CVE-2026-9770
Hardcoded Cryptographic Key Information Disclosure Vulnerability on TP-Link Kasa EC70 and EC71
- State
- Published
- Severity
- 8.6 High
- Published
- Jul 15, 2026
- Updated
- Jul 15, 2026
- Reserved
- May 27, 2026
Description
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
Scores
| CVSS | Score | Vector | Source |
|---|---|---|---|
| 4.0 | 8.6 High | CVSS:4.0/AV:A/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:N/SC:N/SI:N/SA:N | TPLink |
Weaknesses
- CWE-321 Use of hard-coded cryptographic key
Affected Products
| Product | Versions |
|---|---|
Kasa EC71 v4TP-Link Systems Inc. |
|
Kasa EC70 v4TP-Link Systems Inc. |
|
References
- https://www.tp-link.com/en/support/download/ec71/v4/#Firmware-Release-Notespatch
- https://www.tp-link.com/us/support/download/ec71/v4/#Firmware-Release-Notespatch
- https://www.tp-link.com/us/support/download/ec70/v4/#Firmware-Release-Notespatch
- https://www.tp-link.com/en/support/download/ec70/v4/#Firmware-Release-Notespatch
- https://www.tp-link.com/us/support/faq/5192/vendor-advisory
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