CVE-2025-70994

Published Apr 23, 2026

Last updated 6 hours ago

Overview

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.
Source
cve@mitre.org
NVD status
Received

Risk scores

CVSS 3.1

Type
Secondary
Base score
7.3
Impact score
5.2
Exploitability score
2.1
Vector string
CVSS:3.1/AV:A/AC:L/PR:N/UI:R/S:U/C:N/I:H/A:H
Severity
HIGH

Weaknesses

134c704f-9b21-4f2e-91b3-4a467353bcc0
CWE-1390

Social media

Hype score
Not currently trending