CVE-2026-1409

EUVD-2026-4683 · Published Jan 26, 2026

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.

Technologies

Beetel 777Vr1 FirmwareBeetel 777Vr1

Weaknesses

CWE-307CWE-799

CVSS scores

v4.00.3CVSS:4.0/AV:P/AC:H/AT:N/PR:N/UI:N/VC:L/VI:N/VA:N/SC:N/SI:N/SA:N/E:P/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X
v3.14.2CVSS:3.1/AV:P/AC:H/PR:N/UI:N/S:U/C:H/I:N/A:N
v2.01.2AV:L/AC:H/Au:N/C:P/I:N/A:N

MITRE ATT&CK

Inferred

Where this vulnerability fits in an attack

ReconImpact

Initial Access Persistence Privilege Escalation Stealth Credential Access

T1068Exploitation for Privilege Escalation T1078Valid Accounts T1110.001Password Guessing T1110.003Password Spraying T1110.004Credential Stuffing T1558Steal or Forge Kerberos Tickets

References

Potentially impacted assets

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