Unauthorized vehicle operation via forged fixed-code RF commands
Published Apr 23, 2026 · Updated Apr 23, 2026
Authentication bypass in Yadea T5 electric bicycles manufactured in 2024 or later allows physically proximate attackers to start the vehicle. The receiver authenticates each 24-bit EV1527 frame solely by its static 20-bit address, so a captured address can be paired with a Start command and rebroadcast. Exploitation requires proximity and interception of one legitimate transmission; accepted forged commands unlock or start the bicycle without a key fob.
Summary
What happened
Authentication bypass in Yadea T5 electric bicycles manufactured in 2024 or later allows physically proximate attackers to start the vehicle. The receiver authenticates each 24-bit EV1527 frame solely by its static 20-bit address, so a captured address can be paired with a Start command and rebroadcast. Exploitation requires proximity and interception of one legitimate transmission; accepted forged commands unlock or start the bicycle without a key fob.
The record
- CVE
- CVE-2025-70994
- Published
- Apr 23, 2026
- Updated
- Apr 23, 2026
- Vendor
- Unknown vendor
- Product
- Unknown product
- Classifications
- CWE-1390, T1692.001
- Attack vector
- adjacent
- Privileges
- unauthenticated
Timeline
How it unfolded
- Apr 23, 2026CVE publishedPublication date reported by the CVE source.
- Apr 23, 2026Record updatedLatest update available in the CVE record.
Exploitability
Present is not the same as exploitable
Compare your product and version with the public record. A matching version still requires validation against your environment.
Is a vulnerable build present?
What conditions does exploitation require?
What is affected?
Affected products and versions are unavailable in this record.
Published CVSS scores
CVSS describes severity. EPSS estimates exploitation probability.
Attacks
What attackers are doing with it
Daily unique IPs observed by Shadowserver honeypots for known exploited vulnerabilities (KEVs). Missing observations do not establish an absence of attacks.
Weakness, pattern, technique
Public exploit references
- ESP8266 and CC1101 passive signal analyzerproof of concept · demonstrated
Labels summarize the accepted research assessment. They do not indicate a test against your environment.
Technologies
Your stack
See the directory against your own environment.
Your stack
Check the software in your environment
Book a demo to see how Hinoki identifies affected software and validates exploitability in your environment.
Book a demo