CVE-2026-18167 Stack-based buffer overflow in TP-Link Archer AX55 v4
A stack-based buffer overflow in the EasyMesh module allows LAN attackers to crash the daemon or potentially execute code when Mesh mode is enabled.
- Exploited in the wild
- Not known
- Login needed
- Not needed
- Attackable
- Local or same network only
- Victim action needed
- Not needed
- Fix
- None listed
What is CVE-2026-18167?
CVE-2026-18167 is a high-severity memory corruption vulnerability in TP-Link Systems Inc. Archer AX55 v4, published on 3 Sep 2026. It can only be exploited from the same machine or local network, with no action from the victim.
Official description
A stack-based buffer overflow vulnerability exists in the EasyMesh module of TP-Link Archer AX55 v4. When Mesh mode is enabled, a LAN attacker may submit crafted input that causes the easymesh daemon to crash and may potentially achieve remote code execution on the device.
Successful exploitation may cause the EasyMesh daemon to crash and may potentially allow remote code execution when Mesh mode is enabled. This may result in high impact to the confidentiality, integrity, and availability of the affected device.
Weakness: CWE-121
Which versions are affected by CVE-2026-18167?
How do I fix CVE-2026-18167?
No fix has been published for CVE-2026-18167 yet. Limit exposure of the affected software until one is available.
Upgrade to the fixed version. Memory-safe languages, compiler hardening and fuzzing prevent most new cases. More about Memory corruption.
Is CVE-2026-18167 being exploited?
There is no known exploitation of CVE-2026-18167 in the wild and no public exploit code.
Sources
Also known as GHSA-6hpq-jhqf-p8v4.