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.
History

Fri, 21 Aug 2026 20:45:00 +0000

Type Values Removed Values Added
First Time appeared Tp-link
Tp-link tl-mr6400 V7
Vendors & Products Tp-link
Tp-link tl-mr6400 V7

Fri, 21 Aug 2026 18:30:00 +0000

Type Values Removed Values Added
Metrics ssvc

{'options': {'Automatable': 'no', 'Exploitation': 'none', 'Technical Impact': 'partial'}, 'version': '2.0.3'}


Fri, 21 Aug 2026 17:30:00 +0000

Type Values Removed Values Added
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.
Title Unauthenticated Denial of Service via Null Pointer Dereference in HTTP Request Parsing
Weaknesses CWE-476
References
Metrics cvssV4_0

{'score': 7.1, 'vector': 'CVSS:4.0/AV:A/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N'}


cve-icon MITRE

Status: PUBLISHED

Assigner: TPLink

Published:

Updated: 2026-08-21T17:40:36.098Z

Reserved: 2026-07-24T22:03:11.872Z

Link: CVE-2026-17251

cve-icon Vulnrichment

Updated: 2026-08-21T17:40:31.686Z

cve-icon NVD

Status : Received

Published: 2026-08-21T18:16:47.660

Modified: 2026-08-21T18:16:47.660

Link: CVE-2026-17251

cve-icon Redhat

No data.

cve-icon OpenCVE Enrichment

Updated: 2026-08-21T20:30:07Z