CVE-2026-49319
Official description Straight from the sourceThe vendor's or NVD's own wording, published unedited. Authoritative, but often terse — it says what broke, rarely what to do.
NVD · uneditedRemote 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).
Technical summary Written by usOur analysis, written from the advisory, the CVSS vector and the affected-version data. It adds context the advisory leaves out, and never invents facts that are not in the source.
dbcve analysis · moderate confidenceThe 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.
Verify against the referenced sources before acting — the references below are authoritative for this CVE, this summary is not.
CVSS breakdown How the score is builtThe industry scoring standard. It rates how the flaw is reached, what it takes to exploit, and what an attacker gains — the score is derived from those, not the other way round.
From the vector- Attack vector
- Adjacent
- Complexity
- Low
- Privileges
- None
- User interaction
- None
- Scope
- Unchanged
- Confidentiality
- None
- Integrity
- High
- Availability
- None
CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N
Am I affected? How to checkSteps we derive from the advisory and the affected-version data, so you can decide whether this CVE reaches your setup. They are a guide, not a scan — your own configuration is the authority.
dbcve checksWork through these to decide whether this CVE applies to you.
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Identify the key fob modelLocate the FCC ID printed on the key fob (usually inside the battery compartment or on the back of the fob)Affected if The FCC ID is CWTR53R0 (ALPS ALPINE ALPINE model)
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Check key fob firmware versionConsult the vehicle owner manual, contact ALPS ALPINE or Suzuki dealer, or check for firmware version markings on the fob packaging/documentationAffected if The firmware version is older than any patched release (no patched version specified in CVE data)
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Verify rolling code implementationContact the vehicle manufacturer to confirm whether the RKES uses cryptographically secure, time-synchronized rolling codes with replay attack protectionAffected if The system uses basic rolling codes without replay attack prevention mechanisms
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Test for replay vulnerabilityUse an RF capture device to record two consecutive lock/unlock transmissions within RF range, then replay the first transmission alone to see if it triggers a vehicle responseAffected if The vehicle accepts a single replayed transmission, indicating the system enters a receptive state after the first replay
You are affected if your key fob carries FCC ID CWTR53R0 and the vehicle RKES accepts replayed rolling codes without requiring time-synchronized fresh codes.
Generated from the published advisory. Verify against your own configuration.
Remediation Closing itWhat it takes to close this. Where a vendor fix exists we point at it; where none exists we say so plainly, and can build one. Effort estimates are scoped from the advisory, not from your codebase.
From vendor dataThe 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.
- Consultation8.0 h
- Implementation24.0 h
- Testing16.0 h
- Review / QA8.0 h
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Free · runs locallyCheck whether your project pulls in CVE-2026-49319 — or any other known-vulnerable package — straight from your lock files. Free and open source; it runs locally and uploads nothing.
References Go to the primary sourcePrimary sources — vendor advisories, patches and trackers. Where our summary and a reference disagree, the reference wins.
Primary sourcesPractitioner notes
ContributedPeer-ranked notes from engineers who’ve handled CVE-2026-49319 in production — separate from our analysis above.
The advisory tells you what broke. It rarely tells you what actually worked. If you’ve dealt with this one, that detail is what the next engineer is searching for.
- The version that genuinely resolved it — not the one the vendor claimed
- A config change or rule that shut the vector down
- A gotcha in the upgrade path that cost you an afternoon
No notes yet
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- Verified mitigations, workarounds, and config changes
- Version or environment caveats, and links to real fixes
- No weaponised exploit code, or anything meant to cause harm
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