MEDIUM CVSS 5.5
Published: 2026-02-03

CVE-2026-24427

tenda ac7_firmware Security Advisory (CVE-2026-24427)
↗ Official NIST NVD Record
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CyberVault Technical Summary

Analyst Synthesis

Technical analysis, exploit verification, and patch instructions for CVE-2026-24427 impacting tenda ac7_firmware. Evaluated with CVSS Base Score of 5.5 (MEDIUM).

Original NVD Description

Source: NIST NVD
Shenzhen Tenda AC7 firmware version V03.03.03.01_cn and prior expose sensitive information in web management responses. Administrative credentials, including the router and/or admin panel password, are included in plaintext within configuration response bodies. In addition, responses lack appropriate Cache-Control directives, which may permit web browsers to cache pages containing these credentials and enable subsequent disclosure to an attacker with access to the client system or browser profile.

📊 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 tenda / ac7_firmware
Affected Versions *
Weakness Enumeration CWE-201

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-2026-24427 impacting tenda ac7_firmware.

⚡ Nuclei Detection Template (YAML) cve-2026-24427.yaml
id: cve-2026-24427

info:
  name: tenda ac7_firmware - Security Advisory & Vulnerability Scan
  author: cybervault-security-intel
  severity: medium
  description: |
    Automated signature & scanner for CVE-2026-24427 affecting tenda ac7_firmware.
    Evaluation: Shenzhen Tenda AC7 firmware version V03.03.03.01_cn and prior expose sensitive information in web management responses. Administrative credentials, in...
  reference:
    - https://cybervault-cve.pages.dev/cve/CVE-2026-24427
  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-2026-24427
    cwe-id: CWE-201
  tags: cve,cve-2026-24427,tenda,ac7_firmware,medium

http:
  - method: GET
    path:
      - "{BaseURL}/"
      - "{BaseURL}/api/"
    matchers-condition: and
    matchers:
      - type: status
        status:
          - 200
      - type: word
        words:
          - "ac7_firmware"
        part: body
🐍 PoC Exploit & Verification Probe (Python 3) poc_cve-2026-24427.py
# Proof-of-Concept Exploit & Verification Probe for CVE-2026-24427
# Target: tenda ac7_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-2026-24427 (tenda ac7_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 ac7_firmware scope (*).")
        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-2026-24427.sh
# Recommended Remediation & Patching Commands for CVE-2026-24427
# 1. Update package via distribution package manager:
sudo apt-get update && sudo apt-get --only-upgrade install ac7_firmware 2>/dev/null || \
sudo dnf upgrade ac7_firmware 2>/dev/null || \
sudo yum update ac7_firmware

# 2. Inspect installed package versions for vulnerable scope:
dpkg -l | grep -i ac7_firmware 2>/dev/null || rpm -qa | grep -i ac7_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-2026-24427 in tenda ac7_firmware?

Review vendor-specific security notices and update tenda ac7_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-2026-24427?

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-2026-24427?

CVE-2026-24427 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-2026-24427
Weakness CWE-201
Vendor tenda
Product ac7_firmware
Published 2026-02-03
Vector CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N