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Vulnerability record · CVE-2025-70994 · published 23 April 2026

CVE-2025-70994: Yadea T5 Electric Bicycles (models manufactured in/after 2024) have a weak authentication mechanism in their k…

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.

7.3 CVSS 3.1 High EPSS 0.27% · top 82.1% CWE-1390 · CWE-1390 Awaiting Analysis
7.3CVSS 3.1 base score
0.27%EPSS exploitation probability, 30 days
NoNot in CISA KEV
0Affected product versions listed by NVD
3References
17 Jun 2026Last modified by NVD

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

References

LinkTags
https://github.com/ktauchathuranga/CVE-2025-70994
https://github.com/ktauchathuranga/ghost-keys
https://github.com/ktauchathuranga/CVE-2025-70994

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Source: NIST National Vulnerability Database (record CVE-2025-70994), CISA KEV, FIRST EPSS (scores of 2026-09-26). This page is refreshed as NVD updates the record.