CVE-2026-2540 Micca KE700 Acceptance of previously used rolling codes
Attackers can replay captured rolling codes to bypass authentication and clone alarm keys, gaining unauthorized vehicle access.
- Exploited in the wild
- Not known
- Login needed
- Not needed
- Attackable
- Local or same network only
- Victim action needed
- Not needed
- Fix
- None listed
What is CVE-2026-2540?
CVE-2026-2540 is a high-severity vulnerability in Micca Auto Electronics Co., Ltd. Car Alarm System KE700, published on 15 Feb 2026. It can only be exploited from the same machine or local network, with no action from the victim.
Official description
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.
Which versions are affected by CVE-2026-2540?
How do I fix CVE-2026-2540?
No fix has been published for CVE-2026-2540 yet. Limit exposure of the affected software until one is available.
Is CVE-2026-2540 being exploited?
There is no known exploitation of CVE-2026-2540 in the wild and no public exploit code.
Sources
Also known as GHSA-822c-h5gx-7pw7.