If you’re still using an older D-Link VPN router, it might be time to upgrade. A serious vulnerability has been discovered in several D-Link router models, exposing users to potential remote code execution (RCE) attacks. This flaw is particularly worrisome as it allows attackers to take full control of the device, potentially intercepting traffic or launching attacks on connected systems.

Which routers are affected?

The affected models include:

• DSR-150
• DSR-150N
• DSR-250
• DSR-250N

These devices reached their “end-of-life” (EOL) as of May 1, 2024, meaning they no longer receive firmware updates or support. D-Link has stated it will not release a patch for this vulnerability, making these routers especially vulnerable to exploitation. Users are strongly urged to replace these devices immediately, as they present a significant security risk in home and small business environments.

What makes this vulnerability dangerous?

The flaw, while not yet assigned a CVE identifier, allows remote attackers to execute commands without authentication via the router’s interface. Once compromised, a hacker could:

• Gain root access to the router.
• Manipulate or monitor internet traffic.
• Launch malware, ransomware, or distributed denial-of-service (DDoS) attacks.

Because routers serve as the gateway for all internet traffic on a network, they are prime targets for cybercriminals. These vulnerabilities make end-of-life routers like the DSR-150 series an easy target, especially since no further updates will be provided to mitigate the issue.

No workarounds, no patches

In its advisory, D-Link emphasized that continuing to use these routers is a significant risk. While users can download the latest available firmware, it does not protect against the discovered flaw. Some users might consider third-party firmware, but D-Link does not officially support this, and it often voids warranties.

What should you do?

If you own one of the affected models, your best course of action is to replace the device with a newer, supported model. Look for routers that offer robust security features, regular firmware updates, and support for modern protocols like WPA3.

For small businesses or home users, investing in a more secure networking setup can save you from the much larger cost of a potential breach.

The urgency to act cannot be overstated. As these vulnerabilities become public, the likelihood of widespread exploitation increases. Don’t wait—secure your network today.