HighCVE-2019-6568

    Siemens SIMATIC CP 1604: Out-of-bounds Read (CVE-2019-6568)

    Published Sources: CVE.org

    What is affected, what to do

    The webserver of the affected devices contains a vulnerability that may lead to a denial of service condition. An attacker may cause a denial of service situation which leads to a restart of the webserver of the affected device.

    Update simatic_ipc_diagmonitor to version 5.1.3, simatic_s7-1500_software_controller to version 2.7, simatic_s7-plcsim_advanced to version 2.0.

    Affected
    • Siemens SIMATIC CP 1604 eq All versions..All versions
    • Siemens SIMATIC CP 1616 eq All versions..All versions
    • Siemens SIMATIC CP 343-1 Advanced eq All versions..All versions
    • Siemens SIMATIC CP 443-1 eq All versions < V3.3..All versions < V3.3
    • Siemens SIMATIC CP 443-1 Advanced eq All versions < V3.3..All versions < V3.3
    • Siemens SIMATIC CP 443-1 OPC UA eq All versions..All versions
    • Siemens SIMATIC ET 200pro IM154-8 PN/DP CPU eq All versions < V3.2.16..All versions < V3.2.16
    • Siemens SIMATIC ET 200pro IM154-8F PN/DP CPU eq All versions < V3.2.16..All versions < V3.2.16
    • Siemens SIMATIC ET 200pro IM154-8FX PN/DP CPU eq All versions < V3.2.16..All versions < V3.2.16
    • Siemens SIMATIC ET 200S IM151-8 PN/DP CPU eq All versions < V3.2.16..All versions < V3.2.16
    • Siemens SIMATIC ET 200S IM151-8F PN/DP CPU eq All versions < V3.2.16..All versions < V3.2.16
    • Siemens SIMATIC ET 200SP Open Controller CPU 1515SP PC (incl. SIPLUS variants) eq All versions < V2.1.6..All versions < V2.1.6
    • Siemens SIMATIC ET 200SP Open Controller CPU 1515SP PC2 (incl. SIPLUS variants) eq All versions < V2.7..All versions < V2.7
    • Siemens SIMATIC HMI Comfort Outdoor Panels 7" & 15" (incl. SIPLUS variants) eq All versions < V15.1 Upd4..All versions < V15.1 Upd4
    • Siemens SIMATIC HMI Comfort Panels 4" - 22" (incl. SIPLUS variants) eq All versions < V15.1 Upd4..All versions < V15.1 Upd4
    • Siemens SIMATIC HMI KTP Mobile Panels KTP400F, KTP700, KTP700F, KTP900 and KTP900F eq All versions < V15.1 Upd4..All versions < V15.1 Upd4
    • Siemens SIMATIC IPC DiagMonitor eq All versions < V5.1.3..All versions < V5.1.3
    • Siemens SIMATIC RF182C eq All versions..All versions
    • Siemens SIMATIC RF185C eq All versions < V1.1.0..All versions < V1.1.0
    • Siemens SIMATIC RF186C eq All versions < V1.1.0..All versions < V1.1.0
    • Siemens SIMATIC RF188C eq All versions < V1.1.0..All versions < V1.1.0
    • Siemens SIMATIC RF600R family eq All versions < V3.2.1..All versions < V3.2.1
    • Siemens SIMATIC RFID 181EIP eq All versions..All versions
    • Siemens SIMATIC S7-1500 CPU family (incl. related ET200 CPUs and SIPLUS variants) eq All versions < V2.6.1..All versions < V2.6.1
    • Siemens SIMATIC S7-1500 Software Controller eq All versions < V2.7..All versions < V2.7
    • Siemens SIMATIC S7-300 CPU 314C-2 PN/DP eq All versions < V3.3.16..All versions < V3.3.16
    • Siemens SIMATIC S7-300 CPU 315-2 PN/DP eq All versions < V3.2.16..All versions < V3.2.16
    • Siemens SIMATIC S7-300 CPU 315F-2 PN/DP eq All versions < V3.2.16..All versions < V3.2.16
