MEDIUM CVSS 4.9
Published: 2026-02-11

CVE-2025-58466

qnap qts Security Advisory (CVE-2025-58466)
↗ Official NIST NVD Record
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CyberVault Technical Summary

Analyst Synthesis

Technical analysis, exploit verification, and patch instructions for CVE-2025-58466 impacting qnap qts. Evaluated with CVSS Base Score of 4.9 (MEDIUM).

Original NVD Description

Source: NIST NVD
A use of uninitialized variable vulnerability has been reported to affect several QNAP operating system versions. If a remote attacker gains an administrator account, they can then exploit the vulnerability to denial of service conditions, or modify control flow in unexpected ways. We have already fixed the vulnerability in the following versions: QTS 5.2.8.3332 build 20251128 and later QuTS hero h5.2.8.3321 build 20251117 and later

📊 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
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
None (C:N)
No data confidentiality impact
Integrity
None (I:N)
No system modification impact
Availability
High (A:H)
Total denial of service or shutdown

🎯 Affected Versions Matrix

Affected Product qnap / qts
Affected Versions 5.2.0.2737
Weakness Enumeration CWE-457

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-2025-58466 impacting qnap qts.

⚡ Nuclei Detection Template (YAML) cve-2025-58466.yaml
id: cve-2025-58466

info:
  name: qnap qts - Security Advisory & Vulnerability Scan
  author: cybervault-security-intel
  severity: medium
  description: |
    Automated signature & scanner for CVE-2025-58466 affecting qnap qts.
    Evaluation: A use of uninitialized variable vulnerability has been reported to affect several QNAP operating system versions. If a remote attacker gains an admini...
  reference:
    - https://cybervault-cve.pages.dev/cve/CVE-2025-58466
  classification:
    cvss-metrics: CVSS:3.1/CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:N/I:N/A:H
    cvss-score: 4.9
    cve-id: CVE-2025-58466
    cwe-id: CWE-457
  tags: cve,cve-2025-58466,qnap,qts,medium

http:
  - method: GET
    path:
      - "{BaseURL}/"
      - "{BaseURL}/api/"
    matchers-condition: and
    matchers:
      - type: status
        status:
          - 200
      - type: word
        words:
          - "qts"
        part: body
🐍 PoC Exploit & Verification Probe (Python 3) poc_cve-2025-58466.py
# Proof-of-Concept Exploit & Verification Probe for CVE-2025-58466
# Target: qnap qts | CVSS: 4.9 (MEDIUM)
# Educational & Security Audit Purpose Only

import requests
import sys

def verify_vulnerability(target_url):
    print(f"[*] Auditing {target_url} for CVE-2025-58466 (qnap qts)...")
    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 qnap qts scope (5.2.0.2737).")
        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-2025-58466.sh
# Recommended Remediation & Patching Commands for CVE-2025-58466
# 1. Update package via distribution package manager:
sudo apt-get update && sudo apt-get --only-upgrade install qts 2>/dev/null || \
sudo dnf upgrade qts 2>/dev/null || \
sudo yum update qts

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

# 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-2025-58466 in qnap qts?

Review vendor-specific security notices and update qnap qts 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-2025-58466?

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-2025-58466?

CVE-2025-58466 is classified with a CVSS 3.1 Base Score of 4.9 (MEDIUM). Check the metric breakdown above for attack vector requirements.

Risk Snapshot
4.9
MEDIUM SEVERITY
CVE ID CVE-2025-58466
Weakness CWE-457
Vendor qnap
Product qts
Published 2026-02-11
Vector CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:N/I:N/A:H