# CVE-2025-34503

## Summary

- **CVE ID:** CVE-2025-34503
- **Severity:** HIGH
- **CVSS Score:** 7 (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)
- **CWE:** CWE-347, CWE-1326
- **Published:** Oct 24, 2025
- **Last Modified:** Jul 28, 2026

## Description

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.

## Affected Products

- Light & Wonder, Inc. / SHFL Entertainment, Inc. / Shuffle Master, Inc. — Deck Mate 1 (0)

## References

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

## Exploitation Prediction (EPSS)

- **EPSS Score:** 0.12%
- **EPSS Percentile:** 2.2

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_Exported from OnDuty AI Vulnerability Intelligence on 2026-09-10._