    • Siemens SIMATIC S7-300 CPU 315T-3 PN/DP eq All versions < V3.2.16..All versions < V3.2.16
    • Siemens SIMATIC S7-300 CPU 317-2 PN/DP eq All versions < V3.2.16..All versions < V3.2.16
    • Siemens SIMATIC S7-300 CPU 317F-2 PN/DP eq All versions < V3.2.16..All versions < V3.2.16
    • Siemens SIMATIC S7-300 CPU 317T-3 PN/DP eq All versions < V3.2.16..All versions < V3.2.16
    • Siemens SIMATIC S7-300 CPU 317TF-3 PN/DP eq All versions < V3.2.16..All versions < V3.2.16
    • Siemens SIMATIC S7-300 CPU 319-3 PN/DP eq All versions < V3.2.16..All versions < V3.2.16
    • Siemens SIMATIC S7-300 CPU 319F-3 PN/DP eq All versions < V3.2.16..All versions < V3.2.16
    • Siemens SIMATIC S7-400 PN/DP V6 and below CPU family (incl. SIPLUS variants) eq All versions..All versions
    • Siemens SIMATIC S7-400 PN/DP V7 CPU family (incl. SIPLUS variants) eq All versions..All versions
    • Siemens SIMATIC S7-PLCSIM Advanced eq All versions < V2.0 SP1 UPD1..All versions < V2.0 SP1 UPD1
    • Siemens SIMATIC Teleservice Adapter IE Advanced eq All versions..All versions
    • Siemens SIMATIC Teleservice Adapter IE Basic eq All versions..All versions
    • Siemens SIMATIC Teleservice Adapter IE Standard eq All versions..All versions
    • Siemens SIMATIC WinAC RTX 2010 eq All versions < V2010 SP3..All versions < V2010 SP3
    • Siemens SIMATIC WinAC RTX F 2010 eq All versions < V2010 SP3..All versions < V2010 SP3
    • Siemens SIMATIC WinCC Runtime Advanced eq All versions < V15.1 Upd4..All versions < V15.1 Upd4
    • Siemens SIMOCODE pro V Ethernet/IP (incl. SIPLUS variants) eq All versions < V1.1.3..All versions < V1.1.3
    • Siemens SIMOCODE pro V PROFINET (incl. SIPLUS variants) eq All versions < V2.1.3..All versions < V2.1.3
    • Siemens SINAMICS G130 V4.6 Control Unit eq All versions..All versions
    • Siemens SINAMICS G130 V4.7 Control Unit eq All versions..All versions
    • Siemens SINAMICS G130 V4.7 SP1 Control Unit eq All versions..All versions
    • Siemens SINAMICS G130 V4.8 Control Unit eq All versions < V4.8 HF6..All versions < V4.8 HF6
    • Siemens SINAMICS G130 V5.1 Control Unit eq All versions..All versions
    • Siemens SINAMICS G130 V5.1 SP1 Control Unit eq All versions < V5.1 SP1 HF4..All versions < V5.1 SP1 HF4
    • Siemens SINAMICS G150 V4.6 Control Unit eq All versions..All versions
    • Siemens SINAMICS G150 V4.7 Control Unit eq All versions..All versions
    • Siemens SINAMICS G150 V4.7 SP1 Control Unit eq All versions..All versions
    • Siemens SINAMICS G150 V4.8 Control Unit eq All versions < V4.8 HF6..All versions < V4.8 HF6
    • Siemens SINAMICS G150 V5.1 Control Unit eq All versions..All versions
    • Siemens SINAMICS G150 V5.1 SP1 Control Unit eq All versions < V5.1 SP1 HF4..All versions < V5.1 SP1 HF4
    • Siemens SINAMICS GH150 V4.7 (Control Unit) eq All versions..All versions
    • Siemens SINAMICS GH150 V4.8 (Control Unit) eq All versions < V4.8 SP2 HF9..All versions < V4.8 SP2 HF9
    • Siemens SINAMICS GL150 V4.7 (Control Unit) eq All versions..All versions
    • Siemens SINAMICS GL150 V4.8 (Control Unit) eq All versions < V4.8 SP2 HF9..All versions < V4.8 SP2 HF9
