MediumCVE-2017-6865

    Siemens Primary Setup Tool (PST): Denial of Service (CVE-2017-6865)

    Published Sources: CVE.org

    What is affected, what to do

    A vulnerability has been identified in Primary Setup Tool (PST) (All versions < V4.2 HF1), SIMATIC Automation Tool (All versions < V3.0), SIMATIC NET PC-Software (All versions < V14 SP1), SIMATIC PCS 7 V8.1 (All versions), SIMATIC PCS 7 V8.2 (All versions < V8.2 SP1), SIMATIC STEP 7 (TIA Portal) V13 (All versions < V13 SP2), SIMATIC STEP 7 (TIA Portal) V14 (All versions < V14 SP1), SIMATIC STEP 7 V5.X (All versions < V5.6), SIMATIC WinAC RTX 2010 SP2 (All versions), SIMATIC WinAC RTX F 2010 SP2 (All versions), SIMATIC WinCC (TIA Portal) V13 (All versions < V13 SP2), SIMATIC WinCC (TIA Portal) V14 (All versions < V14 SP1), SIMATIC WinCC V7.2 and prior (All versions), SIMATIC WinCC V7.3 (All versions < V7.3 Update 15), SIMATIC WinCC V7.4 (All versions < V7.4 SP1 Upd1), SIMATIC WinCC flexible 2008 (All versions < flexible 2008 SP5), SINAUT ST7CC (All versions installed in conjunction with SIMATIC WinCC < V7.3 Update 15), SINEMA Server (All versions < V14), SINUMERIK 808D Programming Tool (All versions < V4.7 SP4 HF2), SMART PC Access (All versions < V2.3), STEP 7 - Micro/WIN SMART (All versions < V2.3), Security Configuration Tool (SCT) (All versions < V5.0). Specially crafted PROFINET DCP broadcast packets sent to the affected products on a local Ethernet segment (Layer 2) could cause a Denial-of-Service condition of some services.

    The available sources name no fixed version. Check the vendor guidance in the references below.

    Affected
    • Siemens Primary Setup Tool (PST) eq All versions < V4.2 HF1..All versions < V4.2 HF1
    • Siemens SIMATIC Automation Tool eq All versions < V3.0..All versions < V3.0
    • Siemens SIMATIC NET PC-Software eq All versions < V14 SP1..All versions < V14 SP1
    • Siemens SIMATIC PCS 7 V8.1 eq All versions..All versions
    • Siemens SIMATIC PCS 7 V8.2 eq All versions < V8.2 SP1..All versions < V8.2 SP1
    • Siemens SIMATIC STEP 7 (TIA Portal) V13 eq All versions < V13 SP2..All versions < V13 SP2
    • Siemens SIMATIC STEP 7 (TIA Portal) V14 eq All versions < V14 SP1..All versions < V14 SP1
    • Siemens SIMATIC STEP 7 V5.X eq All versions < V5.6..All versions < V5.6
    • Siemens SIMATIC WinAC RTX 2010 SP2 eq All versions..All versions
    • Siemens SIMATIC WinAC RTX F 2010 SP2 eq All versions..All versions
    • Siemens SIMATIC WinCC (TIA Portal) V13 eq All versions < V13 SP2..All versions < V13 SP2
    • Siemens SIMATIC WinCC (TIA Portal) V14 eq All versions < V14 SP1..All versions < V14 SP1
    • Siemens SIMATIC WinCC V7.2 and prior eq All versions..All versions
    • Siemens SIMATIC WinCC V7.3 eq All versions < V7.3 Update 15..All versions < V7.3 Update 15
    • Siemens SIMATIC WinCC V7.4 eq All versions < V7.4 SP1 Upd1..All versions < V7.4 SP1 Upd1
    • Siemens SIMATIC WinCC flexible 2008 eq All versions < flexible 2008 SP5..All versions < flexible 2008 SP5
    • Siemens SINAUT ST7CC eq All versions installed in conjunction with SIMATIC WinCC < V7.3 Update 15..All versions installed in conjunction with SIMATIC WinCC < V7.3 Update 15
    • Siemens SINEMA Server eq All versions < V14..All versions < V14
    • Siemens SINUMERIK 808D Programming Tool eq All versions < V4.7 SP4 HF2..All versions < V4.7 SP4 HF2
    • Siemens SMART PC Access eq All versions < V2.3..All versions < V2.3
    • Siemens STEP 7 - Micro/WIN SMART eq All versions < V2.3..All versions < V2.3
    • Siemens Security Configuration Tool (SCT) eq All versions < V5.0..All versions < V5.0

    Not sure whether and how you are affected? Ask a question about this vulnerability

    Metrics

    6.5

    Priority

    XIEM Effective CVSS: highest available CVSS rating from NVD and vendor data.

    Source: NVD, CVSS v3

    6.5

    CVSS v3

    Severity Medium on the scale from 0 to 10.

