# CVE-2020-11899: Treck TCP/IP stack Out-of-Bounds Read Vulnerability

> CVE-2020-11899: Treck TCP/IP stack Out-of-Bounds Read Vulnerability. CVSS 5.4 (CVSS 3.1), in CISA KEV.

Canonical: https://rewindex.com/cve/CVE-2020-11899
Last updated: 2025-10-21T23:35:41Z

- Published: 2020-06-17 10:27 UTC · Updated: 2025-10-21 23:35 UTC · Assigner: mitre
- CVSS: 5.4 (CVSS 3.1) · Severity: Medium · Vector: CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:L
- EPSS: 18.4%, 97th percentile (scored 2026-10-25)
- CISA KEV: yes, added 2022-03-03, federal due date 2022-03-17, ransomware use: Unknown

## Description

The Treck TCP/IP stack before 6.0.1.66 has an IPv6 Out-of-bounds Read.

## CISA required action

Apply updates per vendor instructions.

## Affected vendors and products

- Treck TCP/IP stack: IPv6

## References

- [CVE record on cve.org](https://www.cve.org/CVERecord?id=CVE-2020-11899)
- [NVD entry](https://nvd.nist.gov/vuln/detail/CVE-2020-11899)
- [https://cwe.mitre.org/data/definitions/125.html](https://cwe.mitre.org/data/definitions/125.html)
- [https://jsof-tech.com/vulnerability-disclosure-policy/](https://jsof-tech.com/vulnerability-disclosure-policy/)
- [https://security.netapp.com/advisory/ntap-20200625-0006/](https://security.netapp.com/advisory/ntap-20200625-0006/)
- [https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-treck-ip-stack-JyBQ5GyC](https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-treck-ip-stack-JyBQ5GyC)
- [https://www.dell.com/support/article/de-de/sln321836/dell-response-to-the-ripple20-vulnerabilities](https://www.dell.com/support/article/de-de/sln321836/dell-response-to-the-ripple20-vulnerabilities)
- [https://www.intel.com/content/www/us/en/security-center/advisory/intel-sa-00295.html](https://www.intel.com/content/www/us/en/security-center/advisory/intel-sa-00295.html)
- [https://www.jsof-tech.com/ripple20/](https://www.jsof-tech.com/ripple20/)
- [https://www.kb.cert.org/vuls/id/257161](https://www.kb.cert.org/vuls/id/257161)
- [https://www.kb.cert.org/vuls/id/257161/](https://www.kb.cert.org/vuls/id/257161/)
- [https://www.treck.com](https://www.treck.com)
- [http://www.arubanetworks.com/assets/alert/ARUBA-PSA-2020-006.txt](http://www.arubanetworks.com/assets/alert/ARUBA-PSA-2020-006.txt)

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_Sources: CVE records from the CVE Program (cve.org). CVE® is a registered trademark of The MITRE Corporation. (https://www.cve.org/) This product uses data from the NVD API but is not endorsed or certified by the NVD. (https://nvd.nist.gov/) Known Exploited Vulnerabilities catalog from CISA. (https://www.cisa.gov/known-exploited-vulnerabilities-catalog) EPSS scores from FIRST (Exploit Prediction Scoring System). (https://www.first.org/epss/)_


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Canonical: https://rewindex.com/cve/CVE-2020-11899 · Markdown: https://rewindex.com/cve/CVE-2020-11899.md · JSON: https://rewindex.com/api/v1/cves/CVE-2020-11899 · Data licensed CC BY 4.0 (https://creativecommons.org/licenses/by/4.0/) · Generated 2026-10-26T02:11:44.139Z