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TI-2026-07938 Aliases CVE-2026-9031GHSA-7f4x-hjwm-h5px

Authenticated Denial-of-Service in HTTPD Service in TP-Link Archer A6

Priority LOW 30CWE-20Published · Updated

Key facts

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

Attack profile from CVSS 4.0 · CNA. Fix status from CNA.

Summary

An input validation vulnerability exists in the HTTP-WRITEOEM handler due to insufficient validation of user-supplied data before it is processed by internal flash-write handling logic. Successful exploitation may cause httpd process or device to crash, resulting in loss of access to the web interface and a denial-of-service condition.

Why it matters now

Exploitation None reported CISA SSVC · not in CISA KEV
EPSS 0.00256 17th percentileScored 2026-11-07
Fix Fixed Archer A6 v4 (TP-Link Systems Inc.): V4_1.15.10 Build 260625 Rel.25447

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-LinkArcher A6 v4before V4_1.15.10 Build 260625 Rel.25447V4_1.15.10 Build 260625 Rel.25447Patch availableCNA
  • Archer A6 v4 VendorTP-Link Affected before V4_1.15.10 Build 260625 Rel.25447 Fixed in V4_1.15.10 Build 260625 Rel.25447 Patch available CNA

Remediation

  • Fix · CNA Archer A6 v4 (TP-Link Systems Inc.) Fixed in V4_1.15.10 Build 260625 Rel.25447

Fixed in the same release

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

  • Advisory ·

    TP-Link Systems Archer A6 v4 — tp-link.com/en/support/faq/5234

    2 records Highest priority Priority LOW 2 LOW

    Other records, highest priority first

    • TI-2026-07937 Authenticated Denial-of-Service in HTTPD Service in TP-Link Archer A6Priority LOW 29
    Show all 2 records → Advisory →

Timeline

  1. 2026-10-02 Threatist record created from CVE-2026-9031
  2. 2026-10-03 Alias added: GHSA-7f4x-hjwm-h5px

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