CVE intelligence and bounded remediation

CVE-2016-9154 — Siemens Desigo Web Module Pxa30-W0 Firmware security vulnerability

High CVSS 7.5

Siemens Desigo PX Web modules PXA40-W0, PXA40-W1, PXA40-W2 for Desigo PX automation controllers PXC00-E.D, PXC50-E.D, PXC100-E.D, PXC200-E.D (All firmware versions < V6.00.046) and Desigo PX Web modules PXA30-W0, PXA30-W1, PXA30-W2 for Desigo PX automation controllers PXC00-U, PXC64-U, PXC128-U (All firmware versions < V6.00.046) use a pseudo random number generator with insufficient entropy to generate certificates for HTTPS, potentially allowing remote attackers to reconstruct the corresponding private key.

Severity
High
CVSS
7.5 (3.0)
Published
2016-12-23
CISA KEV
Not currently listed
Ecosystem
software/application
Weaknesses
CWE-332

Affected products

  • siemens / desigo_web_module_pxa30-w0_firmware
  • siemens / desigo_web_module_pxa30-w1_firmware
  • siemens / desigo_web_module_pxa30-w2_firmware
  • siemens / desigo_web_module_pxa40-w0_firmware
  • siemens / desigo_web_module_pxa40-w1_firmware
  • siemens / desigo_web_module_pxa40-w2_firmware

Matched remediation archetype

General vulnerability remediation

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

Check exposure

  • Confirm the affected component, deployment paths, reachable interfaces, and enabled features from inventories and configuration, without probing production destructively.
  • Compare the advisory's affected conditions with the repository lockfiles, build manifests, artifacts, and runtime inventory.
  • Identify data sensitivity, trust boundaries, and privilege level for every confirmed affected deployment.

Remediate safely

  • Apply a vendor-supported fix or remove the affected component or feature; record the selected change and its source in the repository.
  • Update direct and transitive dependency locks, generated artifacts, deployment manifests, and asset inventories together.
  • Add a regression test for the documented unsafe condition using inert inputs and preserve rollback instructions.

Authoritative sources

Complete CVE record and remediation plan

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