What is CVE-2020-11909?

CVE-2020-11909 is a medium vulnerability published on June 17, 2020. The Treck TCP/IP stack before 6.0.1.66 has an IPv4 Integer Underflow.

When was CVE-2020-11909 disclosed?

CVE-2020-11909 was first published in the National Vulnerability Database on June 17, 2020, with the most recent update on September 30, 2025. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.

Is CVE-2020-11909 actively exploited?

CVE-2020-11909 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 85.4% percentile likelihood of exploitation in the next 30 days — higher percentiles indicate greater predicted risk.

What is the CVSS score of CVE-2020-11909?

CVE-2020-11909 has a CVSS v3 base score of 5.3 (NVD).

How do I remediate CVE-2020-11909?

Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2020-11909, 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.

CVE-2020-11909

MEDIUMNVD 5.35.3—

5.3

The Treck TCP/IP stack before 6.0.1.66 has an IPv4 Integer Underflow.

CVSS v3: 5.3
EG Score: 5.3(medium)
EPSS: 85.4%
KEV: Not listed

References (18)

cve@mitrehttp://www.arubanetworks.com/assets/alert/ARUBA-PSA-2020-006.txt
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.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://jsof-tech.com/vulnerability-disclosure-policy/
af854a3a-2127-422b-91ae-364da2661108https://security.netapp.com/advisory/ntap-20200625-0006/
af854a3a-2127-422b-91ae-364da2661108https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-treck-ip-stack-JyBQ5GyC
af854a3a-2127-422b-91ae-364da2661108https://www.dell.com/support/article/de-de/sln321836/dell-response-to-the-ripple20-vulnerabilities
af854a3a-2127-422b-91ae-364da2661108https://www.jsof-tech.com/ripple20/

Is Your Infrastructure Affected by CVE-2020-11909?

EchelonGraph automatically scans your cloud infrastructure and maps CVE exposure using blast radius analysis.

Start Free Scan →Browse All CVEs

CVE-2020-11909

Published

Last Modified

References (18)

Weakness Classification(1)

Data Freshness Timeline

Frequently asked(5)

Dependency Blast Radius

Is Your Infrastructure Affected by CVE-2020-11909?

Same CWE

CVE-2020-11909

📅 Published

🔄 Last Modified

🔗 References (18)

Weakness Classification(1)

Data Freshness Timeline

❓ Frequently asked(5)

Dependency Blast Radius

Is Your Infrastructure Affected by CVE-2020-11909?

🔗 Related CVEs(same CWE)

Same CWE

Published

Last Modified

References (18)

Frequently asked(5)

Related CVEs(same CWE)