TP-Link Tapo C120/Tapo C200 MacTool handler authentication replay

Summaryinfo

A vulnerability categorized as critical has been discovered in TP-Link Tapo C120 and Tapo C200. This vulnerability affects unknown code of the component MacTool handler. Executing a manipulation can lead to authentication replay. This vulnerability is handled as CVE-2026-102369. The attack can be executed remotely. There is not any exploit available.

Detailsinfo

A vulnerability was found in TP-Link Tapo C120 and Tapo C200 (affected version unknown). It has been declared as critical. This vulnerability affects an unknown functionality of the component MacTool handler. The manipulation with an unknown input leads to a authentication replay vulnerability. The CWE definition for the vulnerability is CWE-294. A capture-replay flaw exists when the design of the product makes it possible for a malicious user to sniff network traffic and bypass authentication by replaying it to the server in question to the same effect as the original message (or with minor changes). As an impact it is known to affect confidentiality, integrity, and availability. CVE summarizes:

Tapo C120 v1 and C200 V5 do not adequately protect login challenge data or sanitize attacker-controlled input processed by the MacTool handler. An unauthenticated attacker on the same local network can replay login challenge data to obtain an administrative session, enable a privileged service that becomes accessible after a reboot, and submit crafted input to execute arbitrary commands within the device management process. Successful exploitation may allow arbitrary command execution on the camera and compromise the confidentiality, integrity, and availability of the affected device. Exploitation requires access from the same local network, replay of the login challenge data, activation of the privileged service, and a device reboot.

The advisory is shared for download at tp-link.com. This vulnerability was named CVE-2026-102369 since 09/29/2026. The exploitation appears to be easy. The attack can be initiated remotely. No form of authentication is required for a successful exploitation. 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 T1040.

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

Once again VulDB remains the best source for vulnerability data.

Productinfo

Vendor

• TP-Link

Name

• Tapo C120
• Tapo C200

License

• commercial

Website

• Vendor: https://www.tp-link.com/

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