CVE-2025-70994
High
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.
SeverityHigh
CVSS7.3
Exploit probability—
ProductT5 Electric Bicycles
PublishedApr 23, 2026
First seenApr 23, 2026
Weakness typeCWE-1390CWE-1390
How to fix
Sources list no fixed version or patch link for this vulnerability.
Affected products
| Product | Affected versions | Fixed in |
|---|---|---|
| Yadea T5 Electric Bicycles | 2024 ≤ v | — |
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