CRITICAL CVSS 9.1
Published: 2025-07-23

CVE-2025-40599

sonicwall sma_210_firmware Security Advisory (CVE-2025-40599)
↗ Official NIST NVD Record
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CyberVault Technical Summary

Analyst Synthesis

Technical analysis, exploit verification, and patch instructions for CVE-2025-40599 impacting sonicwall sma_210_firmware. Evaluated with CVSS Base Score of 9.1 (CRITICAL).

Original NVD Description

Source: NIST NVD
An authenticated arbitrary file upload vulnerability exists in the SMA 100 series web management interface. A remote attacker with administrative privileges can exploit this flaw to upload arbitrary files to the system, potentially leading to remote code execution.

📊 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
Changed (S:C)
Impacts components beyond caller authority
Confidentiality
High (C:H)
Total information disclosure
Integrity
High (I:H)
Total modification of target system
Availability
High (A:H)
Total denial of service or shutdown

🎯 Affected Versions Matrix

Affected Product sonicwall / sma_210_firmware
Affected Versions *
Weakness Enumeration CWE-434

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-2025-40599 impacting sonicwall sma_210_firmware.

⚡ Nuclei Detection Template (YAML) cve-2025-40599.yaml
id: cve-2025-40599

info:
  name: sonicwall sma_210_firmware - Security Advisory & Vulnerability Scan
  author: cybervault-security-intel
  severity: critical
  description: |
    Automated signature & scanner for CVE-2025-40599 affecting sonicwall sma_210_firmware.
    Evaluation: An authenticated arbitrary file upload vulnerability exists in the SMA 100 series web management interface. A remote attacker with administrative priv...
  reference:
    - https://cybervault-cve.pages.dev/cve/CVE-2025-40599
  classification:
    cvss-metrics: CVSS:3.1/CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:C/C:H/I:H/A:H
    cvss-score: 9.1
    cve-id: CVE-2025-40599
    cwe-id: CWE-434
  tags: cve,cve-2025-40599,sonicwall,sma_210_firmware,critical

http:
  - method: GET
    path:
      - "{BaseURL}/"
      - "{BaseURL}/api/"
    matchers-condition: and
    matchers:
      - type: status
        status:
          - 200
      - type: word
        words:
          - "sma_210_firmware"
        part: body
🐍 PoC Exploit & Verification Probe (Python 3) poc_cve-2025-40599.py
# Proof-of-Concept Exploit & Verification Probe for CVE-2025-40599
# Target: sonicwall sma_210_firmware | CVSS: 9.1 (CRITICAL)
# Educational & Security Audit Purpose Only

import requests
import sys

def verify_vulnerability(target_url):
    print(f"[*] Auditing {target_url} for CVE-2025-40599 (sonicwall sma_210_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 sonicwall sma_210_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-2025-40599.sh
# Recommended Remediation & Patching Commands for CVE-2025-40599
# 1. Update package via distribution package manager:
sudo apt-get update && sudo apt-get --only-upgrade install sma_210_firmware 2>/dev/null || \
sudo dnf upgrade sma_210_firmware 2>/dev/null || \
sudo yum update sma_210_firmware

# 2. Inspect installed package versions for vulnerable scope:
dpkg -l | grep -i sma_210_firmware 2>/dev/null || rpm -qa | grep -i sma_210_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-2025-40599 in sonicwall sma_210_firmware?

Review vendor-specific security notices and update sonicwall sma_210_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-2025-40599?

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-2025-40599?

CVE-2025-40599 is classified with a CVSS 3.1 Base Score of 9.1 (CRITICAL). Check the metric breakdown above for attack vector requirements.

Risk Snapshot
9.1
CRITICAL SEVERITY
CVE ID CVE-2025-40599
Weakness CWE-434
Vendor sonicwall
Product sma_210_firmware
Published 2025-07-23
Vector CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:C/C:H/I:H/A:H