MEDIUM CVSS 4.3
Published: 2026-01-09

CVE-2025-66315

zte mf258k_pro_firmware Security Advisory (CVE-2025-66315)
↗ Official NIST NVD Record
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CyberVault Technical Summary

Analyst Synthesis

Technical analysis, exploit verification, and patch instructions for CVE-2025-66315 impacting zte mf258k_pro_firmware. Evaluated with CVSS Base Score of 4.3 (MEDIUM).

Original NVD Description

Source: NIST NVD
There is a configuration defect vulnerability in the version server of ZTE MF258K Pro products. Due to improper directory permission settings, an attacker can execute write permissions in a specific directory.

📊 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
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
None (C:N)
No data confidentiality impact
Integrity
None (I:N)
No system modification impact
Availability
Low (A:L)
Partial service performance degradation

🎯 Affected Versions Matrix

Affected Product zte / mf258k_pro_firmware
Affected Versions zte_mf258kpro_play_v1.0.0b03
Weakness Enumeration CWE-269

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-2025-66315 impacting zte mf258k_pro_firmware.

⚡ Nuclei Detection Template (YAML) cve-2025-66315.yaml
id: cve-2025-66315

info:
  name: zte mf258k_pro_firmware - Security Advisory & Vulnerability Scan
  author: cybervault-security-intel
  severity: medium
  description: |
    Automated signature & scanner for CVE-2025-66315 affecting zte mf258k_pro_firmware.
    Evaluation: There is a configuration defect vulnerability in the version server of ZTE MF258K Pro products. Due to improper directory permission settings, an atta...
  reference:
    - https://cybervault-cve.pages.dev/cve/CVE-2025-66315
  classification:
    cvss-metrics: CVSS:3.1/CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:L
    cvss-score: 4.3
    cve-id: CVE-2025-66315
    cwe-id: CWE-269
  tags: cve,cve-2025-66315,zte,mf258k_pro_firmware,medium

http:
  - method: GET
    path:
      - "{BaseURL}/"
      - "{BaseURL}/api/"
    matchers-condition: and
    matchers:
      - type: status
        status:
          - 200
      - type: word
        words:
          - "mf258k_pro_firmware"
        part: body
🐍 PoC Exploit & Verification Probe (Python 3) poc_cve-2025-66315.py
# Proof-of-Concept Exploit & Verification Probe for CVE-2025-66315
# Target: zte mf258k_pro_firmware | CVSS: 4.3 (MEDIUM)
# Educational & Security Audit Purpose Only

import requests
import sys

def verify_vulnerability(target_url):
    print(f"[*] Auditing {target_url} for CVE-2025-66315 (zte mf258k_pro_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 zte mf258k_pro_firmware scope (zte_mf258kpro_play_v1.0.0b03).")
        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-2025-66315.sh
# Recommended Remediation & Patching Commands for CVE-2025-66315
# 1. Update package via distribution package manager:
sudo apt-get update && sudo apt-get --only-upgrade install mf258k_pro_firmware 2>/dev/null || \
sudo dnf upgrade mf258k_pro_firmware 2>/dev/null || \
sudo yum update mf258k_pro_firmware

# 2. Inspect installed package versions for vulnerable scope:
dpkg -l | grep -i mf258k_pro_firmware 2>/dev/null || rpm -qa | grep -i mf258k_pro_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
  • No records filed in this category.
Distributions
  • No records filed in this category.

❓ Frequently Asked Questions (FAQ) & Remediation Guide

How do I fix CVE-2025-66315 in zte mf258k_pro_firmware?

Review vendor-specific security notices and update zte mf258k_pro_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-2025-66315?

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-2025-66315?

CVE-2025-66315 is classified with a CVSS 3.1 Base Score of 4.3 (MEDIUM). Check the metric breakdown above for attack vector requirements.

Risk Snapshot
4.3
MEDIUM SEVERITY
CVE ID CVE-2025-66315
Weakness CWE-269
Vendor zte
Product mf258k_pro_firmware
Published 2026-01-09
Vector CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:L