Vulnerability in Alps Electric Co., Ltd. Remote Keyless Entry System (Rkes) R53r0
CVE-2026-49319
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).
Published · last modified .
CVSS v3 metric
CVSS v3 base score 6.5 (Medium). Vector: CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N.
EPSS exploit prediction
EPSS: 0.003 (20.3th percentile), scored .
Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 20th percentile — 20.3% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.003 · newest: 0.003 · change: 0.000
Affected products
- Alps Electric Co., Ltd. Remote Keyless Entry System (Rkes) R53r0 — versions R53R0
Weakness classification (CWE)
References
- fccid.io/CWTR53R0 (product)
- www.asrg.io/security-advisories/cve-2026-49319-suzuki-swift-2024-rkes-rollback-… (third-party-advisory)
Frequently asked questions
- What is CVE-2026-49319?
- CVE-2026-49319 is a medium-severity vulnerability in Alps Electric Co., Ltd. Remote Keyless Entry System (Rkes) R53r0, classified under Authentication Bypass by Capture-replay. CVSS score: 6.5/10. Published 2026-06-25.
- How severe is CVE-2026-49319?
- Medium severity. CVSS v3 base score is 6.5 out of 10.