CVE-2014-100005: D-Link DIR-600 Router Cross-Site Request Forgery (CSRF) Vulnerability

CVE-2014-100005 is a cross-site request forgery vulnerability in D-Link DIR-600 routers. It allows an attacker to change router configurations by hijacking an existing administrator session. This matters because successful abuse can alter network settings, potentially enabling further unauthorized access or disruption on devices that sit at the edge of many small networks.

The issue affects legacy D-Link hardware that has reached end-of-life or end-of-service status. Defenders should treat it as a high-priority inventory and retirement item rather than a routine patch exercise.

How it works

The flaw belongs to CWE-352, cross-site request forgery. In this class of weakness, a web application fails to verify that state-changing requests originate from a legitimate user action rather than from a forged request crafted by an attacker. For the D-Link DIR-600, the CISA summary states that an attacker can change router configurations by hijacking an existing administrator session.

In practical terms, if an administrator is already authenticated to the router’s management interface, a malicious page or other content the administrator visits can cause the browser to issue configuration-changing requests that the router accepts as valid. Exact request formats, parameters, or attack vectors are not detailed in the provided facts; confirm any technical specifics against the vendor advisory. The result is unauthorized modification of router settings without the administrator deliberately submitting those changes.

Am I affected? How to find it in your systems

The vulnerability is documented only for the D-Link DIR-600 router. These devices commonly appear in home, small-office, or branch networks as consumer-grade wireless gateways. They are no longer supported; all associated hardware revisions have reached end-of-life or end-of-service.

• Inventory network devices by model: check physical labels, DHCP client lists, and management interfaces for “DIR-600” or similar D-Link identifiers.
• Scan internal address ranges for open HTTP/HTTPS management ports and identify the device banner or web UI title.
• Review asset-management or configuration-management databases for any remaining DIR-600 entries.
• Because the product is EOL/EOS, any still-running unit should be treated as affected until proven otherwise; confirm version and configuration details against the vendor advisory if any residual documentation remains available.

Log or telemetry signs of exploitation are not specified in the facts. Monitor for unexpected configuration changes, new administrative accounts, altered DNS or firewall rules, or sudden reboots that coincide with administrator browser activity. Absent specific indicators, rely on configuration baselines and change-detection rather than signature hunting.

How to remediate

CISA’s required action is clear: this vulnerability affects legacy D-Link products whose hardware revisions have reached end-of-life or end-of-service. Retire and replace the devices per vendor instructions. No ongoing firmware support is expected.

• Schedule immediate replacement of every DIR-600 with a currently supported router that receives security updates.
• Before decommissioning, export any needed configuration data, then factory-reset and securely dispose of the old unit.
• After replacement, re-apply network segmentation, strong administrative credentials, and least-privilege access controls on the new device.
• Document the retirement in your asset inventory so the model does not reappear through spare-stock reuse.

If any vendor-supplied update or mitigation note still exists for residual units, apply it only after confirming applicability against the official advisory; do not assume a patch is available for EOL hardware.

If you can't patch immediately

Because the product is end-of-life, “patching” is not a realistic option. Focus on compensating controls that reduce exposure until replacement can be completed.

• Segment the router: place it behind a more modern firewall or isolate its management interface to a dedicated, tightly controlled network segment that administrators reach only via jump hosts or VPN.
• Disable remote management entirely if it is enabled; restrict administrative access to the LAN side and require physical or strongly authenticated local access.
• Apply virtual patching or WAF rules that block cross-site request patterns targeting the router’s management endpoints, if a suitable proxy or gateway sits in front of the device.
• Enforce short administrative session timeouts and require re-authentication for any configuration change.
• Increase monitoring: alert on any configuration change, new DHCP leases, or DNS modifications originating from the device; capture and review management-interface traffic where feasible.
• Educate administrators not to browse untrusted sites while logged into the router UI.

These measures lower the likelihood of successful CSRF abuse but do not eliminate the underlying weakness; replacement remains the only durable fix.

If your data may have been exposed

Actively exploited vulnerabilities of this class can lead to broader network compromise and data exposure once an attacker gains control of the router. Known ransomware use is not documented for this CVE. If you suspect the device was abused, treat any credentials, traffic, or systems that traversed it as potentially compromised: rotate passwords, review connected hosts for secondary compromise, and examine logs for lateral movement. Readers can run a free exposure scan of their email addresses against known breach data sets to check whether related accounts appear in public breach collections.