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CVE Record

CVE-2018-3832: An exploitable firmware update vulnerability exists in Insteon Hub running firmware version 1013.

An exploitable firmware update vulnerability exists in Insteon Hub running firmware version 1013. The HTTP server allows for uploading arbitrary MPFS binaries that could be modified to enable access to hidden resources which allow for uploading unsigned firmware images to the device. To trigger this vulnerability, an attacker can upload an MPFS binary via the '/mpfsupload' HTTP form and later on upload the firmware via a POST request to 'firmware.htm'.

CriticalCVSS 9.9Not KEV-listedUpdated
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Glexia's TakeAutomated analysiscritical

Security readout for executives and security teams

Plain-English summary

Insteon Hub 2245-222 firmware 1013 has a critical update-process flaw. A user with hub access could upload modified content that exposes hidden firmware-update functions, then load unsigned firmware. Business impact is potential full device compromise, including loss of confidentiality, integrity, and availability for connected smart-home or building-control functions.

Executive priority

Treat this as high-priority for any affected deployed hubs. The practical urgency depends on whether management access is exposed beyond trusted administrators.

Technical view

The hub HTTP server accepts arbitrary MPFS binaries. Modified MPFS content can expose hidden resources that allow unsigned firmware uploads. The CVSS 3.0 score is 9.9 with network attack vector, low complexity, low privileges, no user interaction, changed scope, and high CIA impact.

Likely exposure

Exposure is limited to Insteon Hub 2245-222 devices running firmware 1013, especially where the hub HTTP interface is reachable by untrusted users or networks.

Exploitation context

The CVE is not listed as KEV in the provided bundle. The sources describe exploitability but do not provide evidence of active exploitation in the wild.

Researcher notes

No CWE is listed in the provided CVE data. Patch status is not named in the source bundle. Avoid assuming broader Insteon products are affected without vendor evidence.

Mitigation direction

  • Identify Insteon Hub 2245-222 devices and confirm firmware version.
  • Check Insteon or vendor guidance for fixed firmware or support status.
  • Restrict hub HTTP access to trusted management networks only.
  • Remove any internet exposure to the hub management interface.
  • If no supported fix exists, isolate or replace affected hubs.
  • Monitor for unexpected firmware, configuration, or behavior changes.

Validation and detection

  • Inventory hubs and record model and firmware version.
  • Verify whether firmware 1013 is present.
  • Confirm the HTTP management interface is not externally reachable.
  • Review access controls for users who can reach hub management.
  • Check device state for unexpected firmware or configuration changes.
  • Document vendor guidance, patch status, or replacement decision.
Prepared
Confidence
medium
Sources
3

Public sources used

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

These mappings and lookup hints may be relevant to the vulnerability behavior, CWE, affected product, or exposure path. Glexia-inferred context is not an official MITRE, ATT&CK, CWE, or CVE Program mapping.

ATT&CK lookup starting points

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CVE-2018-3832 mapping review

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Vulnerability profileCVE Program record
Severity
Critical
CVSS
9.9 (3.0)
Known Exploited
No
Published

Vector: CVSS:3.0/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H

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
2Source 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
9.9CVSS 3.0CriticalCVSS:3.0/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H3.16Primary CVE score

Vulnerability scoring details

Base CVSS 3.0 score

9.9Critical
CVSS 3.0 vector shape for CVE-2018-3832Attack VectorAttack ComplexityPrivileges RequiredUser InteractionScopeConfidentiality ImpactIntegrity ImpactAvailability Impact

Vector: CVSS:3.0/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H

Attack Vector
NetworkAdjacentLocalPhysical
Attack Complexity
LowHigh
Privileges Required
NoneLowHigh
User Interaction
NoneRequired
Scope
ChangedUnchanged
Confidentiality Impact
HighLowNone
Integrity Impact
HighLowNone
Availability Impact
HighLowNone

Source materials

Affected products

Products and packages named in the record

VendorProductVersion / packageStatus
InsteonInsteonInsteon Hub 2245-222 - Firmware version 1013Listed
Weakness

CWE details

No CWE listed

CWE links open Glexia weakness intelligence pages with official CWE context, developer remediation guidance, and related CVE mappings.