CVE-2025-65731 Auth bypass in n/a

Medium 6.8 Published 8 Jan 2026 Updated 9 Jan 2026

Attackers with physical access can execute arbitrary commands via the serial interface due to missing access control on the root terminal.

Exploited in the wild: Not known
Login needed: Not needed
Attackable: Local or same network only
Victim action needed: Not needed
Fix: None listed

What is CVE-2025-65731?

CVE-2025-65731 is a medium-severity authentication bypass vulnerability in Dlink Dir-605l Firmware, published on 8 Jan 2026. It can only be exploited from the same machine or local network, with no action from the victim.

Official description

An issue was discovered in D-Link Router DIR-605L (Hardware version F1; Firmware version: V6.02CN02) allowing an attacker with physical access to the UART pins to execute arbitrary commands due to presence of root terminal access on a serial interface without proper access control.

Weakness: CWE-306

Which versions are affected by CVE-2025-65731?

It affects 1 product.

Products include Dlink Dir-605l Firmware.

How do I fix CVE-2025-65731?

No fix has been published for CVE-2025-65731 yet. Limit exposure of the affected software until one is available.

Upgrade, and rotate credentials and sessions that may have been exposed. More about Authentication bypass.

Is CVE-2025-65731 being exploited?

It is not confirmed as exploited in the wild, but public exploit code for CVE-2025-65731 exists.

Public exploit code: 1 proofs of concept on GitHub.

All Dlink Dir-605l Firmware vulnerabilities

Sources

Also known as GHSA-rgwp-mjv4-q268.