    Source: CVE.org

    0.5 %

    EPSS score

    Low — model estimates < 1% exploitation likelihood.

    Source: FIRST EPSS, percentile 40.5

    Show all metrics
    Severity
    Medium
    Priority (0–325)

    The priority score is a consolidated metric that condenses several individual signals into a single, action-guiding ranking: technical severity (CVSS), exploitation likelihood (EPSS), known-exploited status (KEV) and the context of the affected asset. The aim is to answer the only truly important question in vulnerability management: what first?

    Read in glossary
    45.65 Methodology
    Exploit maturity

    An exploit is code or a technique that specifically uses a concrete vulnerability to force unintended behaviour — such as executing code or escalating privileges. It is the tool that turns a theoretical flaw into a practical attack.

    Read in glossary
    no public PoC known
    XIEM Effective CVSS

    XIEM® is the tiered managed-security operating model from NEOSEC and a registered trademark of NEOSEC GmbH. It extends classic SIEM — the central collection, normalisation and correlation of security-relevant events — with endpoint forensics, network visibility and deception technology, and consolidates them into three building tiers: Sentry, Orchestrate and Command.

    Read in glossary
    6.5 Methodology
    CVSS v3

    CVSS is the globally established, open standard for assessing the technical severity of a vulnerability on a scale from 0 to 10. It describes how easily a flaw can be exploited and what damage it can cause — but not how likely its actual exploitation is. CVSS and the complementary EPSS deliberately answer different questions.

    Read in glossary
    6.5
    EPSS score

    The EPSS score is the absolute model output for an individual vulnerability: the estimated probability of real-world exploitation within the next 30 days, expressed as a value between 0 and 1 (i.e. 0 % to 100 %). A score of 0.42 means „the model estimates a 42 % chance of real-world exploitation within 30 days“.

    Read in glossary
    0.5 %
    Low — model estimates < 1% exploitation likelihood.
    EPSS percentile

    The EPSS percentile is the relative position of a vulnerability within all EPSS-scored CVEs, expressed as a value between 0 and 1. A percentile of 0.90 means „this CVE has a higher EPSS score than 90 % of all other scored CVEs“. Unlike the EPSS score, it is not a probability — but a positioning within a ranking.

    Read in glossary
    40.5
    High — this CVE ranks above the median of all CVEs scored today (rank ≥ 36%).
    KEV status

    The KEV catalogue is a list maintained by the US authority CISA of vulnerabilities for which active exploitation in the wild has been confirmed. It answers not the question „how severe?“ but „is it already being attacked?“ — thereby sharply prioritising patching.

    Read in glossary
    —
    Published

    Detection rules

    No NEOSEC detection rule is available for this vulnerability yet.

    Classification under NIS2 and CRA

    Rule-based classification from exploitation status and severity. It does not replace a case-by-case assessment.

    NIS2

    NIS2 is EU Directive (EU) 2022/2555 to raise the level of cybersecurity across the Union. It substantially broadens obligations compared with the first NIS directive: more sectors, mandatory risk management, staged reporting duties and personal accountability of senior management.

    Read in glossary
    Handle the vulnerability in regular vulnerability handling under Art. 21(2)(e) NIS2.
    CRA

    The CRA is EU Regulation (EU) 2024/2847 setting horizontal cybersecurity requirements for „products with digital elements“ — from industrial controllers and software to connected consumer devices. For the first time manufacturers must ensure security across the entire product lifecycle, handle vulnerabilities and provide security updates.

    Read in glossary
    From 11.12.2027, Annex I Part II CRA requires manufacturers of affected products with digital elements to handle vulnerabilities without delay and provide security updates.
    ISO/IEC 27001

    ISO/IEC 27001 is the internationally leading standard for an information security management system (ISMS). It describes a risk-based, process-oriented framework to systematically plan, implement, review and improve information security.

    Read in glossary
    Control A.8.8, management of technical vulnerabilities: assess relevance to your systems, plan remediation and keep evidence.

    Description

    A vulnerability has been identified in Primary Setup Tool (PST) (All versions < V4.2 HF1), SIMATIC Automation Tool (All versions < V3.0), SIMATIC NET PC-Software (All versions < V14 SP1), SIMATIC PCS 7 V8.1 (All versions), SIMATIC PCS 7 V8.2 (All versions < V8.2 SP1), SIMATIC STEP 7 (TIA Portal) V13 (All versions < V13 SP2), SIMATIC STEP 7 (TIA Portal) V14 (All versions < V14 SP1), SIMATIC STEP 7 V5.X (All versions < V5.6), SIMATIC WinAC RTX 2010 SP2 (All versions), SIMATIC WinAC RTX F 2010 SP2 (All versions), SIMATIC WinCC (TIA Portal) V13 (All versions < V13 SP2), SIMATIC WinCC (TIA Portal) V14 (All versions < V14 SP1), SIMATIC WinCC V7.2 and prior (All versions), SIMATIC WinCC V7.3 (All versions < V7.3 Update 15), SIMATIC WinCC V7.4 (All versions < V7.4 SP1 Upd1), SIMATIC WinCC flexible 2008 (All versions < flexible 2008 SP5), SINAUT ST7CC (All versions installed in conjunction with SIMATIC WinCC < V7.3 Update 15), SINEMA Server (All versions < V14), SINUMERIK 808D Programming Tool (All versions < V4.7 SP4 HF2), SMART PC Access (All versions < V2.3), STEP 7 - Micro/WIN SMART (All versions < V2.3), Security Configuration Tool (SCT) (All versions < V5.0). Specially crafted PROFINET DCP broadcast packets sent to the affected products on a local Ethernet segment (Layer 2) could cause a Denial-of-Service condition of some services. The services require manual restart to recover.

