CVE-2026-9030 Authenticated Denial-of-Service in HTTPD Service in TP-Link Archer A6
Authenticated attackers can crash the HTTPD service or reboot the device by exploiting a race condition in systool instruction handling.
- Exploited in the wild
- Not known
- Login needed
- An administrator
- Attackable
- Local or same network only
- Victim action needed
- Not needed
- Fix
- None listed
What is CVE-2026-9030?
CVE-2026-9030 is a medium-severity vulnerability in TP-Link Systems Inc. Archer A6 v4, published on 7 Aug 2026. It can only be exploited from the same machine or local network, with no action from the victim.
Official 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.
Weakness: CWE-362
Which versions are affected by CVE-2026-9030?
How do I fix CVE-2026-9030?
No fix has been published for CVE-2026-9030 yet. Limit exposure of the affected software until one is available.
Is CVE-2026-9030 being exploited?
There is no known exploitation of CVE-2026-9030 in the wild and no public exploit code.
Sources
Also known as GHSA-r6p4-crm5-rwvh.