Hardcoded Shared RSA-1024 Private Key in Web Login in TP-Link RE305 and Archer C7
Impact
A hard-coded cryptographic key vulnerability exists in TP-Link RE305 V3 and Archer C7 V5. The same RSA-1024 private key is stored within firmware configuration files and reused across devices. An attacker who obtains the private key and captures an HTTP Web UI login session may use the key to decrypt the administrator password.
Source excerpt · TPLinkAffected packages
Affected products
Vendor version evidence. Product records are separate from automatic dependency matching.
TP-Link Systems Inc. · RE305 v3
Other versions: unaffected
| Version / range | Source status |
|---|---|
| 0 to before 1.1.8 Build 20260921 Rel. 42853 | affected |
TP-Link Systems Inc. · Archer C7 v5
Other versions: unaffected
| Version / range | Source status |
|---|---|
| 0 to before 1.3.1 Build 20260821 Rel. 41256 | affected |
Original source description
A hard-coded cryptographic key vulnerability exists in TP-Link RE305 V3 and Archer C7 V5. The same RSA-1024 private key is stored within firmware configuration files and reused across devices. An attacker who obtains the private key and captures an HTTP Web UI login session may use the key to decrypt the administrator password.
Successful exploitation may disclose the administrator password captured from an HTTP login session and compromise session confidentiality.
References
- Source reference www.tp-link.com/us/support/download/re305/v3/
- Source reference www.tp-link.com/en/support/download/re305/v3/
- Source reference www.tp-link.com/en/support/download/archer-c7/v5/
- Source reference www.tp-link.com/us/support/download/archer-c7/v5/
- Source reference www.tp-link.com/us/support/faq/5362/