CVE intelligence and bounded remediation

CVE-2018-11461 — Siemens Sinumerik 808D V4.7 Firmware security vulnerability

Medium CVSS 6.6

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 local attacker with user privileges could use the service command application for privilege escalation to an elevated user but not root. 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
Medium
CVSS
6.6 (3.0)
Published
2018-12-12
CISA KEV
Not currently listed
Ecosystem
operating-system
Weaknesses
CWE-264

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

Privilege escalation and unsafe privilege management

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

Check exposure

  • Map service accounts, operating-system identities, roles, capabilities, impersonation, set-user transitions, and administrative helper paths.
  • Determine whether untrusted users or lower-privilege processes can reach the affected transition or modify inputs it trusts.
  • Review file, socket, registry, device, job, container, and cloud-role permissions used before and after privilege changes.

Remediate safely

  • Apply the supported fix and redesign privileged operations as a minimal, authenticated, allowlisted interface.
  • Drop privileges before processing untrusted input, verify the drop succeeds, and remove unnecessary roles, capabilities, and write permissions.
  • Validate ownership and permissions at time of use and add explicit lower-to-higher privilege boundary tests.

Authoritative sources

Complete CVE record and remediation plan

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