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.

Published: 2015-08-30 Last update: 2026-05-06 Assigner: [email protected] Source: [email protected]
NVD Status：Modified，CVE State: published
View at NVD, CVE.org, EUVD

CVE-2015-3966 is rated Low Risk (33.8/100): CVSS Medium severity, with medium exploitation likelihood (EPSS 0.28%). Monitor for updates and reassess as exploit intelligence or EPSS changes.

Risk is dynamic; we continuously reassess and refresh what is shown on this page as upstream context changes.

Exploit prediction scoring system (EPSS) score for CVE-2015-3966

EPSS lead: Daily EPSS estimates relative likelihood of exploitation; percentile ranks this CVE among scored vulnerabilities (higher = more severe relative rank).

# Date Old EPSS score New EPSS score Delta (New - Old)
1 2026-01-21 0.20% 0.28% +0.07%
2 2025-12-06 0.33% 0.20% -0.12%
3 2025-03-30 — 0.33% —

Full EPSS history (8 records total)

Common vulnerability scoring system (CVSS) metrics for CVE-2015-3966

CVSS metrics for this CVE.

Base score Version Severity Vector Exploitability Impact Score source
4.0 2.0 MEDIUM
AV:N/AC:L/Au:S/C:N/I:N/A:P Click to expand
Access vector (AV:N)
Can be exploited remotely over network reachability.
Access complexity (AC:L)
Exploitation conditions are straightforward and predictable.
Authentication (AU:S)
A single authentication is required.
Confidentiality impact (C:N)
No confidentiality impact.
Integrity impact (I:N)
No integrity impact.
Availability impact (A:P)
Partial availability impact.
 8.0 2.9 [email protected]

Weakness enumeration for CVE-2015-3966

Affected software / configurations for CVE-2015-3966

Vendor Product Version Raw CPE
innominate mguard_firmware 8.0.0 cpe:2.3:o:innominate:mguard_firmware:8.0.0:*:*:*:*:*:*:*
innominate mguard_firmware 8.0.1 cpe:2.3:o:innominate:mguard_firmware:8.0.1:*:*:*:*:*:*:*
innominate mguard_firmware 8.0.2 cpe:2.3:o:innominate:mguard_firmware:8.0.2:*:*:*:*:*:*:*
innominate mguard_firmware 8.0.3 cpe:2.3:o:innominate:mguard_firmware:8.0.3:*:*:*:*:*:*:*
innominate mguard_firmware 8.1.1 cpe:2.3:o:innominate:mguard_firmware:8.1.1:*:*:*:*:*:*:*
innominate mguard_firmware 8.1.2 cpe:2.3:o:innominate:mguard_firmware:8.1.2:*:*:*:*:*:*:*
innominate mguard_firmware 8.1.3 cpe:2.3:o:innominate:mguard_firmware:8.1.3:*:*:*:*:*:*:*
innominate mguard_firmware 8.1.4 cpe:2.3:o:innominate:mguard_firmware:8.1.4:*:*:*:*:*:*:*
innominate mguard_firmware 8.1.5 cpe:2.3:o:innominate:mguard_firmware:8.1.5:*:*:*:*:*:*:*
innominate mguard_firmware 8.1.6 cpe:2.3:o:innominate:mguard_firmware:8.1.6:*:*:*:*:*:*:*

References for CVE-2015-3966

cvelogic Threat Intelligence