A vulnerability in Stormshield Network Security could allow an attacker to trigger a…
Priority LOW 26Published · Updated
Key facts
- Attack vector
- Network
- Privileges required
- None
- User interaction
- None
- Attack complexity
- Low
- Impact type
- —
- Confidentiality · integrity · availability
- None · None · Low
- Fix status
- No fix listed
Attack profile from CVSS 3.1 · NVD. Fix status from CNA.
Summary
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.
Why it matters now
EPSS 0.01052 64th percentileScored 2026-11-07
Fix No fix listed No fixed version in the sources yet
SSVC decision points
Not available: CISA has not published SSVC decision points for this record.
Affected products
| Vendor | Product | Affected versions | Fixed in | Status | Source |
|---|---|---|---|---|---|
| — | — | all versions | — | No fix listed | CNA |
- — Vendor— Affected all versions Fixed in — No fix listed CNA
CPE configurations NVD · 1
| CPE | Versions | Role | Vendor |
|---|---|---|---|
| cpe:2.3:a:stormshield:stormshield_network_security:*:*:*:*:*:*:*:* | 2.0.0 to before 2.7.8; 2.8.0 – 2.16.0; 3.0.0 – 3.7.17; 3.8.0 – 3.11.5; 4.0.0 to before 4.1.5 | Vulnerable | Stormshield |
- cpe:2.3:a:stormshield:stormshield_network_security:*:*:*:*:*:*:*:* Versions 2.0.0 to before 2.7.8; 2.8.0 – 2.16.0; 3.0.0 – 3.7.17; 3.8.0 – 3.11.5; 4.0.0 to before 4.1.5 Vulnerable ·Stormshield
Remediation
No fixed version listed by the sources yet.
Timeline
- 2026-10-02 Threatist record created from CVE-2021-3384
- 2026-10-03 Alias added: GHSA-qqfg-vxw9-g865
References
More Stormshield Network Security vulnerabilities
- TI-2022-17498 zlib through 1.2.12 has a heap-based buffer over-read or buffer overflow in inflate in… CVSS 3.1CRITICAL 9.8
- TI-2023-00271 X.400 address type confusion in X.509 GeneralName CVSS 3.1HIGH 7.4
- TI-2023-06741 Buffer overflow in Cisco Secure Web Appliance CVSS 3.1CRITICAL 9.8
- TI-2022-04067 Double free after calling PEM_read_bio_ex CVSS 3.1HIGH 7.5
- TI-2002-02356 The Diffie-Hellman Key Agreement Protocol allows remote attackers (from the client side)… CVSS 3.1HIGH 7.5
- TI-2020-05988 Out-of-bounds write in MPD: FreeBSD PPP daemon CVSS 3.1CRITICAL 9.8
Sources
- CVE-2021-3384 · CVE Program
- CVE-2021-3384 · NVD
- FIRST EPSS
- GHSA-qqfg-vxw9-g865 · GitHub Advisory Database · CC BY 4.0
This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences