SEPTEMBER 15, 2026
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Case File

CVE-2026-51687

CRITICAL · CVSS 9.1 EPSS 0.36% Public Exploit

Source: NVD + CISA KEV + EPSS · Published 2026-08-31 · Last synced 2026-09-15

CyberRota Analysis

AI-Generated

TOTOLINK T6 firmware version 4.1.5cu.748_B20211015 is vulnerable due to improper access control in the setWiFiEasyGuestCf function, enabling unauthenticated attackers to manipulate guest wireless access by sending a specially crafted POST request. This vulnerability could lead to unauthorized network access, potentially compromising the security of connected devices. Organizations using this firmware should prioritize patching to mitigate the risk of unauthorized access to their networks.

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-2026-51687
Severity
CRITICAL
CVSS
9.1
EPSS
0.36%

Original NVD Description

Incorrect access control in the setWiFiEasyGuestCf function of TOTOLINK T6 4.1.5cu.748_B20211015 allows unauthenticated attackers to create or weaken guest wireless access via sending a crafted POST request to /cgi-bin/cstecgi.cgi.