How severe is CVE-2015-3966?

CVE-2015-3966 has a CVSS 2.0 base score of 4.0, rated medium severity.

Is CVE-2015-3966 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 2% (73rd percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2015-3966?

CVE-2015-3966 primarily affects Innominate Mguard Firmware. In total, 10 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.

How do I fix CVE-2015-3966?

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

When was CVE-2015-3966 published?

CVE-2015-3966 was published on 2015-08-30 and last updated on 2026-06-17.

CVE-2015-3966

CVE-2015-3966 is a medium-severity vulnerability in Innominate Mguard Firmware with a CVSS 2.0 base score of 4.0. 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-20.

Key facts

Severity: Medium (CVSS 2.0 base score 4.0)
EPSS exploit prediction: 2% (73rd percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-20
Affected product: Innominate Mguard Firmware
Published: 2015-08-30
Last modified: 2026-06-17

Description

The IPsec SA establishment process on Innominate mGuard devices with firmware 8.x before 8.1.7 allows remote authenticated users to cause a denial of service (VPN service restart) by leveraging a peer relationship to send a crafted configuration with compression.

Frequently asked questions

What is CVE-2015-3966?: The IPsec SA establishment process on Innominate mGuard devices with firmware 8.x before 8.1.7 allows remote authenticated users to cause a denial of service (VPN service restart) by leveraging a peer relationship to send a crafted configuration with compression.
How severe is CVE-2015-3966?: CVE-2015-3966 has a CVSS 2.0 base score of 4.0, rated medium severity.
Is CVE-2015-3966 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 2% (73rd percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2015-3966?: CVE-2015-3966 primarily affects Innominate Mguard Firmware. In total, 10 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.
How do I fix CVE-2015-3966?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.
When was CVE-2015-3966 published?: CVE-2015-3966 was published on 2015-08-30 and last updated on 2026-06-17.

References

Affected products (10)

cpe:2.3:o:innominate:mguard_firmware:8.0.0:*:*:*:*:*:*:*
cpe:2.3:o:innominate:mguard_firmware:8.0.1:*:*:*:*:*:*:*
cpe:2.3:o:innominate:mguard_firmware:8.0.2:*:*:*:*:*:*:*
cpe:2.3:o:innominate:mguard_firmware:8.0.3:*:*:*:*:*:*:*
cpe:2.3:o:innominate:mguard_firmware:8.1.1:*:*:*:*:*:*:*
cpe:2.3:o:innominate:mguard_firmware:8.1.2:*:*:*:*:*:*:*
cpe:2.3:o:innominate:mguard_firmware:8.1.3:*:*:*:*:*:*:*
cpe:2.3:o:innominate:mguard_firmware:8.1.4:*:*:*:*:*:*:*
cpe:2.3:o:innominate:mguard_firmware:8.1.5:*:*:*:*:*:*:*
cpe:2.3:o:innominate:mguard_firmware:8.1.6:*:*:*:*:*:*:*

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