CVE-2018-25147

Microhard Systems IPn4G 1.1.0 Default Credentials Authentication Bypass

HIGH
7.5
CVSS Score
Published: December 24, 2025 at 07:27 PM UTC
Updated: June 17, 2026 at 01:54 AM UTC
13 products affected across 3 vendorsBullet LTE FirmwareIPN3GB FirmwareVIP4GB WIFI N Firmware

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Severity
HIGH7.5
Exploit prediction
EPSS 0.4%
SSVC
PoC

Description

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.

Affected

Our own answer: ranges merged, affected separated from platform-only, with confidence and review flags.

microhardcorp-bullet-lte (environment)
microhardcorp-bulletplus (same device)
microhardcorp-dragon-lte (same device)
microhardcorp-ipn3gb (same device)
microhardcorp-ipn3gii (same device)
microhardcorp-ipn4g (same device)
microhardcorp-ipn4gii (same device)

Remediation

No guide yet

No remediation guidance has been written for this CVE yet, and no fixed version or vendor advisory is recorded against it.

References (3)

Product
Source: cverecord
http://www.microhardcorp.com
Third Party AdvisoryExploit
Source: cverecord
https://www.zeroscience.mk/en/vulnerabilities/ZSL-2018-5480.php

SSVC — Action Prioritization

SSVCPoCAutomatableTotal impact

SSVC signals action urgency (what to patch first), separate from CVSS which measures severity.

CVSS

7.5HIGHVulnCheck
Attack Vector
NETWORK
Complexity
LOW
Privileges
NONE
User Interaction
NONE
Scope
UNCHANGED
Confidentiality
HIGH
Integrity
NONE
Availability
NONE
Vector?

Quick Info

StatusANALYZED
CWE
CWE-1392

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