TP-Link RE305/Archer C7 Configuration Management hard-coded credentials

Summaryinfo

A vulnerability labeled as problematic has been found in TP-Link RE305 and Archer C7. This affects an unknown part of the component Configuration Management. Executing a manipulation can lead to hard-coded credentials. This vulnerability appears as CVE-2026-102812. The attack may be performed from remote. There is no available exploit.

Detailsinfo

A vulnerability classified as problematic was found in TP-Link RE305 and Archer C7 (the affected version unknown). This vulnerability affects an unknown part of the component Configuration Management. The manipulation with an unknown input leads to a hard-coded credentials vulnerability. The CWE definition for the vulnerability is CWE-798. The product contains hard-coded credentials, such as a password or cryptographic key, which it uses for its own inbound authentication, outbound communication to external components, or encryption of internal data. As an impact it is known to affect confidentiality, integrity, and availability. CVE summarizes:

A hard-coded cryptographic key vulnerability exists in the user-configuration backup mechanism of TP-Link RE305 V3 and Archer C7 V5. A fixed AES-128 key and initialization vector are embedded in the firmware configuration-management component. An attacker who obtains an affected configuration backup file may extract the cryptographic material from the firmware and use it to decrypt the backup.  Successful exploitation may disclose sensitive configuration information contained in a backup file, including administrator passwords and Wi-Fi credentials.

The advisory is shared for download at tp-link.com. This vulnerability was named CVE-2026-102812 since 09/29/2026. The exploitation appears to be easy. The attack can be initiated remotely. Additional levels of successful authentication are necessary for exploitation. There are neither technical details nor an exploit publicly available. The MITRE ATT&CK project declares the attack technique as T1110.001.

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 C7
• RE305

License

• commercial

Website

• Vendor: https://www.tp-link.com/

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