TP-Link TL-MR6400 Administrative Web Interface stack-based overflow

Summaryinfo

A vulnerability labeled as critical has been found in TP-Link TL-MR6400. Affected by this vulnerability is an unknown functionality of the component Administrative Web Interface. The manipulation results in stack-based overflow. This vulnerability is reported as CVE-2026-17252. The attack can be launched remotely. No exploit exists.

Detailsinfo

A vulnerability was found in TP-Link TL-MR6400 (the affected version unknown). It has been classified as critical. Affected is an unknown part of the component Administrative Web Interface. The manipulation with an unknown input leads to a stack-based overflow vulnerability. CWE is classifying the issue as CWE-121. A stack-based buffer overflow condition is a condition where the buffer being overwritten is allocated on the stack (i.e., is a local variable or, rarely, a parameter to a function). This is going to have an impact on availability. CVE summarizes:

A stack-based out-of-bounds write vulnerability exists in the login request handling functionality of the administrative web interface of TP-Link TL-MR6400 v7 routers. An unauthenticated adjacent attacker can trigger the vulnerability by sending a specially crafted malformed HTTP request. Successful exploitation may cause the web service process to crash, resulting in a denial-of-service condition and temporary loss of access to the router's web management interface.

The advisory is shared for download at tp-link.com. This vulnerability is traded as CVE-2026-17252 since 07/25/2026. The exploitability is told to be easy. It is possible to launch the attack remotely. The exploitation doesn't require any form of authentication. There are neither technical details nor an exploit publicly available. The current price for an exploit might be approx. USD $0-$5k (estimation calculated on 08/21/2026).

There is no information about possible countermeasures known. It may be suggested to replace the affected object with an alternative product.

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Productinfo

Type

• Router Operating System

Vendor

• TP-Link

Name

• TL-MR6400

License

• commercial

Website

• Vendor: https://www.tp-link.com/

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