CVE-2026-2540highCWE-288CWE-294

CVE-2026-2540: high-severity vulnerability in Micca Auto Electronics Co., Ltd.

Micca KE700 Acceptance of previously used rolling codes

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21Vexday Risk Score

No sign of exploitation. No public exploitation artifact known so far.

ssvc Trackcvss 8.4epss 0.2%
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.
CVSS:4.0/AV:A/AC:L/AT:N/PR:N/UI:N/VC:L/VI:H/VA:N/SC:L/SI:L/SA:H/V:D/RE:M
Affected products
Micca Auto Electronics Co., Ltd. · Car Alarm System KE700
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