Private-network access via serial-derived WPA2 key
Published Oct 3, 2024 · Updated Jul 5, 2026
Insufficient entropy in Eufy HomeBase 2 before 3.3.4.1h allows physically proximate attackers to access the user's private network. The home_security binary derives the eight-character WPA2 key by Base64-encoding the serial number's MD5 hash and retaining eight characters, while only six hash characters affect the result. An attacker within wireless range can capture a handshake, recover the key offline in about 20 seconds, join the dedicated network, and pivot without restriction to the private network.
Summary
What happened
Insufficient entropy in Eufy HomeBase 2 before 3.3.4.1h allows physically proximate attackers to access the user's private network. The home_security binary derives the eight-character WPA2 key by Base64-encoding the serial number's MD5 hash and retaining eight characters, while only six hash characters affect the result. An attacker within wireless range can capture a handshake, recover the key offline in about 20 seconds, join the dedicated network, and pivot without restriction to the private network.
The record
- CVE
- CVE-2023-37822
- Published
- Oct 3, 2024
- Updated
- Jul 5, 2026
- Vendor
- Unknown vendor
- Product
- Unknown product
- Classifications
- CWE-331, T1557
- Attack vector
- adjacent
- Privileges
- unauthenticated
Timeline
How it unfolded
- Oct 3, 2024CVE publishedPublication date reported by the CVE source.
- Jul 5, 2026Record updatedLatest update available in the CVE record.
Exploitability
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Published CVSS scores
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Attacks
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Public exploit references
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Technologies
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