CVE-2026-1409
Beetel 777VR1 UART excessive authentication
- State
- Published
- Severity
- 1.0 Low
- Published
- Jan 25, 2026
- Updated
- Feb 23, 2026
- Reserved
- Jan 25, 2026
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.
Scores
| CVSS | Score | Vector | Source |
|---|---|---|---|
| 4.0 | 1.0 Low | CVSS: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 | VulDB |
| 3.1 | 2.0 Low | CVSS:3.1/AV:P/AC:H/PR:N/UI:N/S:U/C:L/I:N/A:N/E:P/RL:X/RC:R | VulDB |
| 3.0 | 2.0 Low | CVSS:3.0/AV:P/AC:H/PR:N/UI:N/S:U/C:L/I:N/A:N/E:P/RL:X/RC:R | VulDB |
| 2.0 | 1.2 Low | AV:L/AC:H/Au:N/C:P/I:N/A:N/E:POC/RL:ND/RC:UR | VulDB |
Weaknesses
Affected Products
| Product | Versions |
|---|---|
777VR1Beetel |
|
References
- VDB-342798 | Beetel 777VR1 UART excessive authenticationvdb-entrytechnical-description
- VDB-342798 | CTI Indicators (IOB, IOC, TTP)signaturepermissions-required
- Submit #739399 | Beetel Beetel 777VR1 Broadband Router Firmware Version: V01.00.09 / V01.00.09_55 CWE-307 Improper Restriction - Excessive Authentication Attemptsthird-party-advisory
- https://gist.github.com/raghav20232023/19900b427445adf37f64ae953611bfceexploit
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