Authentication Bypass in Siemens Simatic Cp 44X 1 Redundant Network Access Modules (CVE-2017-6868)
Summary
Authentication bypass in Siemens Simatic Cp 44X 1 Redundant Network Access Modules (CVE-2017-6868). Successful exploitation can lead to full system takeover.
Original description
The description as published by the source.
An Improper Authentication issue was discovered in Siemens SIMATIC CP 44x-1 RNA, all versions prior to 1.4.1. An unauthenticated remote attacker may be able to perform administrative actions on the Communication Process (CP) of the RNA series module, if network access to Port 102/TCP is available and the configuration file for the CP is stored on the RNA's CPU.
Source: NIST National Vulnerability Database NVD
Auto-generated summary
Assembled by SecPulse from the source data (CVSS, CWE, affected versions) using templates — no AI involved. Check the original description and references below for exact details.
A vulnerability tracked as CVE-2017-6868 has been found in Siemens Simatic Cp 44X 1 Redundant Network Access Modules.
Successful exploitation can lead to full system takeover. CVSS score: 8.1/10.
What to do: apply the vendor's official patched release.
If unsure, ask your IT team or search "Siemens Simatic Cp 44X 1 Redundant Network Access Modules CVE-2017-6868" on the vendor's site.
CVE-2017-6868 (Siemens Simatic Cp 44X 1 Redundant Network Access Modules) — CWE-287 / CVSS v3 8.1
Attack vector: remote (network-reachable) / unauthenticated / no user interaction
Plan: 1) Audit SBOM/dependencies, 2) Stage→prod upgrade, 3) Add WAF/proxy monitoring on affected endpoints, 4) Hunt IOCs in logs.
Refs: see the GHSA / vendor advisory / patched release linked on this page.
Authentication bypass (CWE-287) exists in Siemens Simatic Cp 44X 1 Redundant Network Access Modules.
Check the vendor advisory for the affected versions of Siemens Simatic Cp 44X 1 Redundant Network Access Modules.
Severity: High (CVSS 8.1/10). Successful exploitation can lead to full system takeover.
Update to the patched release per vendor advisory.
Until the patch is applied: disable the affected feature, apply WAF rules, or restrict access via network ACLs.
Search webserver/proxy logs for unusual request patterns matching this CVE's known IOCs. Audit SBOM/dependencies to find affected services.
Response actions
Concrete steps and command examples for SOC/SRE teams to execute in order
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1Identify exposure identify
Audit SBOM/dependencies for affected components.資産台帳・SBOM・依存マニフェストで Siemens Simatic Cp 44X 1 Redundant Network Access Modules を使っているサービスとバージョンを洗い出す。
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2Post-deployment verification verify
Confirm patched version is live in productionパッチ適用後、ステージングで PoC または同等の悪用パターンを再現して脆弱性が閉じたことを確認。本番ではアクセスログ・WAF でアラート再発が無いか継続監視。
References
- advisory securityfocus.com
- advisory securitytracker.com
- advisory ics-cert.us-cert.gov
- web siemens.com