CVE-2026-1409 Beetel 777VR1 UART excessive authentication
Attackers with physical access can bypass authentication rate limits on the UART interface of 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-2026-1409?
CVE-2026-1409 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 security vulnerability has been detected in Beetel 777VR1 up to 01.00.09/01.00.09_55. This issue affects some unknown processing of the component UART Interface. The manipulation leads to improper restriction of excessive authentication attempts. It is possible to launch the attack on the physical device. The attack's complexity is rated as high. The exploitability is assessed as difficult. The exploit has been disclosed publicly and may be used. The vendor was contacted early about this disclosure but did not respond in any way.
Which versions are affected by CVE-2026-1409?
It affects 1 product.
Products include Beetel 777vr1 Firmware.
How do I fix CVE-2026-1409?
No fix has been published for CVE-2026-1409 yet. Limit exposure of the affected software until one is available.
Is CVE-2026-1409 being exploited?
It is not confirmed as exploited in the wild, but public exploit code for CVE-2026-1409 exists.
Other vulnerabilities in Beetel 777VR1
Sources
Also known as GHSA-64m7-cfx3-hg77.