CVE intelligence and bounded remediation

CVE-2018-13812 — Siemens Simatic Hmi Comfort Panels Firmware security vulnerability

High CVSS 7.5

A vulnerability has been identified in SIMATIC HMI Comfort Panels 4" - 22" (All versions < V15 Update 4), SIMATIC HMI Comfort Outdoor Panels 7" & 15" (All versions < V15 Update 4), SIMATIC HMI KTP Mobile Panels KTP400F, KTP700, KTP700F, KTP900 and KTP900F (All versions < V15 Update 4), SIMATIC WinCC Runtime Advanced (All versions < V15 Update 4), SIMATIC WinCC Runtime Professional (All versions < V15 Update 4), SIMATIC WinCC (TIA Portal) (All versions < V15 Update 4), SIMATIC HMI Classic Devices (TP/MP/OP/MP Mobile Panel) (All versions). A directory traversal vulnerability could allow to download arbitrary files from the device. The security vulnerability could be exploited by an attacker with network access to the integrated web server. No user interaction and no authentication is required to exploit the vulnerability. The vulnerability impacts the confidentiality of the device. At the time of advisory publication no public exploitation of this security vulnerability was known.

Severity
High
CVSS
7.5 (3.0)
Published
2018-12-13
CISA KEV
Not currently listed
Ecosystem
software/application
Weaknesses
CWE-22

Affected products

  • siemens / simatic_hmi_comfort_panels_firmware
  • siemens / simatic_hmi_comfort_outdoor_panels_firmware
  • siemens / simatic_hmi_ktp_mobile_panels_ktp400f_firmware
  • siemens / simatic_hmi_ktp_mobile_panels_ktp700_firmware
  • siemens / simatic_hmi_ktp_mobile_panels_ktp700f_firmware
  • siemens / simatic_hmi_ktp_mobile_panels_ktp900_firmware

Showing 6 representative product identities from 13 source matches. Confirm exact affected versions with the linked vendor and NVD evidence.

Matched remediation archetype

Path traversal, unsafe upload, and file handling

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Check exposure

  • Trace untrusted filenames, archive entries, URLs, and path segments into read, write, include, extraction, and upload operations.
  • Identify filesystem roots, mount permissions, symbolic-link behavior, archive handling, and whether uploaded content is web-accessible or executable.
  • Review canonicalization and containment checks across supported operating systems and storage backends.

Remediate safely

  • Generate server-side storage identifiers and resolve paths beneath a fixed root using filesystem-aware containment checks.
  • Reject absolute, parent-relative, alternate-separator, device, link, and archive entries that escape the intended root.
  • Store uploads outside executable or served paths, validate type and size, and use private atomic temporary files.

Authoritative sources

Complete CVE record and remediation plan

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