SEPTEMBER 15, 2026
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Case File

CVE-2026-51686

CRITICAL · CVSS 9.8 EPSS 0.44% 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 incorrect access control in the setWiFiEasyCfg function, allowing unauthenticated attackers to modify or disable wireless network settings through a crafted POST request to /cgi-bin/cstecgi.cgi. This vulnerability poses a significant risk to network integrity and availability, making it critical for organizations using this device to prioritize immediate remediation. Network administrators and security teams should assess their exposure and apply necessary updates or mitigations to safeguard against potential exploitation.

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-2026-51686
Severity
CRITICAL
CVSS
9.8
EPSS
0.44%

Original NVD Description

Incorrect access control in the setWiFiEasyCfg function of TOTOLINK T6 4.1.5cu.748_B20211015 allows unauthenticated attackers to reconfigure or disable wireless networks via sending a crafted POST request to /cgi-bin/cstecgi.cgi.