CVE-2021-28127: Stormshield Network Security

High severity, CVSS 7.5. EPSS: 0.9% chance of exploitation in the next 30 days.

An issue was discovered in Stormshield SNS through 4.2.1. A brute-force attack can occur.

Affected products

• Stormshield Stormshield Network Security: from 2.0.0, up to and including 2.7.9; from 2.8.0, up to and including 2.16.0; from 3.0.0, up to and including 3.7.19; from 3.8.0, up to and including 3.11.7; from 4.0.0, up to and including 4.1.5; version 4.2.1 only

Published 2021-07-01. Last modified 2026-06-17.