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CVE-2026-1409— Beetel 777VR1 UART excessive authentication

Quick assessment

Affected
Beetel 777VR1
Exploitation
No confirmed in-the-wild exploitation; assess based on exposure
Recommended action
Check the vendor advisory and references for a fixed version. If immediate upgrade is impossible, restrict exposure and increase monitoring.

Beetel 777VR1是Beetel公司的一款路由器。 Beetel 777VR1 01.00.09/01.00.09_55及之前版本存在安全漏洞，该漏洞源于对UART接口组件的操作，可能导致身份验证尝试次数限制不当。

CVSS 2.0 · Low EPSS 0.38% · P30
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I. Basic Information for CVE-2026-1409

Vulnerability Information
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Vulnerability Title
Beetel 777VR1 UART excessive authentication
Source: CVE Program / CVE List V5
Vulnerability 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.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:P/AC:H/PR:N/UI:N/S:U/C:L/I:N/A:N
Source: CVE Program / CVE List V5
Vulnerability Type
过多认证尝试的限制不恰当
Source: CVE Program / CVE List V5
Vulnerability Title
Beetel 777VR1 安全漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
Beetel 777VR1是Beetel公司的一款路由器。 Beetel 777VR1 01.00.09/01.00.09_55及之前版本存在安全漏洞，该漏洞源于对UART接口组件的操作，可能导致身份验证尝试次数限制不当。
Source: CNNVD (China National Vulnerability Database)
CVSS Information
N/A
Source: CNNVD (China National Vulnerability Database)
Vulnerability Type
N/A
Source: CNNVD (China National Vulnerability Database)

Affected Products

Vendor Product Affected Versions CPE Subscribe
Beetel 777VR1 01.00.09 -

II. Public POCs for CVE-2026-1409

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III. Intelligence Information for CVE-2026-1409

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Vendor Advisories for CVE-2026-1409 (1)

Proof of Concept for CVE-2026-1409 (1)

Same Patch Batch · Beetel · 2026-01-25 · 3 CVEs total

CVE-2026-1407 2.0 LOW Beetel 777VR1 UART information disclosure
CVE-2026-1408 2.0 LOW Beetel 777VR1 UART weak password

IV. Related Vulnerabilities

Same product: 777VR1
Same vendor: Beetel
Same weakness: CWE-307

V. Comments for CVE-2026-1409

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