CVE intelligence and bounded remediation

CVE-2017-12738 — Siemens Sm-2556 Firmware security vulnerability

Medium CVSS 6.1

An issue was discovered on Siemens SICAM RTUs SM-2556 COM Modules with the firmware variants ENOS00, ERAC00, ETA2, ETLS00, MODi00, and DNPi00. The integrated web server (port 80/tcp) of the affected devices could allow Cross-Site Scripting (XSS) attacks if unsuspecting users are tricked into clicking on a malicious link.

Severity
Medium
CVSS
6.1 (3.0)
Published
2017-11-15
CISA KEV
Not currently listed
Ecosystem
operating-system
Weaknesses
CWE-79

Affected products

  • siemens / sm-2556_firmware / dnpi00
  • siemens / sm-2556_firmware / enos00
  • siemens / sm-2556_firmware / erac00
  • siemens / sm-2556_firmware / eta2
  • siemens / sm-2556_firmware / etls00
  • siemens / sm-2556_firmware / modi00

Matched remediation archetype

Cross-site scripting and unsafe browser output

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

Check exposure

  • Trace reflected, stored, and DOM-derived untrusted values into HTML, attributes, URLs, styles, scripts, and client-side template sinks.
  • Identify affected origins, authenticated user roles, sensitive browser capabilities, and where content is shared across tenants.
  • Review framework escaping, rich-text sanitization, legacy templates, and client-side rendering paths.

Remediate safely

  • Use context-aware framework output encoding and safe DOM APIs; keep untrusted data out of executable contexts.
  • Sanitize intentionally supported markup with a maintained allowlist policy and validate URLs and attributes separately.
  • Update affected rendering components and add tests for every output context using inert sentinel markup.

Authoritative sources

Complete CVE record and remediation plan

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