CVE-2026-49319
Description
Remote Keyless Entry System (RKES), using the 433 MHz key fob bearing FCC ID CWTR53R0 manufactured by ALPS ALPINE CO., LTD., is vulnerable to a roll-back attack against its rolling-code authentication.
An attacker within RF range who records two consecutive lock or unlock transmissions from a legitimate key fob can later replay the same pair of transmissions repeatedly. During testing, replaying the first captured transmission caused the RKES to enter a state in which replaying the second captured transmission resulted in a successful lock or unlock operation of the vehicle. Tested and confirmed on a 2024 Suzuki Swift (SWIFT ISG GLS AC 1.2 5P 4x2 TM).
Summary dbcve.org
The ALPS ALPINE key fob (FCC ID CWTR53R0) implementing the 433 MHz Remote Keyless Entry System has a rollback vulnerability in its rolling-code authentication mechanism. An attacker within RF range can record two consecutive lock/unlock transmissions from a legitimate key fob and replay them in sequence to successfully operate the vehicle, as the system enters a receptive state after the first replay.
Mitigation
The vendor should issue a firmware update for the key fob and/or vehicle RKES to implement cryptographically secure, time-synchronized rolling codes with replay attack prevention. Users should contact ALPS ALPINE and Suzuki for available patches or key fob replacements.