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.
History

Thu, 23 Apr 2026 18:15:00 +0000

Type Values Removed Values Added
Weaknesses CWE-1390
Metrics cvssV3_1

{'score': 7.3, 'vector': 'CVSS:3.1/AV:A/AC:L/PR:N/UI:R/S:U/C:N/I:H/A:H'}

ssvc

{'options': {'Automatable': 'no', 'Exploitation': 'poc', 'Technical Impact': 'total'}, 'version': '2.0.3'}


Thu, 23 Apr 2026 15:00:00 +0000

Type Values Removed Values Added
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.
References

cve-icon MITRE

Status: PUBLISHED

Assigner: mitre

Published:

Updated: 2026-04-23T15:10:43.811Z

Reserved: 2026-01-09T00:00:00.000Z

Link: CVE-2025-70994

cve-icon Vulnrichment

Updated: 2026-04-23T15:01:03.820Z

cve-icon NVD

Status : Received

Published: 2026-04-23T15:36:26.687

Modified: 2026-04-23T18:16:23.103

Link: CVE-2025-70994

cve-icon Redhat

No data.

cve-icon OpenCVE Enrichment

No data.