CVE-2026-4976 HIGH

CVE-2026-4976: Totolink LR350 cstecgi.cgi setWiFiGuestCfg buffer overflow

Vendor Totolink
Product LR350
Weakness CWE-120
Published March 27, 2026
Last update March 30, 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 vulnerability was found in Totolink LR350 9.3.5u.6369_B20220309. This vulnerability affects the function setWiFiGuestCfg of the file /cgi-bin/cstecgi.cgi. The manipulation of the argument ssid results in buffer overflow. The attack can be launched remotely. The exploit has been made public and could be used.

Key dates

02Disclosure timeline

March 27, 2026 CVE published
March 30, 2026 Record updated