Unauthorized door unlocking via rolling-code rollback replay
Published Jun 25, 2026 · Updated Jun 25, 2026
Authentication bypass in ALPS ALPINE Passive Keyless Entry R53R0 allows physically proximate attackers to unlock vehicle doors. The resynchronization logic accepts the first of two captured rolling codes to roll back its state, then accepts the second code as a valid lock or unlock command. Exploitation requires RF-range capture of two consecutive legitimate transmissions; the demonstrated effect is interior access, not immobilizer bypass or vehicle operation.
Summary
What happened
Authentication bypass in ALPS ALPINE Passive Keyless Entry R53R0 allows physically proximate attackers to unlock vehicle doors. The resynchronization logic accepts the first of two captured rolling codes to roll back its state, then accepts the second code as a valid lock or unlock command. Exploitation requires RF-range capture of two consecutive legitimate transmissions; the demonstrated effect is interior access, not immobilizer bypass or vehicle operation.
The record
- CVE
- CVE-2026-49319
- Published
- Jun 25, 2026
- Updated
- Jun 25, 2026
- Vendor
- ALPS ALPINE CO., LTD.
- Product
- Passive Keyless Entry R53R0
- Classifications
- CWE-294, CAPEC-60, T1040
- Attack vector
- adjacent
- Privileges
- unauthenticated
Timeline
How it unfolded
- Jun 25, 2026CVE publishedPublication date reported by the CVE source.
- Jun 25, 2026Record updatedLatest update available in the CVE record.
Exploitability
Present is not the same as exploitable
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Is a vulnerable build present?
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- Affected versionversion=R53R0
What conditions does exploitation require?
What is affected?
Published CVSS scores
CVSS describes severity. EPSS estimates exploitation probability.
Attacks
What attackers are doing with it
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Weakness, pattern, technique
Public exploit references
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Technologies
Your stack
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Your stack
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