CVE-2026-1158CWE-119CWE-120

Totolink LR350 POST Request cstecgi.cgi setWizardCfg buffer overflow

High · published January 19, 2026

CVSS v4.0
8.7
EPSS
1%
Percentile
53.9
In the wild
Unconfirmed
What it is

🚨 A remote attacker can exploit a buffer overflow in Totolink LR350, potentially taking control with a single malicious request! 🔥 Think of this vulnerability like a waiter who accidentally serves an oversized meal that spills all over the table, causing chaos in the restaurant. The waiter trusts the order without checking, and suddenly, anyone can grab whatever they want from the kitchen! If successfully exploited, an attacker could crash the device or execute arbitrary code, opening the floodgates for further compromise. This means they could snoop on your network traffic or even manipulate device settings as if they were the owner! That's absolutely devastating!

Put simply

Think of this vulnerability like a waiter who accidentally serves an oversized meal that spills all over the table, causing chaos in the restaurant. The waiter trusts the order without checking, and suddenly, anyone can grab whatever they want from the kitchen! The vulnerability in question occurs in the setWizardCfg function within the /cgi-bin/cstecgi.cgi file, where an attacker can manipulate the 'ssid' argument leading to a buffer overflow. This allows the possibility of remote code execution without any authentication required.

What to do

If successfully exploited, an attacker could crash the device or execute arbitrary code, opening the floodgates for further compromise. This means they could snoop on your network traffic or even manipulate device settings as if they were the owner! That's absolutely devastating! To mitigate this vulnerability, update your Totolink LR350 to the latest firmware immediately. It's also wise to review your network settings to ensure that only trusted devices can connect and consider disabling remote access features if they are not needed. This is fixable! Follow the steps above and you'll have your network secured in no time. 🛡️

The record
Technical detail
CVSS v4.0
8.7 · HIGH
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
EPSS
0.00736 · 53.9th percentile
Weaknesses
CWE-119 · Improper Restriction of Operations within the Bounds of a Memory Buffer; CWE-120 · Buffer Copy without Checking Size of Input ('Classic Buffer Overflow')
Published
2026-01-19T14:32Z
EPSS history
Timeline
  • 19 JAN 14:32Z
    Totolink LR350 POST Request cstecgi.cgi setWizardCfg buffer overflow
    cvelistv5