Replay Attack Vulnerability in Micca KE700 System by Micca

CVE-2026-2540

What is CVE-2026-2540?

The Micca KE700 system is susceptible to a significant security flaw involving its resynchronization logic, which can be exploited through replay attacks. An attacker can capture and resend previously used rolling codes in a precise order, allowing them to mislead the system into accepting these stale codes. This vulnerability enables unauthorized control over the vehicle's locking mechanism, potentially granting access to malicious actors, who could clone the alarm key and unlock or lock the doors of the vehicle without consent. Awareness and prompt remediation are crucial for users of the Micca KE700 system.

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