Is CVE-2021-31617 actively exploited?

No active exploitation of CVE-2021-31617 has been confirmed so far. Continue monitoring, as exploit status can change.

Can CVE-2021-31617 be exploited remotely?

Yes. CVE-2021-31617 is exploitable remotely over the network (CVSS attack vector: Network).

What is the CVSS score of CVE-2021-31617?

CVE-2021-31617 has a CVSS score of 9.8 (CRITICAL).

HOME VULNERABILITIESCVE-2021-31617

CRITICAL

CVE-2021-31617

CWE-119Published: January 31, 2022· Updated: Jun 17, 2026

9.8

CVSS v3.1

Official Description

In ASQ in Stormshield Network Security (SNS) 1.0.0 through 2.7.8, 2.8.0 through 2.16.0, 3.0.0 through 3.7.20, 3.8.0 through 3.11.8, and 4.0.1 through 4.2.2, mishandling of memory management can lead to remote code execution.

NVD Source

Technical Analysis

CVE-2021-31617 can be exploited remotely over the network without requiring physical or adjacent access, significantly expanding the attack surface for threat actors.

The vulnerability requires no privileges and no user interaction, making it a prime target for automated exploitation campaigns and worm-like propagation.

A successful exploit results in complete confidentiality breach (data exposure), full integrity compromise (data manipulation), availability disruption (denial of service), with a CVSS base score of 9.8.

From a weakness classification perspective (CWE-119): Buffer overflow vulnerabilities can lead to arbitrary code execution or denial of service by corrupting adjacent memory.