VULNERABILITY INTELLIGENCE
CVE-2025-70994
CVSS score7.3 HIGH
EPSS probability0.27%
CISA KEVNot currently listed
Published2026-04-23
Last modified2026-06-17
CVSS vectorCVSS:3.1/AV:A/AC:L/PR:N/UI:R/S:U/C:N/I:H/A:H
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.
Weakness classification
- 134c704f-9b21-4f2e-91b3-4a467353bcc0: CWE-1390