    • Siemens SINAMICS GM150 V4.7 (Control Unit) eq All versions..All versions
    • Siemens SINAMICS GM150 V4.8 (Control Unit) eq All versions < V4.8 SP2 HF9..All versions < V4.8 SP2 HF9
    • Siemens SINAMICS S120 V4.6 Control Unit (incl. SIPLUS variants) eq All versions..All versions
    • Siemens SINAMICS S120 V4.7 Control Unit (incl. SIPLUS variants) eq All versions..All versions
    • Siemens SINAMICS S120 V4.7 SP1 Control Unit (incl. SIPLUS variants) eq All versions..All versions
    • Siemens SINAMICS S120 V4.8 Control Unit (incl. SIPLUS variants) eq All versions < V4.8 HF6..All versions < V4.8 HF6
    • Siemens SINAMICS S120 V5.1 Control Unit (incl. SIPLUS variants) eq All versions..All versions
    • Siemens SINAMICS S120 V5.1 SP1 Control Unit (incl. SIPLUS variants) eq All versions < V5.1 SP1 HF4..All versions < V5.1 SP1 HF4
    • Siemens SINAMICS S150 V4.6 Control Unit eq All versions..All versions
    • Siemens SINAMICS S150 V4.7 Control Unit eq All versions..All versions
    • Siemens SINAMICS S150 V4.7 SP1 Control Unit eq All versions..All versions
    • Siemens SINAMICS S150 V4.8 Control Unit eq All versions < V4.8 HF6..All versions < V4.8 HF6
    • Siemens SINAMICS S150 V5.1 Control Unit eq All versions..All versions
    • Siemens SINAMICS S150 V5.1 SP1 Control Unit eq All versions < V5.1 SP1 HF4..All versions < V5.1 SP1 HF4
    • Siemens SINAMICS S210 eq All versions < V5.1 SP1 HF8..All versions < V5.1 SP1 HF8
    • Siemens SINAMICS SL150 V4.7 (Control Unit) eq All versions < V4.7 HF33..All versions < V4.7 HF33
    • Siemens SINAMICS SL150 V4.8 (Control Unit) eq All versions..All versions
    • Siemens SINAMICS SM120 V4.7 (Control Unit) eq All versions..All versions
    • Siemens SINAMICS SM120 V4.8 (Control Unit) eq All versions < V4.8 SP2 HF10..All versions < V4.8 SP2 HF10
    • Siemens SINAMICS SM150 V4.8 (Control Unit) eq All versions..All versions
    • Siemens SIPLUS ET 200S IM151-8 PN/DP CPU eq All versions < V3.2.16..All versions < V3.2.16
    • Siemens SIPLUS ET 200S IM151-8F PN/DP CPU eq All versions < V3.2.16..All versions < V3.2.16
    • Siemens SIPLUS NET CP 343-1 Advanced eq All versions..All versions
    • Siemens SIPLUS NET CP 443-1 eq All versions < V3.3..All versions < V3.3
    • Siemens SIPLUS NET CP 443-1 Advanced eq All versions < V3.3..All versions < V3.3
    • Siemens SIPLUS S7-300 CPU 314C-2 PN/DP eq All versions < V3.3.16..All versions < V3.3.16
    • Siemens SIPLUS S7-300 CPU 315-2 PN/DP eq All versions < V3.2.16..All versions < V3.2.16
    • Siemens SIPLUS S7-300 CPU 315F-2 PN/DP eq All versions < V3.2.16..All versions < V3.2.16
    • Siemens SIPLUS S7-300 CPU 317-2 PN/DP eq All versions < V3.2.16..All versions < V3.2.16
    • Siemens SIPLUS S7-300 CPU 317F-2 PN/DP eq All versions < V3.2.16..All versions < V3.2.16
    • Siemens SITOP Manager eq All versions < V1.1..All versions < V1.1
    • Siemens SITOP PSU8600 eq All versions < V1.5..All versions < V1.5
    • Siemens SITOP UPS1600 (incl. SIPLUS variants) eq All versions < V2.3..All versions < V2.3
    • Siemens TIM 1531 IRC (incl. SIPLUS NET variants) eq All versions < V2.1..All versions < V2.1

