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High · 7.1 CVE-2026-17251 EUVD-2026-64007GHSA-cfmx-mjrq-52xj

Unauthenticated Denial of Service via Null Pointer Dereference in HTTP Request Parsing

Published Aug 21, 2026 · Updated Aug 21, 2026 · Assigned by TPLink

Description

A NULL
pointer dereference vulnerability exists in the HTTP request parsing
functionality of 
TL-MR6400 v7. An unauthenticated remote attacker can
trigger the vulnerability by sending a specially crafted HTTP request
containing a malformed session cookie header.

Successful
exploitation may cause the HTTP service process to crash, resulting in a
denial-of-service condition and temporary loss of management or CGI
functionality until service recovery.

Affected products

VendorProductAffectedFixed
TP-Link Systems TL-MR6400 v7.0 < 1.9.0 Build 260714 1.9.0 Build 260714

References