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HIGHCVE-2026-2540Published Modified CNA ASRG

CVE-2026-2540: Micca KE700 Acceptance of previously used rolling codes

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.

Metrics

CVSS v4.0
8.4
Severity
HIGH
Fixed in
Affected Products
1
Affected packages
  • Micca Auto Electronics Co., Ltd. / Car Alarm System KE700
    KE700
CVSS Vector
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
References