What’s Vulnerable › Vulnerabilities

CVE-2021-28665

• Severity: high (CVSS 7.5 v3.1)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 1.0% probability of exploitation in the next 30 days
• Public exploit or detection template: none known
• Published: 2021-05-06 · updated 2026-06-17
• Weakness: CWE-401

Description

Stormshield SNS with versions before 3.7.18, 3.11.6 and 4.1.6 has a memory-management defect in the SNMP plugin that can lead to excessive consumption of memory and CPU resources, and possibly a denial of service.

Affected products

• Stormshield Network Security: from 3.0.0 before 3.7.18 — fixed in 3.7.18
• Stormshield Network Security: from 3.8.0 before 3.11.5; from 4.0.0 before 4.1.5 — fixed in 3.11.5, 4.1.5

How to fix

Upgrade to a fixed version: Stormshield Network Security 3.7.18; Stormshield Network Security 3.11.5, 4.1.5. Check the vendor advisory for mitigations.

References

• https://advisories-admin.stormshield.eu/2021-014
• https://advisories.stormshield.eu/
• https://advisories-admin.stormshield.eu/2021-014
• https://advisories.stormshield.eu/

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