CVE intelligence and bounded remediation

CVE-2020-18756 — Dcce Mac1100 Plc Firmware security vulnerability

High CVSS 7.5

An arbitrary memory access vulnerability in the EPA protocol of Dut Computer Control Engineering Co.'s PLC MAC1100 allows attackers to read the contents of any variable area.

Severity
High
CVSS
7.5 (3.1)
Published
2021-08-13
CISA KEV
Not currently listed
Ecosystem
operating-system
Weaknesses
CWE-125

Affected products

  • dcce / mac1100_plc_firmware

Matched remediation archetype

Buffer bounds, memory safety, and memory corruption

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

Check exposure

  • Identify affected native-code versions, build flags, architectures, parsers, codecs, drivers, and input paths in all shipped artifacts.
  • Determine whether untrusted data reaches the affected routine and the process privilege, sandbox, and network exposure.
  • Confirm statically linked, vendored, firmware, and platform-provided copies, not only package-manager records.

Remediate safely

  • Apply the maintained upstream correction or replace the affected component, then rebuild every dependent artifact from clean inputs.
  • Adopt bounds-checked interfaces, validated sizes and integer conversions, clear ownership, and memory-safe components where practical.
  • Enable supported compiler and runtime hardening and add sanitized tests and fuzz regression seeds derived from non-weaponized fixtures.

Authoritative sources

Complete CVE record and remediation plan

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