Skip to content
COOEY

FAIL › dossier

ex1200t

PRODUCT

· dossier confidence 90%

The EX1200T router firmware contains multiple critical unpatched vulnerabilities including remote code execution and authentication bypass flaws.

PROFILE
Categorynetworking hardwareWhat they doThe EX1200T is a TOTOLINK router model.
SECURITY POSTURE

The EX1200T firmware has a critical track record of unpatched remote code execution and authentication bypass vulnerabilities in the same firmware version.

Notable failures
  • CVE-2021-42875 RCE
  • CVE-2021-42872 RCE
  • CVE-2025-51451 auth bypass
Patterns: repeated unpatched critical RCEs in same firmware; authentication bypass via form handling
FAILURE HISTORY · 3
DATEEVENTSEVSUMMARY
2022-06-02 CVE-2021-42875 critical TOTOLINK EX1200T V4.1.2cu.5215 contains a remote command injection vulnerability in the function setDiagnosisCfg of the file lib/cste_modules/system.so to control the ipDoamin.
2022-06-02 CVE-2021-42872 critical TOTOLINK EX1200T V4.1.2cu.5215 is affected by a command injection vulnerability that can remotely execute arbitrary code.
2025-08-13 CVE-2025-51451 critical In TOTOLINK EX1200T firmware 4.1.2cu.5215, an attacker can bypass login by sending a specific request through formLoginAuth.htm.
DOSSIER · dex-RAG synthesis · grounded in our own collection + trusted sourcesbuilt 2026-08-20 19:09:01.361630+00:00