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CVE Record

CVE-2017-14438: Exploitable denial of service vulnerabilities exists in the Service Agent functionality of Moxa EDR-810 V4....

Exploitable denial of service vulnerabilities exists in the Service Agent functionality of Moxa EDR-810 V4.1 build 17030317. A specially crafted packet can cause a denial of service. An attacker can send a large packet to 4000/tcp to trigger this vulnerability.

HighCVSS 7.5Not KEV-listedUpdated
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Glexia's TakeAutomated analysishigh

Security readout for executives and security teams

Plain-English summary

CVE-2017-14438 can make a vulnerable Moxa EDR-810 device unavailable. An unauthenticated attacker who can reach TCP port 4000 can send an oversized or specially crafted packet that crashes or disrupts the Service Agent. The evidence points to availability impact, not data theft.

Executive priority

Treat this as high priority for exposed OT or perimeter-reachable devices because exploitation requires no credentials and can interrupt network security device availability. Priority is lower for isolated devices where TCP/4000 is tightly restricted.

Technical view

Talos describes an exploitable denial-of-service flaw in the Service Agent functionality of Moxa EDR-810 V4.1 build 17030317. The CVSS 3.0 vector is network reachable, low complexity, no privileges, no user interaction, unchanged scope, and high availability impact only.

Likely exposure

Exposure is most likely where Moxa EDR-810 V4.1 build 17030317 is deployed and TCP/4000 is reachable from untrusted networks. The source bundle does not establish broader affected versions, public internet prevalence, or cloud exposure.

Exploitation context

The source bundle says an attacker can trigger denial of service by sending a large packet to 4000/tcp. It does not show CISA KEV listing, active exploitation, public exploit maturity, or confirmed ransomware use.

Researcher notes

Affected scope in the provided sources is specific to Moxa EDR-810 V4.1 build 17030317. No CWE, patch version, or active exploitation evidence is provided. Avoid expanding affected products without additional vendor confirmation.

Mitigation direction

  • Identify any Moxa EDR-810 V4.1 build 17030317 devices.
  • Restrict TCP/4000 access to trusted management networks only.
  • Segment affected OT devices from user and internet-facing networks.
  • Check Moxa or Talos guidance for fixed firmware or vendor mitigations.
  • Monitor affected devices for Service Agent crashes or unexpected reboots.

Validation and detection

  • Confirm model, firmware version, and build from asset inventory.
  • Verify whether TCP/4000 is reachable from untrusted network zones.
  • Review firewall and ACL rules protecting device management services.
  • Check device logs and monitoring for availability failures.
  • Confirm remediation against vendor guidance before closing the finding.
Prepared
Confidence
high
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-2017-14438 mapping review

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Vulnerability profileCVE Program record
Severity
High
CVSS
7.5 (3.0)
Known Exploited
No
Published

Vector: CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/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
7.5CVSS 3.0HighCVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H3.93.6Primary CVE score

Vulnerability scoring details

Base CVSS 3.0 score

7.5High
CVSS 3.0 vector shape for CVE-2017-14438Attack VectorAttack ComplexityPrivileges RequiredUser InteractionScopeConfidentiality ImpactIntegrity ImpactAvailability Impact

Vector: CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/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
TalosMoxaMoxa EDR-810 V4.1 build 17030317Listed
Weakness

CWE details

No CWE listed

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