CVE intelligence and bounded remediation

CVE-2019-9097 — Moxa Mb3170 Firmware security vulnerability

High CVSS 7.5

An issue was discovered on Moxa MGate MB3170 and MB3270 devices before 4.1, MB3280 and MB3480 devices before 3.1, MB3660 devices before 2.3, and MB3180 devices before 2.1. A high rate of transit traffic may cause a low-memory condition and a denial of service.

Severity
High
CVSS
7.5 (3.0)
Published
2020-03-11
CISA KEV
Not currently listed
Ecosystem
operating-system

Affected products

  • moxa / mb3170_firmware
  • moxa / mb3270_firmware
  • moxa / mb3180_firmware
  • moxa / mb3280_firmware
  • moxa / mb3480_firmware
  • moxa / mb3660_firmware

Matched remediation archetype

Resource exhaustion and denial of service

This catalog composition supplies bounded fallback guidance. Explicitly reviewed curated workflows load with the complete record below.

Check exposure

  • Identify attacker-influenced work factors including input size, nesting, compression, fan-out, regex cost, allocation, recursion, retries, and connection lifetime.
  • Map per-request and shared CPU, memory, disk, descriptor, thread, queue, and downstream-service limits.
  • Determine whether authentication, tenancy, quotas, and rate controls apply before expensive processing begins.

Remediate safely

  • Bound input size, nesting, expansion, work, concurrency, queue depth, retries, and execution time before resource-intensive processing.
  • Release resources on every success, error, cancellation, and timeout path and use backpressure instead of unbounded buffering.
  • Update affected components and add small deterministic tests that assert resource ceilings rather than exhausting a host.

Authoritative sources

Complete CVE record and remediation plan

The detailed catalog view below loads this exact record, its source evidence, and the full seven-phase agentic change plan.