CVE-2020-11899

MEDIUMNVD 5.49.0▲Trending — 4 sources updated this weekExploited in the wild

5.4

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

CVSS v3: 5.4
EG Score: 9.0(high)
EPSS: 97.1%
KEV: ⚠ Exploited

Published

June 17, 2020

Last Modified

November 7, 2025

References (23)

cve@mitrehttp://www.arubanetworks.com/assets/alert/ARUBA-PSA-2020-006.txt
cve@mitrehttps://cwe.mitre.org/data/definitions/125.html
cve@mitrehttps://jsof-tech.com/vulnerability-disclosure-policy/
cve@mitrehttps://security.netapp.com/advisory/ntap-20200625-0006/
cve@mitrehttps://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-treck-ip-stack-JyBQ5GyC
cve@mitrehttps://www.dell.com/support/article/de-de/sln321836/dell-response-to-the-ripple20-vulnerabilities
cve@mitrehttps://www.intel.com/content/www/us/en/security-center/advisory/intel-sa-00295.html
cve@mitrehttps://www.jsof-tech.com/ripple20/
cve@mitrehttps://www.kb.cert.org/vuls/id/257161
cve@mitrehttps://www.kb.cert.org/vuls/id/257161/
cve@mitrehttps://www.treck.com
af854a3a-2127-422b-91ae-364da2661108http://www.arubanetworks.com/assets/alert/ARUBA-PSA-2020-006.txt
af854a3a-2127-422b-91ae-364da2661108https://cwe.mitre.org/data/definitions/125.html
af854a3a-2127-422b-91ae-364da2661108https://jsof-tech.com/vulnerability-disclosure-policy/
af854a3a-2127-422b-91ae-364da2661108https://security.netapp.com/advisory/ntap-20200625-0006/

Weakness Classification(1)

MITRE Common Weakness Enumeration — the root-cause categories this CVE belongs to.

CWE-125Out-of-bounds Read

Data Freshness Timeline

(refreshed 20× in last 7d / 20× in last 30d)

Every time one of our enrichment pipelines (NVD, MITRE cvelistV5, EPSS, CISA KEV, GHSA, OSV, vendor advisories) ran against this CVE. Most recent first.

2026-06-06 12:45 UTCEG score recompute
2026-06-06 12:45 UTCGHSA enrichment
2026-06-06 08:37 UTCEG score recompute
2026-06-06 08:37 UTCGHSA enrichment
2026-06-06 04:29 UTCEG score recompute
2026-06-06 04:29 UTCGHSA enrichment
2026-06-06 00:20 UTCEG score recompute
2026-06-06 00:20 UTCGHSA enrichment
2026-06-05 22:45 UTCepss_batch
2026-06-05 22:45 UTCepss_batch
2026-06-05 22:43 UTCkev_newly_listed
2026-06-05 20:13 UTCEG score recompute
2026-06-05 20:13 UTCGHSA enrichment
2026-06-05 16:05 UTCEG score recompute
2026-06-05 16:05 UTCGHSA enrichment
2026-06-05 11:57 UTCEG score recompute
2026-06-05 11:57 UTCGHSA enrichment
2026-06-05 07:49 UTCEG score recompute
2026-06-05 07:49 UTCGHSA enrichment
2026-06-05 06:08 UTCepss_batch

Frequently asked(6)

What is CVE-2020-11899?

CVE-2020-11899 is a medium vulnerability published on June 17, 2020. The Treck TCP/IP stack before 6.0.1.66 has an IPv6 Out-of-bounds Read.

When was CVE-2020-11899 disclosed?

CVE-2020-11899 was first published in the National Vulnerability Database on June 17, 2020, with the most recent update on November 7, 2025. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.

Is CVE-2020-11899 actively exploited?

Yes. CISA added CVE-2020-11899 to the Known Exploited Vulnerabilities catalog on March 3, 2022, affecting Treck TCP/IP stack IPv6. KEV listing indicates confirmed exploitation in the wild; this CVE warrants immediate patching attention.

What is the CVSS score of CVE-2020-11899?

CVE-2020-11899 has a CVSS v3 base score of 5.4 (NVD). EchelonGraph synthesises NVD + CISA KEV + FIRST EPSS + GHSA into a combined EG score of 9.0.

Which products are affected by CVE-2020-11899?

CVE-2020-11899 affects Treck TCP/IP stack IPv6. The full affected-products list, including version ranges and fixed versions, is shown in the Affected Packages section of this page.

How do I remediate CVE-2020-11899?

Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2020-11899, EchelonGraph cross-links them in the Vendor Advisories panel below — those typically contain the canonical remediation steps, fixed version numbers, and any vendor-specific mitigations.

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CVE-2020-11899

📅 Published

🔄 Last Modified

🔗 References (23)

Weakness Classification(1)

Data Freshness Timeline

❓ Frequently asked(6)

Dependency Blast Radius

Is Your Infrastructure Affected by CVE-2020-11899?

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Published

Last Modified

References (23)

Frequently asked(6)

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