CVE-2017-17668: Ncr s1 Dispenser Controller Firmware

High severity, CVSS 7.5. EPSS: 1.1% chance of exploitation in the next 30 days.

Memory write mechanism in NCR S1 Dispenser controller before firmware version 0x0156 allows an unauthenticated user to upgrade or downgrade the firmware of the device, including to older versions with known vulnerabilities.

Affected products

• Ncr s1 Dispenser Controller Firmware: before 0x0156 (fixed in 0x0156)

Published 2018-03-20. Last modified 2026-06-17.