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CVE Record

CVE-2018-25147: Microhard Systems IPn4G 1.1.0 Default Credentials Authentication Bypass

Microhard Systems IPn4G 1.1.0 contains hardcoded default credentials that cannot be changed through normal gateway operations. Attackers can exploit these default credentials to gain unauthorized root-level access to the device by logging in with predefined username and password combinations.

CriticalCVSS 9.3Not KEV-listedUpdated
Glexia's TakeAutomated analysis

Security readout for executives and security teams

CVE-2018-25147 affects Microhard IPn4G 1.1.0 build 1098 gateways. The issue is hardcoded default credentials that normal administration cannot change, enabling unauthenticated attackers to obtain root-level access. This is business-critical where these cellular gateways are internet-reachable or protect operational technology, remote sites, or serial/Ethernet connectivity. Exposure is most likely for organizations using Microhard IPn4G 1.1.0 build 1098 with management services reachable from the internet, partner networks, cellular networks, or untrusted internal segments. Asset discovery is essential because these devices may sit outside normal server inventories. Treat as urgent for exposed or operationally important gateways. Root-level access to a network edge device can disrupt remote connectivity and support lateral movement. Prioritize discovery, exposure reduction, and vendor remediation verification before routine patch cycles. Mitigation focus: Identify all Microhard IPn4G devices and confirm firmware/build versions.; Check Microhard guidance for firmware updates or official remediation.; Remove management access from the public internet and untrusted networks..

Prepared

Generated from the cited source records. This long-tail analysis has not been individually reviewed by a named human.

Potential ATT&CK relevance

Conservative CVE-to-ATT&CK context

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ATT&CK lookup starting points

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cwe · low confidence lookup

CWE-1392: Exact CWE lookup

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description · low confidence lookup

Credential and access behavior lookup

The CVE wording references authentication or credential exposure, so valid-account and credential-access review may help. This is a Glexia inferred lookup path, not an official MITRE, ATT&CK, or CVE Program mapping.

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cve · low confidence lookup

CVE-2018-25147 mapping review

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Vulnerability profileCVE Program record
Severity
Critical
CVSS
9.3 (4.0)
Known Exploited
No
Published

Vector: CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N

Official CVE source material

CNA and ADP enrichment extracted from CVE v5

These fields come from the CVE record and ADP containers, not from Glexia's Take. They preserve time-varying source decisions such as CISA SSVC, KEV status, CVSS metrics, and provider references.

1CVSS vectors
0Timeline events
0ADP providers
3Source links

CVSS vector scores

1 official score

We collect every scored CVSS vector available in the official CNA and ADP containers. When more than one version is present, the table keeps the source vectors side by side instead of collapsing them into the highest score.

ScoreVersionSeverityVectorExploitImpactSource
9.3CVSS 4.0CriticalCVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:NPrimary CVE score

Vulnerability scoring details

Base CVSS 4.0 score

9.3Critical
CVSS 4.0 vector shape for CVE-2018-25147Attack VectorAttack ComplexityAttack RequirementsPrivileges RequiredUser InteractionVS ConfidentialityVS IntegrityVS AvailabilitySS ConfidentialitySS IntegritySS Availability

Vector: CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N

Attack Vector
NetworkAdjacentLocalPhysical
Attack Complexity
LowHigh
Attack Requirements
NonePresent
Privileges Required
NoneLowHigh
User Interaction
NonePassiveActive
VS Confidentiality
HighLowNone
VS Integrity
HighLowNone
VS Availability
HighLowNone
SS Confidentiality
HighLowNone
SS Integrity
HighLowNone
SS Availability
HighLowNone

Source materials

Affected products

Products and packages named in the record

VendorProductVersion / packageStatus
Microhard SystemsMicrohard Systems 3G/4G Cellular Ethernet and Serial Gateway Default CredentialsIPn4G 1.1.0 build 1098Listed
Weakness

CWE details

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CWE-1392 · source CWE mapping

Use of Default Credentials

Use of Default Credentials represents a recurring weakness pattern that can create exploitable paths when design, validation, or implementation controls are missing.