CVE-2025-70994
HIGH 1 PoC
MEDIUM
Priority: 0.02
BB Relevance:
60/100
Published: 2026-04-23
Modified: 2026-11-04
First seen: 2026-11-04
Status: active
Attack Surface
Adjacent
Low Complexity
No Auth
Integ. Impact
CVSS Vector Breakdown
AV:
Adjacent
AC:
Low
PR:
None
UI:
Required
S:
Unchanged
C:
None
I:
High
A:
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.