CVE-2023-40709: OPTO22 Snap Pac s1 Firmware

High severity, CVSS 7.5. EPSS: 0.6% chance of exploitation in the next 30 days.

An adversary could crash the entire device by sending a large quantity of ICMP requests if the controller has the built-in web server enabled but does not have the built-in web server completely set up and configured for the SNAP PAC S1 Firmware version R10.3b

Affected products

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

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