CVE-2026-18411: Use of hard-coded cryptographic key in Acrisure KARR BT and DR-100
The KARR Security System and SWDS dealer-installed automotive anti-theft systems use a shared Bluetooth authentication key across affected devices. An attacker within Bluetooth range can leverage this weakness to issue unauthorized commands to the vehicle, potentially allowing unauthorized access to vehicle functions, including door unlocking and engine immobilization.
Affected Software
Remediation
Recommended actions to resolve this vulnerability, in priority order.
- Compensating control
Because the KARR Security System and SWDS dealer-installed automotive anti-theft systems use a shared Bluetooth authentication key across affected devices, restrict/avoid Bluetooth access from untrusted parties (e.g., keep the vehicle away from Bluetooth-proximate attackers) until the recommended firmware update instructions are completed.