Kasa EC71 v4 and EC70 v4 firmware contains a static cryptographic private key stored in a read-only filesystem
that is shared across devices. An
attacker with access to the firmware image can extract the embedded key. Successful
exploitation may allow an unauthenticated attacker on the same network to use
this key in the web management service, compromising the confidentiality of
encrypted communications.
This may enable passive decryption of traffic or
active man-in-the-middle (MITM) attacks
Attack Parameters
Attack Vector
Adjacent
Requires local network access
Attack Complexity
Low
Easy to exploit
Attack Requirements
None
No additional conditions
Privileges Required
None
No privileges needed
User Interaction
None
No user interaction needed
Impact Assessment
Confidentiality
High
Complete data leak
Integrity
High
Complete data modification
Availability
None
No disruption
CVSS Vector v4.0
Weakness Type (CWE)
Vulnerable Products 4
| Configuration | From (including) | Up to (excluding) |
|---|---|---|
|
Tp-Link Kasa_Ec71_Firmware
cpe:2.3:o:tp-link:kasa_ec71_firmware:*:*:*:*:*:*:*:*
|
— |
2.4.0
|
|
Tp-Link Kasa_Ec71
cpe:2.3:h:tp-link:kasa_ec71:4.0:*:*:*:*:*:*:*
|
— | — |
|
Tp-Link Kasa_Ec70_Firmware
cpe:2.3:o:tp-link:kasa_ec70_firmware:*:*:*:*:*:*:*:*
|
— |
2.4.0
|
|
Tp-Link Kasa_Ec70
cpe:2.3:h:tp-link:kasa_ec70:4.0:*:*:*:*:*:*:*
|
— | — |
References 5
https://www.tp-link.com/en/support/download/ec70/v4/#Firmware-Release-Notes
f23511db-6c3e-4e32-a477-6aa17d310630
https://www.tp-link.com/en/support/download/ec71/v4/#Firmware-Release-Notes
f23511db-6c3e-4e32-a477-6aa17d310630
https://www.tp-link.com/us/support/download/ec70/v4/#Firmware-Release-Notes
f23511db-6c3e-4e32-a477-6aa17d310630
https://www.tp-link.com/us/support/download/ec71/v4/#Firmware-Release-Notes
f23511db-6c3e-4e32-a477-6aa17d310630
https://www.tp-link.com/us/support/faq/5192/
f23511db-6c3e-4e32-a477-6aa17d310630