CVE intelligence and bounded remediation

CVE-2018-11463 — Siemens Sinumerik 808D V4.7 Firmware security vulnerability

High CVSS 7.8

A vulnerability has been identified in SINUMERIK 808D V4.7 (All versions), SINUMERIK 808D V4.8 (All versions), SINUMERIK 828D V4.7 (All versions < V4.7 SP6 HF1), SINUMERIK 840D sl V4.7 (All versions < V4.7 SP6 HF5), SINUMERIK 840D sl V4.8 (All versions < V4.8 SP3). A buffer overflow in the service command application could allow a local attacker to execute code with elevated privileges. The security vulnerability could be exploited by an attacker with local access to the affected systems. Successful exploitation requires user privileges but no user interaction. The vulnerability could allow an attacker to compromise confidentiality, integrity and availability of the system. At the time of advisory publication no public exploitation of this security vulnerability was known.

Severity
High
CVSS
7.8 (3.0)
Published
2018-12-12
CISA KEV
Not currently listed
Ecosystem
operating-system
Weaknesses
CWE-121, CWE-119

Affected products

  • siemens / sinumerik_808d_v4.7_firmware
  • siemens / sinumerik_808d_v4.8_firmware
  • siemens / sinumerik_828d_v4.7_firmware
  • siemens / sinumerik_840d_sl_v4.7_firmware
  • siemens / sinumerik_840d_sl_v4.8_firmware

Matched remediation archetype

Buffer bounds, memory safety, and memory corruption

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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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