CVE-2025-70994
HIGHDescription
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.
How to fix
No published remediation has been found for this vulnerability's affected products yet.
Mitigation guidance may be in the linked vendor advisories in the References section below.
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CVSS v3 Vector
Exploitability
Impact
CVSS:3.1/AV:A/AC:L/PR:N/UI:R/S:U/C:N/I:H/A:H
Exploit Intelligence
Low risk: more likely to be exploited than 19% of all known CVEs.
References
Related Vulnerabilities
Other CWE-1390 vulnerabilities, ordered by exploit likelihood. View all
| CVE | Severity | CVSS | EPSS | Exploited | Fix |
|---|---|---|---|---|---|
| CVE-2025-40554 | Critical | 9.8 | 58% | - | Fix |
| CVE-2025-40552 | Critical | 9.8 | 50% | - | Fix |
| CVE-2026-55040 | Critical | 9.1 | 40% | KEV | Fix |
| CVE-2025-27740 | High | 8.8 | 3.3% | - | Fix |
| CVE-2024-49019 | High | 7.8 | 2.0% | - | Fix |
| CVE-2024-38239 | High | 7.2 | 1.7% | - | Fix |
Common questions
How do I fix CVE-2025-70994?
No published fix for CVE-2025-70994 has been found yet. Check the linked vendor advisories for guidance as it becomes available.
Is CVE-2025-70994 being actively exploited?
Not that we know of. CVE-2025-70994 is not in the CISA Known Exploited Vulnerabilities catalog. Its EPSS score of 0.27% is the estimated probability that it will be exploited in the next 30 days. That is higher than 19% of all scored CVEs.
How severe is CVE-2025-70994?
CVE-2025-70994 has a CVSS v3 base score of 7.3, rated high. CVSS rates the technical impact if the vulnerability is exploited, not how likely that is, so weigh it alongside the exploit-prediction score when you decide what to patch first.
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This product uses NVD data but is not endorsed or certified by the NVD. EPSS scores courtesy of FIRST.org (https://www.first.org/epss). Source: CISA KEV Catalog. Data as of 2026-04-24.