CVE-2025-70994

Published: Apr 23, 2026Modified: Jun 17, 2026

7.3

Vector

CVSS:3.1/AV:A/AC:L/PR:N/UI:R/S:U/C:N/I:H/A:H

Exploitability: 2.1 / Impact: 5.2

Source: 134c704f-9b21-4f2e-91b3-4a467353bcc0 (Secondary)

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.

Related CWEs

CWE-1390

Weak Authentication

The product uses an authentication mechanism to restrict access to specific users or identities, but the mechanism does not sufficiently prove that the claimed identity is correct.

References (3)

https://github.com/ktauchathuranga/CVE-2025-70994

Source: cve@mitre.org

https://github.com/ktauchathuranga/ghost-keys

Source: cve@mitre.org

https://github.com/ktauchathuranga/CVE-2025-70994

Source: 134c704f-9b21-4f2e-91b3-4a467353bcc0

Timeline

No history available yet.