    Source: cvelistv5, NVD (NIST)

    Affected products

    The following versions are affected. Older releases of the same product line are also vulnerable unless stated otherwise.

    Affected products
    Affected versionsFixed in
    Siemens AGPrimary Setup Tool (PST)
    • All versions < V4.2 HF1
    • —
    Siemens AGSecurity Configuration Tool (SCT)
    • All versions < V5.0
    • —
    Siemens AGSIMATIC Automation Tool
    • All versions < V3.0
    • —
    Siemens AGSIMATIC NET PC-Software
    • All versions < V14 SP1
    • —
    Siemens AGSIMATIC PCS 7 V8.1
    • All versions
    • —
    Siemens AGSIMATIC PCS 7 V8.2
    • All versions < V8.2 SP1
    • —
    Siemens AGSIMATIC STEP 7 (TIA Portal) V13
    • All versions < V13 SP2
    • —
    Siemens AGSIMATIC STEP 7 (TIA Portal) V14
    • All versions < V14 SP1
    • —
    Siemens AGSIMATIC STEP 7 V5.X
    • All versions < V5.6
    • —
    Siemens AGSIMATIC WinAC RTX 2010 SP2
    • All versions
    • —
    Siemens AGSIMATIC WinAC RTX F 2010 SP2
    • All versions
    • —
    Siemens AGSIMATIC WinCC (TIA Portal) V13
    • All versions < V13 SP2
    • —
    Siemens AGSIMATIC WinCC (TIA Portal) V14
    • All versions < V14 SP1
    • —
    Siemens AGSIMATIC WinCC flexible 2008
    • All versions < flexible 2008 SP5
    • —
    Siemens AGSIMATIC WinCC V7.2 and prior
    • All versions
    • —
    Siemens AGSIMATIC WinCC V7.3
    • All versions < V7.3 Update 15
    • —
    Siemens AGSIMATIC WinCC V7.4
    • All versions < V7.4 SP1 Upd1
    • —
    Siemens AGSINAUT ST7CC
    • All versions installed in conjunction with SIMATIC WinCC < V7.3 Update 15
    • —
    Siemens AGSINEMA Server
    • All versions < V14
    • —
    Siemens AGSINUMERIK 808D Programming Tool
    • All versions < V4.7 SP4 HF2
    • —
    Siemens AGSMART PC Access
    • All versions < V2.3
    • —
    Siemens AGSTEP 7 - Micro/WIN SMART
    • All versions < V2.3
    • —
    siemenspcs_7
    • —
    • —
    siemensprimary_setup_tool
    • —
    • —
    siemenssecurity_configuration_tool
    • —
    • —
    siemenssimatic_automation_tool
    • —
    • —
    siemenssimatic_net_pc-software
    • —
    • —
    siemenssimatic_step_7_\(tia_portal\)
    • 5.0
    • 14.0
    • 13.0
    • —
    • —
    • —
    siemenssimatic_step_7_micro\/win_smart
    • —
    • —
    siemenssimatic_winac_rtx_2010
    • —
    • —
    siemenssimatic_winac_rtx_f_2010
    • —
    • —
    siemenssimatic_wincc
    • —
    • —
    siemenssimatic_wincc_\(tia_portal\)
    • 14.0
    • 13.0
    • —
    • —
    siemenssimatic_wincc_flexible_2008
    • —
    • —
    siemenssinaut_st7cc
    • —
    • —
    siemenssinema_server
    • —
    • —
    siemenssinumerik_808d_programming_tool
    • —
    • —
    siemenssmart_pc_access
    • 2.0
    • —

    Vendors and products

    References & sources

    Embed badge

    Show the severity and KEV status of this vulnerability on your site – with a link back here. The image is updated hourly.

    Badge preview for CVE-2017-6865
    <a href="https://intel.neosec.eu/en/cve/CVE-2017-6865"><img src="https://intel.neosec.eu/badge/cve/CVE-2017-6865.svg?lang=en" alt="CVE-2017-6865 – NEOSEC Intel" height="20"></a>