CVE-2026-9030

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

Published Aug 7, 2026 CVSS 4.0 · 6.8 Medium EPSS < 1% KEV · Not listed
Description
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.

Remediation

No solution or workaround provided in the CVE record

Tracking

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Advisories

No advisories available
History
Type Values Removed Values Added
Metrics ssvc

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

Type Values Removed Values Added
First Time appeared Tp-link
Tp-link archer A6 V4
Vendors & Products Tp-link
Tp-link archer A6 V4
Type Values Removed Values Added
Description 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.
Title Authenticated Denial-of-Service in HTTPD Service in TP-Link Archer A6
Weaknesses CWE-362
References
Metrics cvssV4_0

{'score': 6.8, 'vector': 'CVSS:4.0/AV:A/AC:L/AT:N/PR:H/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N'}

Weaknesses

Sources

Status
PUBLISHED
Assigner
TPLink
Published
Updated
Aug 10, 2026, 6:23 PM
Reserved
May 19, 2026, 4:30 PM
Status
Awaiting Analysis
Published
Aug 7, 2026, 9:17 PM
Modified
Oct 24, 2026, 1:10 PM