CVE-2023-40708: OPTO22 Snap Pac s1 Firmware

Medium severity, CVSS 5.3. EPSS: 0.5% chance of exploitation in the next 30 days.

The File Transfer Protocol (FTP) port is open by default in the SNAP PAC S1 Firmware version R10.3b. This could allow an adversary to access some device files.

Affected products

• OPTO22 Snap Pac s1 Firmware: version r10.3b only

Published 2023-08-24. Last modified 2026-06-17.