Sunday, June 15, 2025
HomeIoTMultiple Vulnerabilities in D-Link Routers Allows Hackers Gain Complete Control & Extract...

Multiple Vulnerabilities in D-Link Routers Allows Hackers Gain Complete Control & Extract Sensitive Data

Published on

SIEM as a Service

Follow Us on Google News

Set of 4 Vulnerabilities are discovered in D-Link DIR-620 firmware that allows an attacker to exploit with the hardcoded default credentials to gain high privileged access to the firmware.

D-Link routers are one of the biggest ISPs in Russia based on the Router login string contains hardcoded credentials with the name of the ISP.

The Vulnerabilities allow attack could gain the privileged access to the firmware that leads to extract the sensitive data such as Plain text Passwords.

- Advertisement - Google News

It also affected the web interface that allows an attacker to run arbitrary commands in the router’s operating system and arbitrary JavaScript code in the user environment.

These vulnerabilities initially identified in firmware version 1.0.37 and the few vulnerabilities affected other versions( 1.3.1, 1.3.3, 1.4.0, 2.0.22) of the firmware.

 D-Link Routers Vulnerabilities

There are 4 critical vulnerabilities are reporting and all the vulnerabilities contain the high severity rate that causes very serious damages.

  1. Reflected cross-site scripting (CVE-2018-6212)
  2. Default credentials for web dashboard (CVE-2018-6213)
  3. OS command injection  (CVE-2018-6211)
  4. Default credentials for Telnet (CVE-2018-6210)

Cross-site scripting(XSS)

Researchers discovered reflected cross-site scripting(XSS) vulnerability in one the D-link router field due to poor user data validation and incorrect processing of the XMLHttpRequest object.

This vulnerability was discovered in v.1.3.3 and other versions.

Default credentials for web Dashboard

D-Link contains default credentials for web dashboard which cannot be changed by administrators which leads to attacker gain the sensitive data from Vulnerable routers.

According to Kaspersky Researcher, I extracted strings from the web server binary (httpd), and my attention was immediately drawn to the “anonymous” string. I looked at the function where this string was being used.

OS Command Injection

An OS Command injection vulnerability discovered in D – v.1.0.3  that leads to processing incorrectly user’s input data.

Default Credentials for Telnet

This critical vulnerability allows an attacker to extract Telnet credentials. In this case, the attacker also gain the admin level access by using the default credentials.

Mitigation :

  • Restrict any access to the web dashboard using a whitelist of trusted IPs
  • Restrict any access to Telnet
  • Regularly change your router admin username and password
Balaji
Balaji
BALAJI is an Ex-Security Researcher (Threat Research Labs) at Comodo Cybersecurity. Editor-in-Chief & Co-Founder - Cyber Security News & GBHackers On Security.

Latest articles

Kali Linux 2025.2 Released: New Tools, Smartwatch and Car Hacking Added

Kali Linux, the preferred distribution for security professionals, has launched its second major release...

Arsen Launches AI-Powered Vishing Simulation to Help Organizations Combat Voice Phishing at Scale

Arsen, the cybersecurity startup known for defending organizations against social engineering threats, has announced...

NIST Releases New Guide – 19 Strategies for Building Zero Trust Architectures

The National Institute of Standards and Technology (NIST) has released groundbreaking guidance to help...

Spring Framework Flaw Enables Remote File Disclosure via “Content‑Disposition” Header

A medium-severity reflected file download (RFD) vulnerability (CVE-2025-41234) in VMware's Spring Framework has been...

Credential Abuse: 15-Min Attack Simulation

Credential Abuse Unmasked

Credential abuse is #1 attack vector in web and API breaches today (Verizon DBIR 2025). Join our live, 15-min attack simulation with Karthik Krishnamoorthy (CTO - Indusface) and Phani Deepak Akella (VP of Marketing - Indusface) to see hackers move from first probe to full account takeover.

Discussion points


Username & email enumeration – how a stray status-code reveals valid accounts.
Password spraying – low-and-slow guesses that evade basic lockouts.
Credential stuffing – lightning-fast reuse of breach combos at scale.
MFA / session-token bypass – sliding past second factors with stolen cookies.

More like this

Spring Framework Flaw Enables Remote File Disclosure via “Content‑Disposition” Header

A medium-severity reflected file download (RFD) vulnerability (CVE-2025-41234) in VMware's Spring Framework has been...

Microsoft Defender Spoofing Flaw Enables Privilege Escalation and AD Access

A newly disclosed spoofing vulnerability (CVE-2025-26685) in Microsoft Defender for Identity (MDI) enables unauthenticated...

Amazon Cloud Cam Flaw Allows Attackers to Intercept and Modify Network Traffic

A critical vulnerability (CVE-2025-6031) has been identified in Amazon Cloud Cam devices, which reached...