CVE-2026-2540
HIGHMicca Car Alarm System KE700 - Authentication Bypass via Replay Attack
Title source: llmDescription
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.
References (1)
Core 1
Core References
Various Sources third-party-advisory
https://asrg.io/security-advisories/cve-2026-2540/
Scores
CVSS v4
8.4
EPSS
0.0021
EPSS Percentile
10.9%
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
CISA SSVC
Vulnrichment
Exploitation
none
Automatable
no
Technical Impact
partial
Details
CWE
CWE-288
CWE-294
Status
published
Products (2)
Micca Auto Electronics Co., Ltd./Car Alarm System KE700
KE700
Micca Auto Electronics Co., Ltd./Car Alarm System KE700
KE700+
Published
Feb 15, 2026
Tracked Since
Feb 18, 2026