5.3

CVE-2021-3384: stormshield stormshield_network_security

CVSS: 5.3v3.1MediumModified
Published 02-03-2021Last modified 03-08-2024
Open JSON

Vulnerability summary

CVE-2021-3384 is a medium (CVSS 5.3) vulnerability in stormshield stormshield_network_security. EPSS estimates a 1.05% chance of exploitation in the next 30 days, higher than 63.7% of scored vulnerabilities.

Overall risk
21/100
0100
Low · default modelHow is this calculated?
CVSS score
5.3/10
010
Medium · v3.1 (NVD)
EPSS score
1.05%
0%100%
Low · +0.04 pp in 30 days
KEVNot listedIn no KEV catalog
RansomwareNone recordedNo known use recorded
Public exploits0No public exploits recorded

Timeline

  1. 02-03-2021
    PublishedVulnerability first disclosed.
  2. 03-08-2024
    Last modifiedVulnerability information updated.

Description

A vulnerability in Stormshield Network Security could allow an attacker to trigger a protection related to ARP/NDP tables management, which would temporarily prevent the system to contact new hosts via IPv4 or IPv6. This affects versions 2.0.0 to 2.7.7, 2.8.0 to 2.16.0, 3.0.0 to 3.7.16, 3.8.0 to 3.11.4, and 4.0.0 to 4.1.5. Fixed in versions 2.7.8, 3.7.17, 3.11.5, and 4.2.0.

CVSS metrics

2 scores · 1 source · 2 versions

EPSS trend

Probability

1.05%

Chance of exploitation in the next 30 days

Percentile

64%

Versus all other CVEs

30-day change

+0.04 pp

From 1.02% on 19-09-2026

19-09-202619-10-2026
EPSS score
1.05%

Known exploited

Compare KEV catalogs

Not in any of the 3 tracked catalogs.

Public exploits

0 found

No public exploits indexed.

Weaknesses

CWE · root cause

No weakness data has been published for this record.

Affected systems

Stormshield1 product

1 vendor · 1 product

References

1 links