CVE-2026-2540
High
Description
The Micca KE700 system contains flawed resynchronization logic and is vulnerable to replay attacks. This attack requires sending two previously captured codes in a specific sequence. As a result, the system can be forced to accept previously used (stale) rolling codes and execute a command. Successful exploitation allows an attacker to clone the alarm key. This grants the attacker unauthorized access to the vehicle to unlock or lock the doors.
SeverityHigh
CVSS8.4
Exploit probability—
ProductCar Alarm System KE700
PublishedFeb 15, 2026
First seenFeb 15, 2026
Weakness typeCWE-288CWE-288CWE-294CWE-294
How to fix
Sources list no fixed version or patch link for this vulnerability.
Affected products
| Product | Affected versions | Fixed in |
|---|---|---|
| Micca Auto Electronics Co., Ltd. Car Alarm System KE700 | KE700 | — |
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