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TI-2026-14292 Aliases CVE-2026-17251GHSA-cfmx-mjrq-52xj

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

Priority LOW 32CWE-476Published · Updated

Key facts

Attack vector
Adjacent network
Privileges required
None
User interaction
None
Attack complexity
Low
Attack requirements
None
Impact type
Denial of service
Confidentiality · integrity · availability
None · None · High
Fix status
Fixed

Attack profile from CVSS 4.0 · CNA. Fix status from CNA. Impact type from CWE-476.

Summary

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.

Why it matters now

Exploitation None reported CISA SSVC · not in CISA KEV
EPSS 0.0047 40th percentileScored 2026-11-07
Fix Fixed TL-MR6400 v7.0 (TP-Link Systems Inc.): 1.9.0 Build 260714

SSVC decision points

CISA ADP · SSVC 2.0.3

Exploitation
None
Automatable
No
Technical impact
Partial

The decision (Track, Attend, Act) also depends on your mission and well-being impact; see CISA's SSVC guide.

Affected products

VendorProductAffected versionsFixed inStatusSource
TP-LinkTL-MR6400 v7.0before 1.9.0 Build 2607141.9.0 Build 260714Patch availableCNA
  • TL-MR6400 v7.0 VendorTP-Link Affected before 1.9.0 Build 260714 Fixed in 1.9.0 Build 260714 Patch available CNA

Remediation

  • Fix · CNA TL-MR6400 v7.0 (TP-Link Systems Inc.) Fixed in 1.9.0 Build 260714

Fixed in the same release

Records fixed by the same vendor advisory or release, as the CNA lists them.

  • Advisory ·

    TP-Link Systems TL-MR6400 v7.0 — tp-link.com/us/support/faq/5259

    3 records Highest priority Priority LOW 3 LOW

    Other records, highest priority first

    • TI-2026-14291 Authenticated Remote Code Execution via Stack-Based Buffer Overflow in Firmware Update HandlingPriority LOW 39
    • TI-2026-14293 Out-of-bounds write in TP-Link TL-MR6400 v7.0Priority LOW 31
    Show all 3 records → Advisory →

Timeline

  1. 2026-10-02 Threatist record created from CVE-2026-17251
  2. 2026-10-03 Alias added: GHSA-cfmx-mjrq-52xj

References

Patch 2

Advisory 1

  • TI-2023-16571 TP-Link TL-WR940N V2/V4, TL-WR841N V8/V10, and TL-WR740N V1/V2 was discovered to contain… KEVCVSS 3.1HIGH 8.8
  • TI-2023-01313 Command injection in TP-Link Archer AX21 KEVCVSS 3.1HIGH 8.8
  • TI-2020-14907 TP-Link TL-WA855RE V5 20200415-rel37464 devices allow an unauthenticated attacker (on the… KEVCVSS 3.1HIGH 8.8
  • TI-2025-08589 Authenticated RCE via Parental Control command injection KEVCVSS 4.0HIGH 8.6
  • TI-2015-02672 Directory traversal vulnerability in TP-LINK Archer C5 (1.2) with firmware before 150317… KEVCVSS 3.1HIGH 7.5
  • TI-2023-27456 Authentication bypass by spoofing in TP-Link TL-WR841N KEVCVSS 3.1MEDIUM 6.5
See all 636 →

Sources

This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences