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TI-2026-07937 Aliases CVE-2026-9030GHSA-r6p4-crm5-rwvh

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

Priority LOW 29CWE-362Published · 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

A denial-of-service vulnerability exists in httpd service on Archer A6 v4 where the asynchronous systool instruction handlng path in httpd does not properly synchronize or safely manage concurrent systool operations.  By sending crafted systool instructions through the asynchronous request path, successful exploitation may cause the httpd process or device management service to crash and may result in temporary loss of access to the web management interface or device reboot.

Why it matters now

Exploitation None reported CISA SSVC · not in CISA KEV
EPSS 0.00197 9th 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-2026-07938 Authenticated Denial-of-Service in HTTPD Service in TP-Link Archer A6Priority LOW 30
    Show all 2 records → Advisory →

Timeline

  1. 2026-10-02 Threatist record created from CVE-2026-9030
  2. 2026-10-03 Alias added: GHSA-r6p4-crm5-rwvh

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