What’s Vulnerable › Vulnerabilities

CVE-2026-49319: Alps Electric Co., Ltd. R53R0 Remote Keyless Entry System (RKES) Replay Attack

• Severity: medium (CVSS 6.5 v3.1)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 0.3% probability of exploitation in the next 30 days
• Public exploit or detection template: none known
• Published: 2026-06-25 · updated 2026-10-25
• Weakness: CWE-294

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).

Affected products

• Alps Electric Co., Ltd. Remote Keyless Entry System (RKES) R53R0: R53R0

References

• https://fccid.io/CWTR53R0
• https://www.asrg.io/security-advisories/cve-2026-49319-suzuki-swift-2024-rkes-rollback-replay

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