MEDIUM CVSS 4.7
Published: 2026-05-11

CVE-2026-8272

dlink dns-320_firmware Security Advisory (CVE-2026-8272)
↗ Official NIST NVD Record
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CyberVault Technical Summary

Analyst Synthesis

Technical analysis, exploit verification, and patch instructions for CVE-2026-8272 impacting dlink dns-320_firmware. Evaluated with CVSS Base Score of 4.7 (MEDIUM).

Original NVD Description

Source: NIST NVD
A security flaw has been discovered in D-Link DNS-320 2.06B01. This affects the function delete/rename/copy/move/chmod/chown of the file /cgi-bin/webfile_mgr.cgi. The manipulation results in os command injection. The attack may be performed from remote. The exploit has been released to the public and may be used for attacks.

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

🎯 Affected Versions Matrix

Affected Product dlink / dns-320_firmware
Affected Versions 2.06b01
Weakness Enumeration CWE-77

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-2026-8272 impacting dlink dns-320_firmware.

⚡ Nuclei Detection Template (YAML) cve-2026-8272.yaml
id: cve-2026-8272

info:
  name: dlink dns-320_firmware - Security Advisory & Vulnerability Scan
  author: cybervault-security-intel
  severity: medium
  description: |
    Automated signature & scanner for CVE-2026-8272 affecting dlink dns-320_firmware.
    Evaluation: A security flaw has been discovered in D-Link DNS-320 2.06B01. This affects the function delete/rename/copy/move/chmod/chown of the file /cgi-bin/webf...
  reference:
    - https://cybervault-cve.pages.dev/cve/CVE-2026-8272
  classification:
    cvss-metrics: CVSS:3.1/CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:L/I:L/A:L
    cvss-score: 4.7
    cve-id: CVE-2026-8272
    cwe-id: CWE-77
  tags: cve,cve-2026-8272,dlink,dns-320_firmware,medium

http:
  - method: GET
    path:
      - "{BaseURL}/"
      - "{BaseURL}/api/"
    matchers-condition: and
    matchers:
      - type: status
        status:
          - 200
      - type: word
        words:
          - "dns-320_firmware"
        part: body
🐍 PoC Exploit & Verification Probe (Python 3) poc_cve-2026-8272.py
# Proof-of-Concept Exploit & Verification Probe for CVE-2026-8272
# Target: dlink dns-320_firmware | CVSS: 4.7 (MEDIUM)
# Educational & Security Audit Purpose Only

import requests
import sys

def verify_vulnerability(target_url):
    print(f"[*] Auditing {target_url} for CVE-2026-8272 (dlink dns-320_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 dlink dns-320_firmware scope (2.06b01).")
        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-2026-8272.sh
# Recommended Remediation & Patching Commands for CVE-2026-8272
# 1. Update package via distribution package manager:
sudo apt-get update && sudo apt-get --only-upgrade install dns-320_firmware 2>/dev/null || \
sudo dnf upgrade dns-320_firmware 2>/dev/null || \
sudo yum update dns-320_firmware

# 2. Inspect installed package versions for vulnerable scope:
dpkg -l | grep -i dns-320_firmware 2>/dev/null || rpm -qa | grep -i dns-320_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.

❓ Frequently Asked Questions (FAQ) & Remediation Guide

How do I fix CVE-2026-8272 in dlink dns-320_firmware?

Review vendor-specific security notices and update dlink dns-320_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-2026-8272?

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-2026-8272?

CVE-2026-8272 is classified with a CVSS 3.1 Base Score of 4.7 (MEDIUM). Check the metric breakdown above for attack vector requirements.

Risk Snapshot
4.7
MEDIUM SEVERITY
CVE ID CVE-2026-8272
Weakness CWE-77
Vendor dlink
Product dns-320_firmware
Published 2026-05-11
Vector CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:L/I:L/A:L