CVE-2026-102812

Description

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.

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Weakness Type (CWE)

CWE-321 CWE-321

References

Other References

https://www.tp-link.com/en/support/download/archer-c7/v5/#Firmware https://www.tp-link.com/en/support/download/re305/v3/#Firmware https://www.tp-link.com/us/support/download/archer-c7/v5/#Firmware https://www.tp-link.com/us/support/download/re305/v3/#Firmware https://www.tp-link.com/us/support/faq/5362/

Frequently Asked Questions

What is CVE-2026-102812? +

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.

How do I check if I'm vulnerable to CVE-2026-102812? +

You can use Secably's free Website Scanner to check your website for known vulnerabilities. For infrastructure scanning, use the Port Scanner to identify exposed services that may be affected. Check the vendor advisories linked above for specific patch and version information.

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