CVE-2026-49319: CWE-294 Authentication Bypass by Capture-replay in Alps Electric Co., Ltd. Remote Keyless Entry System (RKES) R53R0
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).
AI Analysis
Technical Summary
CVE-2026-49319 describes a vulnerability in the Alps Electric Co., Ltd. Remote Keyless Entry System (RKES) R53R0, specifically targeting its rolling-code authentication mechanism. The system uses a 433 MHz key fob (FCC ID CWTR53R0). An attacker can capture two consecutive transmissions (lock/unlock commands) from a legitimate key fob and replay them later to bypass authentication and control vehicle locking functions. Testing confirmed the exploit on a 2024 Suzuki Swift model. The vulnerability is classified under CWE-294 (Authentication Bypass) and has a CVSS v3.1 base score of 6.5, indicating medium severity. No patch or official remediation guidance is currently available.
Potential Impact
Successful exploitation allows an attacker within RF range to bypass the authentication of the remote keyless entry system, enabling unauthorized locking or unlocking of the vehicle. This compromises vehicle security and potentially physical access, but does not impact confidentiality or availability of the system.
Mitigation Recommendations
Patch status is not yet confirmed — check the vendor advisory for current remediation guidance. Until a fix is available, users should be aware of the risk of replay attacks and consider physical security measures to mitigate unauthorized access. No official vendor mitigation or temporary fix has been published.
CVE-2026-49319: CWE-294 Authentication Bypass by Capture-replay in Alps Electric Co., Ltd. Remote Keyless Entry System (RKES) R53R0
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).
CVSS v3.1
Score 6.5medium
Weaknesses
AI-Powered Analysis
Machine-generated threat intelligence
Technical Analysis
CVE-2026-49319 describes a vulnerability in the Alps Electric Co., Ltd. Remote Keyless Entry System (RKES) R53R0, specifically targeting its rolling-code authentication mechanism. The system uses a 433 MHz key fob (FCC ID CWTR53R0). An attacker can capture two consecutive transmissions (lock/unlock commands) from a legitimate key fob and replay them later to bypass authentication and control vehicle locking functions. Testing confirmed the exploit on a 2024 Suzuki Swift model. The vulnerability is classified under CWE-294 (Authentication Bypass) and has a CVSS v3.1 base score of 6.5, indicating medium severity. No patch or official remediation guidance is currently available.
Potential Impact
Successful exploitation allows an attacker within RF range to bypass the authentication of the remote keyless entry system, enabling unauthorized locking or unlocking of the vehicle. This compromises vehicle security and potentially physical access, but does not impact confidentiality or availability of the system.
Mitigation Recommendations
Patch status is not yet confirmed — check the vendor advisory for current remediation guidance. Until a fix is available, users should be aware of the risk of replay attacks and consider physical security measures to mitigate unauthorized access. No official vendor mitigation or temporary fix has been published.
Technical Details
- Data Version
- 5.2
- Assigner Short Name
- ASRG
- Date Reserved
- 2026-05-29T07:26:43.198Z
- Cvss Version
- 3.1
- State
- PUBLISHED
- Remediation Level
- null
Threat ID: 6a3d3f304853345fc113d179
Added to database: 06/25/2026, 14:46:08 UTC
Last enriched: 07/02/2026, 22:42:45 UTC
Last updated: 08/09/2026, 00:41:15 UTC
Views: 78
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