CVE-2026-9770

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

Is your site exposed to CVE-2026-9770?

Run a free security scan — no signup, results in seconds.

Weakness Type (CWE)

CWE-321 CWE-321

References

Other References

https://www.tp-link.com/en/support/download/ec70/v4/#Firmware-Release-Notes https://www.tp-link.com/en/support/download/ec71/v4/#Firmware-Release-Notes https://www.tp-link.com/us/support/download/ec70/v4/#Firmware-Release-Notes https://www.tp-link.com/us/support/download/ec71/v4/#Firmware-Release-Notes https://www.tp-link.com/us/support/faq/5192/

Frequently Asked Questions

What is CVE-2026-9770? +

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

How do I check if I'm vulnerable to CVE-2026-9770? +

You can use Secably's free Website Scanner to check your website for known vulnerabilities. For infrastructure scanning, use the Port Scanner to identify exposed services that may be affected. Check the vendor advisories linked above for specific patch and version information.

Related Vulnerabilities

CVE-2026-57172

DataEase is an open source data visualization and analysis tool. Prior to 2.10.24, ShareSecretManage uses a hardcoded default share link …

CVE-2026-42518

This vulnerability exists in e-Sushrut due to disclosure of sensitive information and hardcoded AES encryption keys in client-side JavaScript. An …

CVE-2026-45041

RustFS is a distributed object storage system built in Rust. Prior to 1.0.0-beta.2, crates/appauth/src/token.rs ships a 2048-bit RSA private key …

CVE-2025-34500

Deck Mate 2's firmware update mechanism accepts packages without cryptographic signature verification, encrypts them with a single hard-coded AES key …

CVE-2026-46395

HAX CMS helps manage microsite universe with PHP or NodeJs backends. Prior to version 26.0.0, the `hmacBase64()` function in the …

CVE-2026-11347

The linqi application contains hardcoded cryptographic keys. Additionally, the application uses a weak algorithm with a limited ASCII charset to …