CVE-2025-70994

Published April 23rd, 2026

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CVSS v3

7.3

HIGH

CVSS v2

N/A

Affected

PROJECT

Description

Yadea T5 Electric Bicycles (models manufactured in/after 2024) have a weak authentication mechanism in their keyless entry system. The system utilizes the EV1527 fixed-code RF protocol without implementing rolling codes or cryptographic challenge-response mechanisms. This is vulnerable to signal forgery after a local attacker intercepts any legitimate key fob transmission, allowing for complete unauthorized vehicle operation via a replay attack.

ktauchathuranga/CVE-2025-70994

Security Advisory & PoC for CVE-2025-70994 (Yadea T5 CWE-1390). Details on EV1527 RF replay vulnerabilities, coordinated with CISA.

GitHub