Indefinite vehicle unlock via replayed key-fob signals
Published Aug 24, 2022 · Updated Aug 3, 2024
Authentication bypass in certain Mazda vehicles through 2020 allows remote attackers to unlock doors via radio replay of key-fob signals. The RKE receiver accepts three consecutive captured valid signals, rolls its synchronization counter backward, and continues accepting replayed unlock commands indefinitely. The attack requires radio proximity and prior capture of legitimate fob transmissions; published testing demonstrated unlocking and resynchronization but did not establish exploitation in the wild.
Summary
What happened
Authentication bypass in certain Mazda vehicles through 2020 allows remote attackers to unlock doors via radio replay of key-fob signals. The RKE receiver accepts three consecutive captured valid signals, rolls its synchronization counter backward, and continues accepting replayed unlock commands indefinitely. The attack requires radio proximity and prior capture of legitimate fob transmissions; published testing demonstrated unlocking and resynchronization but did not establish exploitation in the wild.
The record
- CVE
- CVE-2022-36945
- Published
- Aug 24, 2022
- Updated
- Aug 3, 2024
- Vendor
- Unknown vendor
- Product
- Unknown product
- Classifications
- CWE-294, T1040
- Attack vector
- adjacent
- Privileges
- unauthenticated
Timeline
How it unfolded
- Aug 24, 2022CVE publishedPublication date reported by the CVE source.
- Aug 3, 2024Record updatedLatest update available in the CVE record.
Exploitability
Present is not the same as exploitable
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Is a vulnerable build present?
What conditions does exploitation require?
What is affected?
Affected products and versions are unavailable in this record.
Published CVSS scores
CVSS describes severity. EPSS estimates exploitation probability.
Attacks
What attackers are doing with it
Daily unique IPs observed by Shadowserver honeypots for known exploited vulnerabilities (KEVs). Missing observations do not establish an absence of attacks.
Public exploit references
- RollBack: A New Time-Agnostic Replay Attack Against the Automotive Remote Keyless Entry Systemsproof of concept · demonstrated
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Technologies
Your stack
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Your stack
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