SEPTEMBER 17, 2026
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Case File

CVE-2026-51761

MEDIUM · CVSS 5.3 EPSS 0.29% Public Exploit

Source: NVD + CISA KEV + EPSS · Published 2026-09-01 · Last synced 2026-09-17

CyberRota Analysis

AI-Generated

TOTOLINK T6 devices running firmware version 4.1.5cu.748_B20211015 are vulnerable due to improper access control in the updateLanIp function, allowing unauthenticated attackers to manipulate the LAN address state by sending specially crafted MQTT messages. This could lead to unauthorized network access or disruption of service. Network administrators and users of affected TOTOLINK devices should prioritize applying security updates to mitigate this risk.

Public Exploit Signal

A public exploit, PoC, GitHub repository or Metasploit reference was detected for this CVE.

GitHub PoC Links
github.com ↗ github.com ↗

Note: these links are listed for security research and verification purposes only.

CVE
CVE-2026-51761
Severity
MEDIUM
CVSS
5.3
EPSS
0.29%

Original NVD Description

Incorrect access control in the updateLanIp function of TOTOLINK T6 4.1.5cu.748_B20211015 allows unauthenticated attackers to refresh the LAN address state via sending a crafted MQTT message to the cs_broker component.