Vulnerability 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
CVSS Score
MEDIUM
Affected Products
| Vendor | Product | Versions |
|---|---|---|
| Tp-Link | Kasa Ec71 Firmware | < 2.4.0 |
| Tp-Link | Kasa Ec71 | 4.0 |
| Tp-Link | Kasa Ec70 Firmware | < 2.4.0 |
| Tp-Link | Kasa Ec70 | 4.0 |
Related Weaknesses (CWE)
References
- https://www.tp-link.com/en/support/download/ec70/v4/#Firmware-Release-NotesRelease Notes
- https://www.tp-link.com/en/support/download/ec71/v4/#Firmware-Release-NotesRelease Notes
- https://www.tp-link.com/us/support/download/ec70/v4/#Firmware-Release-NotesRelease Notes
- https://www.tp-link.com/us/support/download/ec71/v4/#Firmware-Release-NotesRelease Notes
- https://www.tp-link.com/us/support/faq/5192/Vendor Advisory
FAQ
What is CVE-2026-9770?
CVE-2026-9770 is a vulnerability with a CVSS score of 5.3 (MEDIUM). 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...
How severe is CVE-2026-9770?
CVE-2026-9770 has been rated MEDIUM with a CVSS base score of 5.3/10. Review the CVSS metrics above for detailed severity breakdown.
Is there a patch for CVE-2026-9770?
Check the references section above for vendor advisories and patch information. Affected products include: Tp-Link Kasa Ec71 Firmware, Tp-Link Kasa Ec71, Tp-Link Kasa Ec70 Firmware, Tp-Link Kasa Ec70.