TP-Link Archer AX55 EasyMesh stack-based overflow

Summaryinfo

A vulnerability was found in TP-Link Archer AX55. It has been declared as very critical. The impacted element is an unknown function of the component EasyMesh. Executing a manipulation can lead to stack-based overflow. The identification of this vulnerability is CVE-2026-18167. The attack may be launched remotely. There is no exploit available.

Detailsinfo

A vulnerability has been found in TP-Link Archer AX55 (version now known) and classified as very critical. This vulnerability affects some unknown processing of the component EasyMesh. The manipulation with an unknown input leads to a stack-based overflow vulnerability. The CWE definition for the vulnerability is CWE-121. A stack-based buffer overflow condition is a condition where the buffer being overwritten is allocated on the stack (i.e., is a local variable or, rarely, a parameter to a function). As an impact it is known to affect confidentiality, integrity, and availability. CVE summarizes:

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.

The advisory is available at tp-link.com. This vulnerability was named CVE-2026-18167 since 07/28/2026. The exploitation appears to be easy. The attack can be initiated remotely. No form of authentication is required for a successful exploitation. The technical details are unknown and an exploit is not available. The structure of the vulnerability defines a possible price range of USD $0-$5k at the moment (estimation calculated on 09/04/2026).

There is no information about possible countermeasures known. It may be suggested to replace the affected object with an alternative product.

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Productinfo

Vendor

• TP-Link

Name

• Archer AX55

License

• commercial

Website

• Vendor: https://www.tp-link.com/

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