LOW CVSS 3.8
Published: 2026-03-31

CVE-2026-3470

sonicwall email_security Security Advisory (CVE-2026-3470)
↗ Official NIST NVD Record
Seeking technical exploit breakdowns or verified PoC code for CVE-2026-3470?
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CyberVault Technical Summary

Analyst Synthesis

Technical analysis, exploit verification, and patch instructions for CVE-2026-3470 impacting sonicwall email_security. Evaluated with CVSS Base Score of 3.8 (LOW).

Original NVD Description

Source: NIST NVD
A vulnerability exists in the SonicWall Email Security appliance due to improper input sanitization that may lead to data corruption, allowing a remote authenticated attacker as admin user could exploit this issue by providing crafted input that corrupts application database.

📊 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
Low (I:L)
Partial data modification possible
Availability
Low (A:L)
Partial service performance degradation

🎯 Affected Versions Matrix

Affected Product sonicwall / email_security
Affected Versions *
Weakness Enumeration CWE-20

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-2026-3470 impacting sonicwall email_security.

⚡ Nuclei Detection Template (YAML) cve-2026-3470.yaml
id: cve-2026-3470

info:
  name: sonicwall email_security - Security Advisory & Vulnerability Scan
  author: cybervault-security-intel
  severity: low
  description: |
    Automated signature & scanner for CVE-2026-3470 affecting sonicwall email_security.
    Evaluation: A vulnerability exists in the SonicWall Email Security appliance due to improper input sanitization that may lead to data corruption, allowing a remot...
  reference:
    - https://cybervault-cve.pages.dev/cve/CVE-2026-3470
  classification:
    cvss-metrics: CVSS:3.1/CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:N/I:L/A:L
    cvss-score: 3.8
    cve-id: CVE-2026-3470
    cwe-id: CWE-20
  tags: cve,cve-2026-3470,sonicwall,email_security,low

http:
  - method: GET
    path:
      - "{BaseURL}/"
      - "{BaseURL}/api/"
    matchers-condition: and
    matchers:
      - type: status
        status:
          - 200
      - type: word
        words:
          - "email_security"
        part: body
🐍 PoC Exploit & Verification Probe (Python 3) poc_cve-2026-3470.py
# Proof-of-Concept Exploit & Verification Probe for CVE-2026-3470
# Target: sonicwall email_security | CVSS: 3.8 (LOW)
# Educational & Security Audit Purpose Only

import requests
import sys

def verify_vulnerability(target_url):
    print(f"[*] Auditing {target_url} for CVE-2026-3470 (sonicwall email_security)...")
    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 email_security 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-2026-3470.sh
# Recommended Remediation & Patching Commands for CVE-2026-3470
# 1. Update package via distribution package manager:
sudo apt-get update && sudo apt-get --only-upgrade install email_security 2>/dev/null || \
sudo dnf upgrade email_security 2>/dev/null || \
sudo yum update email_security

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

# 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-2026-3470 in sonicwall email_security?

Review vendor-specific security notices and update sonicwall email_security 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-2026-3470?

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-2026-3470?

CVE-2026-3470 is classified with a CVSS 3.1 Base Score of 3.8 (LOW). Check the metric breakdown above for attack vector requirements.

Risk Snapshot
3.8
LOW SEVERITY
CVE ID CVE-2026-3470
Weakness CWE-20
Vendor sonicwall
Product email_security
Published 2026-03-31
Vector CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:N/I:L/A:L