TP-Link Kasa EC70/EC71 Firmware Security Flaws

Use of a hard-coded, device-shared cryptographic private key in TP-Link Kasa EC71 v4 and EC70 v4 camera firmware lets an adjacent-network attacker impersonate the device's web management service and break its transport encryption. Because the same private key is baked into every unit's read-only filesystem, anyone who extracts it from one firmware image can passively decrypt or actively man-in-the-middle traffic to any other device on the local network without authentication. TP-Link (the reporting vendor) has released fixed firmware; there is no public exploit identified at time of analysis and the CVE is not in CISA KEV.

Unauthenticated information disclosure in TP-Link Kasa EC70 v4 and EC71 v4 exposes sensitive geolocation data to any attacker on the same local network segment. The flaw resides in the devices' local discovery mechanism, which returns geolocation-related information in response to crafted network probes without requiring any credentials. Impact is limited to confidentiality; no integrity or availability compromise is possible through this vector. No public exploit exists and no active exploitation has been confirmed.