CVE-2025-70994 — HIGH (7.3)

Vulnerability 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.

CVSS Score

7.3

HIGH

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

Attack Vector

ADJACENT_NETWORK

Attack Complexity

LOW

Privileges Required

NONE

User Interaction

REQUIRED

Scope

UNCHANGED

Confidentiality

NONE

Integrity

HIGH

Availability

HIGH

Related Weaknesses (CWE)

CWE-1390

References

FAQ

What is CVE-2025-70994?

CVE-2025-70994 is a vulnerability with a CVSS score of 7.3 (HIGH). 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 impleme...

How severe is CVE-2025-70994?

CVE-2025-70994 has been rated HIGH with a CVSS base score of 7.3/10. Review the CVSS metrics above for detailed severity breakdown.

Is there a patch for CVE-2025-70994?

Check the references section above for vendor advisories and patch information. Review vendor security bulletins for remediation guidance.