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

    Metrics

    7.5

    Priority

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

    Source: Vendor (CNA), CVSS v3

    7.5

    CVSS v3

    Severity High on the scale from 0 to 10.

    Source: CVE.org

    1.4 %

    EPSS score

    Moderate — model estimates 1-10% exploitation likelihood.

    Source: FIRST EPSS, percentile 72.4

    Show all metrics
    Severity
    High
    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
    79.48 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
    7.5 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
    7.5
    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
    1.4 %
    Moderate — model estimates 1-10% 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
    72.4
    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
    CISA assessment (SSVC)
    Exploitation: none known · automatable · Technical impact: partial
    Source: CISA Vulnrichment, as of 3 June 2026
    CWE

    CWE is a catalogue of typical weakness types in software and hardware — such as flawed input validation, unsafe memory handling or poor authentication. Where a CVE names a concrete vulnerability in a concrete product, a CWE describes the underlying class of defect.

    Read in glossary
    CWE-125

    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
    High technical severity: assess and remediate the vulnerability in vulnerability handling under Art. 21(2)(e) NIS2 and document the decision.
    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

    The webserver of the affected devices contains a vulnerability that may lead to a denial of service condition. An attacker may cause a denial of service situation which leads to a restart of the webserver of the affected device. The security vulnerability could be exploited by an attacker with network access to the affected systems. Successful exploitation requires no system privileges and no user interaction. An attacker could use the vulnerability to compromise availability of the device.

    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
    SiemensSIMATIC CP 1604
    • All versions
    • —
    SiemensSIMATIC CP 1616
    • All versions
    • —
    SiemensSIMATIC CP 343-1 Advanced
    • All versions
    • —
    SiemensSIMATIC CP 443-1
    • All versions < V3.3
    • —
    SiemensSIMATIC CP 443-1 Advanced
    • All versions < V3.3
    • —
    SiemensSIMATIC CP 443-1 OPC UA
    • All versions
    • —
    SiemensSIMATIC ET 200pro IM154-8 PN/DP CPU
    • All versions < V3.2.16
    • —
    SiemensSIMATIC ET 200pro IM154-8F PN/DP CPU
    • All versions < V3.2.16
    • —
    SiemensSIMATIC ET 200pro IM154-8FX PN/DP CPU
    • All versions < V3.2.16
    • —
    SiemensSIMATIC ET 200S IM151-8 PN/DP CPU
    • All versions < V3.2.16
    • —
    SiemensSIMATIC ET 200S IM151-8F PN/DP CPU
    • All versions < V3.2.16
    • —
    SiemensSIMATIC ET 200SP Open Controller CPU 1515SP PC (incl. SIPLUS variants)
    • All versions < V2.1.6
    • —
    SiemensSIMATIC ET 200SP Open Controller CPU 1515SP PC2 (incl. SIPLUS variants)
    • All versions < V2.7
    • —
    SiemensSIMATIC HMI Comfort Outdoor Panels 7" & 15" (incl. SIPLUS variants)
    • All versions < V15.1 Upd4
    • —
    SiemensSIMATIC HMI Comfort Panels 4" - 22" (incl. SIPLUS variants)
    • All versions < V15.1 Upd4
    • —
    SiemensSIMATIC HMI KTP Mobile Panels KTP400F, KTP700, KTP700F, KTP900 and KTP900F
    • All versions < V15.1 Upd4
    • —
    SiemensSIMATIC IPC DiagMonitor
    • All versions < V5.1.3
    • —
    SiemensSIMATIC RF182C
    • All versions
    • —
    SiemensSIMATIC RF185C
    • All versions < V1.1.0
    • —
    SiemensSIMATIC RF186C
    • All versions < V1.1.0
    • —
    SiemensSIMATIC RF188C
    • All versions < V1.1.0
    • —
    SiemensSIMATIC RF600R family
    • All versions < V3.2.1
    • —
    SiemensSIMATIC RFID 181EIP
    • All versions
    • —
    SiemensSIMATIC S7-1500 CPU family (incl. related ET200 CPUs and SIPLUS variants)
    • All versions < V2.6.1
    • —
    SiemensSIMATIC S7-1500 Software Controller
    • All versions < V2.7
    • —
    SiemensSIMATIC S7-300 CPU 314C-2 PN/DP
    • All versions < V3.3.16
    • —
    SiemensSIMATIC S7-300 CPU 315-2 PN/DP
    • All versions < V3.2.16
    • —
    SiemensSIMATIC S7-300 CPU 315F-2 PN/DP
    • All versions < V3.2.16
    • —
    SiemensSIMATIC S7-300 CPU 315T-3 PN/DP
    • All versions < V3.2.16
    • —
    SiemensSIMATIC S7-300 CPU 317-2 PN/DP
    • All versions < V3.2.16
    • —
    SiemensSIMATIC S7-300 CPU 317F-2 PN/DP
    • All versions < V3.2.16
    • —
    SiemensSIMATIC S7-300 CPU 317T-3 PN/DP
    • All versions < V3.2.16
    • —
    SiemensSIMATIC S7-300 CPU 317TF-3 PN/DP
    • All versions < V3.2.16
    • —
    SiemensSIMATIC S7-300 CPU 319-3 PN/DP
    • All versions < V3.2.16
    • —
    SiemensSIMATIC S7-300 CPU 319F-3 PN/DP
    • All versions < V3.2.16
    • —
    SiemensSIMATIC S7-400 PN/DP V6 and below CPU family (incl. SIPLUS variants)
    • All versions
    • —
    SiemensSIMATIC S7-400 PN/DP V7 CPU family (incl. SIPLUS variants)
    • All versions
    • —
    SiemensSIMATIC S7-PLCSIM Advanced
    • All versions < V2.0 SP1 UPD1
    • —
    SiemensSIMATIC Teleservice Adapter IE Advanced
    • All versions
    • —
    SiemensSIMATIC Teleservice Adapter IE Basic
    • All versions
    • —
    SiemensSIMATIC Teleservice Adapter IE Standard
    • All versions
    • —
    SiemensSIMATIC WinAC RTX 2010
    • All versions < V2010 SP3
    • —
    SiemensSIMATIC WinAC RTX F 2010
    • All versions < V2010 SP3
    • —
    SiemensSIMATIC WinCC Runtime Advanced
    • All versions < V15.1 Upd4
    • —
    SiemensSIMOCODE pro V Ethernet/IP (incl. SIPLUS variants)
    • All versions < V1.1.3
    • —
    SiemensSIMOCODE pro V PROFINET (incl. SIPLUS variants)
    • All versions < V2.1.3
    • —
    SiemensSINAMICS G130 V4.6 Control Unit
    • All versions
    • —
    SiemensSINAMICS G130 V4.7 Control Unit
    • All versions
    • —

