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"product": "Deck Mate 2",
"vendor": "Light & Wonder, Inc. / SHFL Entertainment, Inc. / Shuffle Master, Inc.",
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"type": "finder",
"value": "Joseph Tartaro of IOActive"
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"value": "Deck Mate 2's firmware update mechanism accepts packages without cryptographic signature verification, encrypts them with a single hard-coded AES key shared across devices, and uses a truncated HMAC for integrity validation. Attackers with access to the update interface - typically via the unit's USB update port - can craft or modify firmware packages to execute arbitrary code as root, allowing persistent compromise of the device's integrity and deck randomization process. Physical or on-premises access remains the most likely attack path, though network-exposed or telemetry-enabled deployments could theoretically allow remote exploitation if misconfigured. The vendor confirmed that firmware updates have been issued to correct these update-chain weaknesses and that USB update access has been disabled on affected units.
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"subConfidentialityImpact": "NONE",
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"tags": [
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"url": "https://www.ioactive.com/wp-content/uploads/2025/05/IOActive-card-shuffler-security.pdf"
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"tags": [
"media-coverage"
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"url": "https://www.wired.com/story/card-shuffler-hack/"
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"url": "https://www.vulncheck.com/advisories/shuffle-master-deck-mate-2-insecure-update-chain"
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"value": "Light & Wonder reports that it has deployed firmware updates addressing the update-chain weaknesses IOActive described (including fixes to the cryptographic integrity checks) and has disabled the USB update port on affected Deck Mate 2 units.
"
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"value": "Light & Wonder reports that it has deployed firmware updates addressing the update-chain weaknesses IOActive described (including fixes to the cryptographic integrity checks) and has disabled the USB update port on affected Deck Mate 2 units."
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"source": {
"discovery": "UNKNOWN"
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"title": "Shuffle Master Deck Mate 2 Insecure Update Chain",
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"timestamp": "2025-10-27T15:20:40.299784Z",
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