CVE-2026-1408 Beetel 777VR1 UART weak password

Low 1.0 Published 25 Jan 2026 Updated 23 Feb 2026

Attackers with physical access can exploit weak UART password requirements to bypass authentication on Beetel 777VR1 devices.

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-2026-1408?

CVE-2026-1408 is a low-severity vulnerability in Beetel 777VR1, published on 25 Jan 2026. It can only be exploited from the same machine or local network, with no action from the victim.

Official description

A weakness has been identified in Beetel 777VR1 up to 01.00.09/01.00.09_55. This vulnerability affects unknown code of the component UART Interface. Executing a manipulation can lead to weak password requirements. The physical device can be targeted for the attack. The attack requires a high level of complexity. It is stated that the exploitability is difficult. The exploit has been made available to the public and could be used for attacks. The vendor was contacted early about this disclosure but did not respond in any way.

Weakness: CWE-521

Which versions are affected by CVE-2026-1408?

It affects 1 product.

Products include Beetel 777vr1 Firmware.

How do I fix CVE-2026-1408?

No fix has been published for CVE-2026-1408 yet. Limit exposure of the affected software until one is available.

Is CVE-2026-1408 being exploited?

It is not confirmed as exploited in the wild, but public exploit code for CVE-2026-1408 exists.

Sources

Also known as GHSA-rgjg-mj5f-rchp.