CVE-2026-6274: Authentication Bypass in DTS Electronics' Redline WR3200

Synopsis

Authentication bypass in DTS Electronics' Redline WR3200 router firmware (versions 7.1.3 through before 7.1.8) allows a remote, unauthenticated attacker to reach protected functions that should be restricted by access controls. The vulnerability is reachable over the network with no credentials and no user interaction required. Successful exploitation gives the attacker full read, write, and availability control over the device. A patched-image rebuild at version 7.1.8 is available on HarborGuard for environments running an affected version.

HarborGuard Coverage

Exploit Conditions

• Network reachabilityRequired

  The attacker must be able to reach the device over the network; the vulnerable function is exposed via a network-accessible interface.

• AuthenticationNot required

  No credentials of any kind are needed; the bypass allows direct access to protected functions without authentication.

• Victim interactionNot required

  The attacker does not need any action from a user or administrator on the target device.

• Attack complexityDetail

  Exploitation is reliable and condition-free; no race conditions, special memory layout, or environmental factors need to be satisfied.

Blast Radius

• A successful attacker reads any configuration data, credentials, or stored secrets on the device.
• The attacker can write arbitrary configuration changes, including modifying routing rules, DNS settings, or admin credentials.
• The attacker can render the device unavailable by crashing firmware processes or forcing a factory reset.
• Because the device is a network router, a compromised unit gives the attacker a pivot point into the network segment it serves.