GHSA-4cpv-8qgx-f9fv · Severity: high — Yadea T5 Electric Bicycles (models manufactured in/after 2024) have a weak authentication...
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.
Conclusion & alert: CVE-2025-70994 is rated Low Risk (34.4/100): CVSS High severity, with low exploitation likelihood (EPSS 0.05%). Mandatory action: Monitor for updates and reassess as exploit intelligence or EPSS changes.
Risk is dynamic; we continuously reassess and refresh what is shown on this page as upstream context changes.
EPSS lead: Daily EPSS estimates relative likelihood of exploitation; percentile ranks this CVE among scored vulnerabilities (higher = more severe relative rank).
| # | Date | Old EPSS score | New EPSS score | Delta (New - Old) |
|---|---|---|---|---|
| 1 | 2026-05-25 | 0.05% | 0.05% | -0.00% |
| 2 | 2026-05-18 | 0.03% | 0.05% | +0.02% |
| 3 | 2026-04-24 | — | 0.03% | — |
Full EPSS history (3 records total)
CVSS metrics for this CVE.
| Base score | Version | Severity | Vector | Exploitability | Impact | Score source |
|---|---|---|---|---|---|---|
| 7.3 | 3.1 | HIGH |
|
2.1 | 5.2 | 134c704f-9b21-4f2e-91b3-4a467353bcc0 |
GHSA-4cpv-8qgx-f9fv · Severity: high — Yadea T5 Electric Bicycles (models manufactured in/after 2024) have a weak authentication...
| Vendor | Product | Version | Raw CPE |
|---|---|---|---|
| No affected products in dataset. | |||