TP-Link Kasa EC70/Kasa EC71 Debug Interface/Bootloader privileges management

Summaryinfo

A vulnerability described as very critical has been identified in TP-Link Kasa EC70 and Kasa EC71. This affects an unknown function of the component Debug Interface/Bootloader. Executing a manipulation can lead to privileges management. This vulnerability is handled as CVE-2026-102370. It is possible to launch the attack on the local host. There is not any exploit available.

Detailsinfo

A vulnerability has been found in TP-Link Kasa EC70 and Kasa EC71 (unknown version) and classified as very critical. This vulnerability affects an unknown code block of the component Debug Interface/Bootloader. The manipulation with an unknown input leads to a privileges management vulnerability. The CWE definition for the vulnerability is CWE-269. The product does not properly assign, modify, track, or check privileges for an actor, creating an unintended sphere of control for that actor. As an impact it is known to affect confidentiality, integrity, and availability. CVE summarizes:

Kasa EC70 v4 and EC71 v4 do not logically disable the production debug interface at the firmware or chip level and do not lock the bootloader.  Although the debug traces are physically severed during manufacturing, an attacker with physical access can restore the connection, interrupt the boot process, and manipulate boot parameters to enter a non-standard initialization path that exposes an unauthenticated root shell during startup. Successful exploitation may allow an attacker with physical access to obtain root-level command access during device startup, resulting in loss of confidentiality, integrity, and availability for the affected device. Exploitation requires device disassembly, restoration of the severed debug connection, and manipulation of the boot process.

The advisory is shared for download at tp-link.com. This vulnerability was named CVE-2026-102370 since 09/29/2026. The exploitation appears to be easy. The attack needs to be approached locally. There are neither technical details nor an exploit publicly available. The current price for an exploit might be approx. USD $0-$5k (estimation calculated on 10/01/2026). The MITRE ATT&CK project declares the attack technique as T1068.

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

VulDB is the best source for vulnerability data and more expert information about this specific topic.

Productinfo

Vendor

• TP-Link

Name

• Kasa EC70
• Kasa EC71

License

• commercial

Website

• Vendor: https://www.tp-link.com/

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