CVE-2026-1143 HIGH

CVE-2026-1143: TOTOLINK A3700R cstecgi.cgi setWiFiEasyGuestCfg buffer overflow

Vendor Totolink
Product A3700R
Weakness CWE-120
Published January 19, 2026
Last update February 23, 2026
View on NVD All CVEs

CVSS base score

8.7/10
Attack vector Network
Attack complexity Low
Privileges required Low
User interaction None
Confidentiality —
Integrity —

CVSS vector

CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:P

What the vulnerability does

01Description

A weakness has been identified in TOTOLINK A3700R 9.1.2u.5822_B20200513. This affects the function setWiFiEasyGuestCfg of the file /cgi-bin/cstecgi.cgi. Executing a manipulation of the argument ssid can lead to buffer overflow. The attack may be launched remotely. The exploit has been made available to the public and could be used for attacks.

Key dates

02Disclosure timeline

January 19, 2026 CVE published
February 23, 2026 Record updated