CVE-2026-2540 HIGH

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

Vendor Micca Auto Electronics Co., Ltd.
Product Car Alarm System KE700
Weakness CWE-288
Published February 15, 2026
Last update February 17, 2026

CVSS base score

8.4/10
Attack vector Adjacent
Attack complexity Low
Privileges required None
User interaction None
Confidentiality
Integrity

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

What the vulnerability does

01Description

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.

Key dates

02Disclosure timeline

February 15, 2026 CVE published
February 17, 2026 Record updated