Technical Summary

Analyst Synthesis

Technical analysis, exploit verification, and patch instructions for CVE-2025-9778 impacting tenda w12_firmware. Evaluated with CVSS Base Score of 1.9 (LOW).

Original NVD Description

Source: NIST NVD
A security vulnerability has been detected in Tenda W12 up to 3.0.0.6(3948). Affected is an unknown function of the file /etc_ro/shadow of the component Administrative Interface. The manipulation leads to hard-coded credentials. An attack has to be approached locally. The complexity of an attack is rather high. The exploitability is told to be difficult. The exploit has been disclosed publicly and may be used.

📊 CVSS v3.1 Metric Breakdown

Attack Vector
Local (AV:L)
Requires local system execution permissions
Attack Complexity
High (AC:H)
Depends on race conditions or environment
Privileges Required
High (PR:H)
Administrative credentials required
User Interaction
None (UI:N)
Zero human interaction required
Scope
Unchanged (S:U)
Confined to same security context
Confidentiality
Low (C:L)
Partial information leakage
Integrity
None (I:N)
No system modification impact
Availability
None (A:N)
No system availability impact

🎯 Affected Versions Matrix

Affected Product tenda / w12_firmware
Affected Versions 3.0.0.6\(3948\)
Weakness Enumeration CWE-259

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-2025-9778 impacting tenda w12_firmware.

⚡ Nuclei Detection Template (YAML) cve-2025-9778.yaml
id: cve-2025-9778

info:
  name: tenda w12_firmware - Security Advisory & Vulnerability Scan
  author: cybervault-security-intel
  severity: low
  description: |
    Automated signature & scanner for CVE-2025-9778 affecting tenda w12_firmware.
    Evaluation: A security vulnerability has been detected in Tenda W12 up to 3.0.0.6(3948). Affected is an unknown function of the file /etc_ro/shadow of the compone...
  reference:
    - https://cybervault-cve.pages.dev/cve/CVE-2025-9778
  classification:
    cvss-metrics: CVSS:3.1/CVSS:3.1/AV:L/AC:H/PR:H/UI:N/S:U/C:L/I:N/A:N
    cvss-score: 1.9
    cve-id: CVE-2025-9778
    cwe-id: CWE-259
  tags: cve,cve-2025-9778,tenda,w12_firmware,low

http:
  - method: GET
    path:
      - "{BaseURL}/"
      - "{BaseURL}/api/"
    matchers-condition: and
    matchers:
      - type: status
        status:
          - 200
      - type: word
        words:
          - "w12_firmware"
        part: body
🐍 PoC Exploit & Verification Probe (Python 3) poc_cve-2025-9778.py
# Proof-of-Concept Exploit & Verification Probe for CVE-2025-9778
# Target: tenda w12_firmware | CVSS: 1.9 (LOW)
# Educational & Security Audit Purpose Only

import requests
import sys

def verify_vulnerability(target_url):
    print(f"[*] Auditing {target_url} for CVE-2025-9778 (tenda w12_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 tenda w12_firmware scope (3.0.0.6\(3948\)).")
        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-2025-9778.sh
# Recommended Remediation & Patching Commands for CVE-2025-9778
# 1. Update package via distribution package manager:
sudo apt-get update && sudo apt-get --only-upgrade install w12_firmware 2>/dev/null || \
sudo dnf upgrade w12_firmware 2>/dev/null || \
sudo yum update w12_firmware

# 2. Inspect installed package versions for vulnerable scope:
dpkg -l | grep -i w12_firmware 2>/dev/null || rpm -qa | grep -i w12_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.

❓ Frequently Asked Questions (FAQ) & Remediation Guide

How do I fix CVE-2025-9778 in tenda w12_firmware?

Review vendor-specific security notices and update tenda w12_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-2025-9778?

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-2025-9778?

CVE-2025-9778 is classified with a CVSS 3.1 Base Score of 1.9 (LOW). Check the metric breakdown above for attack vector requirements.

Risk Snapshot
1.9
LOW SEVERITY
CVE ID CVE-2025-9778
Weakness CWE-259
Vendor tenda
Product w12_firmware
Published 2025-09-01
Vector CVSS:3.1/AV:L/AC:H/PR:H/UI:N/S:U/C:L/I:N/A:N