CVE-2025-34503

Shuffle Master Deck Mate 1 Unauthenticated EEPROM Firmware Execution

CVSS 7 HIGHEPSS 0.1%CWE-1326 CWE-347

Vexday Risk Score

21Low

SSVC decision (CISA)

Track

No exploitation signal → monitor

CVSS 7EPSS 0.1%KEV nãoPoC —Nuclei —Metasploit —Patch —

Lifecycle

24 Oct 2025Published on NVD

Recommendation: Monitor — no exploitation signal at the moment.

Deck Mate 1 executes firmware directly from an external EEPROM without verifying authenticity or integrity. An attacker with physical access can replace or reflash the EEPROM to run arbitrary code that persists across reboots. Because this design predates modern secure-boot or signed-update mechanisms, affected systems should be physically protected or retired from service. The vendor has not indicated that firmware updates are available for this legacy model.

CVSS:4.0/AV:P/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N

Affected products

Light & Wonder, Inc. / SHFL Entertainment, Inc. / Shuffle Master, Inc. · Deck Mate 1

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References

https://www.ioactive.com/wp-content/uploads/2025/05/IOActive-card-shuffler-security.pdf https://www.vulncheck.com/advisories/shuffle-master-deck-mate-1-unauthenticated-eeprom-firmware-execution