CVE-2021-3398: Stormshield Network Security

Medium severity, CVSS 5.8. EPSS: 0.9% chance of exploitation in the next 30 days.

Stormshield Network Security (SNS) 3.x has an Integer Overflow in the high-availability component.

Affected products

• Stormshield Stormshield Network Security: from 3.0.0, up to and including 3.7.24; from 3.8.0, up to and including 3.11.12

Published 2022-02-10. Last modified 2026-06-17.