CVE-2026-102812
Hardcoded AES-128 Key and Fixed IV in Configuration Backup Encryption in TP-Link RE305 and Archer C7
CVSS Score
0.0
EPSS Score
0.0%
EPSS Percentile
0th
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.
| CWE | CWE-321 |
| Vendor | tp-link systems inc. |
| Product | re305 v3 |
| Published | Oct 27, 2026 |
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Affected Versions
TP-Link Systems Inc. / RE305 v3
0 < 1.1.8 Build 20260921 Rel. 42853
TP-Link Systems Inc. / Archer C7 v5
0 < 1.3.1 Build 20260821 Rel. 41256
References
tp-link.com: https://www.tp-link.com/us/support/download/re305/v3/#Firmware tp-link.com: https://www.tp-link.com/en/support/download/re305/v3/#Firmware tp-link.com: https://www.tp-link.com/en/support/download/archer-c7/v5/#Firmware tp-link.com: https://www.tp-link.com/us/support/download/archer-c7/v5/#Firmware tp-link.com: https://www.tp-link.com/us/support/faq/5362/
Credits
Victor Mota