CVE-2026-76652: Authenticated Directory Traversal Vulnerability in File Upload Functionality in TP-Link TL-MR6400 and Archer MR600
An authenticated directory traversal vulnerability in file upload functionality has been identified in Archer MR600 (v2, v3 & v5) and TL-MR6400 v8. Due to insufficient validation of user-supplied file information, an authenticated remote attacker with access to the affected upload functionality could upload a specially crafted file and cause it to be written outside the intended directory.
Successful exploitation could allow an authenticated remote attacker to write files to unintended locations, potentially overwriting or modifying files accessible to the affected service; arbitrary code execution has not been demonstrated.
Affected Software
Event History
Frequently Asked Questions
Which device versions are affected?
Affected models are TP-Link Archer MR600 hardware versions v2, v3, and v5, and TP-Link TL-MR6400 hardware version v8.
What access does an attacker need to exploit this issue?
An attacker must be authenticated and have access to the affected file-upload functionality. The issue can be exploited remotely by supplying specially crafted file information.
What is the demonstrated impact?
A successful attacker can cause uploaded files to be written outside the intended directory, potentially overwriting or modifying files accessible to the affected service. Arbitrary code execution has not been demonstrated.