How severe is CVE-2021-31814?

CVE-2021-31814 has a CVSS 3.x base score of 6.1, rated medium severity. It is exploitable over local access with low attack complexity, requires low privileges and no user interaction. Impact on confidentiality is low, integrity none, and availability high.

Is CVE-2021-31814 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (10th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2021-31814?

CVE-2021-31814 primarily affects Stormshield Stormshield Network Security. In total, 2 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.

How do I fix CVE-2021-31814?

Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.

When was CVE-2021-31814 published?

CVE-2021-31814 was published on 2022-02-10 and last updated on 2026-06-17.

CVE-2021-31814

CVE-2021-31814 is a medium-severity vulnerability in Stormshield Stormshield Network Security with a CVSS 3.x base score of 6.1. It is not currently listed as actively exploited by CISA, and its EPSS exploit-prediction score is low. The underlying weakness is classified as CWE-306.

Key facts

Severity: Medium (CVSS 3.x base score 6.1)
CVSS v2: 3.6
EPSS exploit prediction: 0% (10th percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-306
Affected product: Stormshield Stormshield Network Security
Published: 2022-02-10
Last modified: 2026-06-17

Description

In Stormshield 1.1.0, and 2.1.0 through 2.9.0, an attacker can block a client from accessing the VPN and can obtain sensitive information through the SN VPN SSL Client.

Frequently asked questions

What is CVE-2021-31814?: In Stormshield 1.1.0, and 2.1.0 through 2.9.0, an attacker can block a client from accessing the VPN and can obtain sensitive information through the SN VPN SSL Client.
How severe is CVE-2021-31814?: CVE-2021-31814 has a CVSS 3.x base score of 6.1, rated medium severity. It is exploitable over local access with low attack complexity, requires low privileges and no user interaction. Impact on confidentiality is low, integrity none, and availability high.
Is CVE-2021-31814 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (10th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2021-31814?: CVE-2021-31814 primarily affects Stormshield Stormshield Network Security. In total, 2 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.
How do I fix CVE-2021-31814?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.
When was CVE-2021-31814 published?: CVE-2021-31814 was published on 2022-02-10 and last updated on 2026-06-17.

References

Affected products (2)

cpe:2.3:a:stormshield:stormshield_network_security:*:*:*:*:*:*:*:*
cpe:2.3:a:stormshield:stormshield_network_security:1.1.0:*:*:*:*:*:*:*

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