CVE-2025-51451

In TOTOLINK EX1200T firmware 4.1.2cu.5215, an attacker can bypass login by sending a specific request through formLoginAuth.htm

Critical · published August 13, 2025

CVSS v3.1
9.8
EPSS
0%
Percentile
31.3
In the wild
Unconfirmed
What it is

🚨 A crafty request can bypass login on TOTOLINK EX1200T! Just send a specific command through formLoginAuth.htm, and poof – you're in! 🔥 It's like a hotel that accepts any room key without checking its authenticity, allowing anyone to waltz right into your suite! Just one clever request is all it takes to open the door. An attacker could gain unauthorized access to your network, potentially wreaking havoc — stealing sensitive data, altering settings, or even turning your device into a bot for further malicious activities. This could lead to devastating consequences for your privacy and security!

Put simply

It's like a hotel that accepts any room key without checking its authenticity, allowing anyone to waltz right into your suite! Just one clever request is all it takes to open the door. This vulnerability allows an attacker to bypass authentication by sending a specially crafted request to the login handler, leaving your device completely exposed without any required credentials.

What to do

An attacker could gain unauthorized access to your network, potentially wreaking havoc — stealing sensitive data, altering settings, or even turning your device into a bot for further malicious activities. This could lead to devastating consequences for your privacy and security! Update your TOTOLINK EX1200T firmware to the latest version immediately to patch this vulnerability. Also, consider changing the default credentials and regularly auditing access logs for suspicious activity. Don't wait — secure your network now! You've got this! By following these steps, you'll reinforce your defenses and keep your network safe! 🛡️

The record
Technical detail
CVSS v3.1
9.8 · CRITICAL
Vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
CVSS v4.0
Not supplied
EPSS
0.00384 · 31.3th percentile
Published
2025-08-13T00:00Z
EPSS history
Timeline
  • 13 AUG 00:00Z
    In TOTOLINK EX1200T firmware 4.1.2cu.5215, an attacker can bypass login by sending a specific request through formLoginAuth.htm
    cvelistv5