    Vendors and products

    Affected operating systems

    Affected operating systems
    Othersiemenscp1604_firmware—
    Othersiemenscp1616_firmware—
    Othersiemenssimatic_cp343-1_advanced_firmware—
    Othersiemenssimatic_cp443-1_advanced_firmware—
    Othersiemenssimatic_cp443-1_firmware—
    Othersiemenssimatic_et_200_sp_open_controller_cpu_1515sp_pc2_firmware—
    Othersiemenssimatic_et_200_sp_open_controller_cpu_1515sp_pc_firmware—
    Othersiemenssimatic_hmi_comfort_outdoor_panels_firmware15.1
    Othersiemenssimatic_hmi_comfort_outdoor_panels_firmware—
    Othersiemenssimatic_hmi_comfort_panels_firmware15.1
    Othersiemenssimatic_hmi_comfort_panels_firmware—
    Othersiemenssimatic_hmi_ktp_mobile_panels_ktp400f_firmware15.1
    Othersiemenssimatic_hmi_ktp_mobile_panels_ktp400f_firmware—
    Othersiemenssimatic_hmi_ktp_mobile_panels_ktp700_firmware15.1
    Othersiemenssimatic_hmi_ktp_mobile_panels_ktp700_firmware—
    Othersiemenssimatic_hmi_ktp_mobile_panels_ktp700f_firmware15.1
    Othersiemenssimatic_hmi_ktp_mobile_panels_ktp700f_firmware—
    Othersiemenssimatic_hmi_ktp_mobile_panels_ktp900_firmware15.1
    Othersiemenssimatic_hmi_ktp_mobile_panels_ktp900_firmware—
    Othersiemenssimatic_hmi_ktp_mobile_panels_ktp900f_firmware15.1
    Othersiemenssimatic_hmi_ktp_mobile_panels_ktp900f_firmware—
    Othersiemenssimatic_rf181-eip_firmware—
    Othersiemenssimatic_rf182c_firmware—
    Othersiemenssimatic_rf185c_firmware—

    Weakness classes (CWE)

    • CWE-125Out-of-bounds Read

      Base

      The product reads data past the end, or before the beginning, of the intended buffer.

      Entry at MITRE CWE-125

    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-2019-6568
    <a href="https://intel.neosec.eu/en/cve/CVE-2019-6568"><img src="https://intel.neosec.eu/badge/cve/CVE-2019-6568.svg?lang=en" alt="CVE-2019-6568 – NEOSEC Intel" height="20"></a>