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Vulnerability record · CVE-2020-11900 · published 17 June 2020
CVE-2020-11900: Treck tcp\/ip double free vulnerability
Treck · Tcp\/Ip
The Treck TCP/IP stack before 6.0.1.41 has an IPv4 tunneling Double Free.
8.2 CVSS 3.1 High EPSS 13% · top 3.8% CWE-415 · Double free
8.2CVSS 3.1 base score, v2 6.4
13%EPSS exploitation probability, 30 days
NoNot in CISA KEV
1Affected product versions listed by NVD
22References, 2 tagged exploit
17 Jun 2026Last modified by NVD
Description
The Treck TCP/IP stack before 6.0.1.41 has an IPv4 tunneling Double Free.
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:H
Affected products
1 vulnerable configurations from NVD's CPE data, grouped by vendor and product.
References
Track CVE-2020-11900 inside VULONE
Watch it alongside the ransomware crews, C2 infrastructure and forum chatter that reference it, query it through the API and pull it into your SIEM over TAXII.
Related vulnerabilities
Same products first, then exploited flaws of the same weakness class.
5.4CVE-2020-11899Treck TCP/IP stack IPv6 out-of-bounds read (Ripple20)The Treck TCP/IP stack before 6.0.1.66 contains an out-of-bounds read in its IPv6 handling (CWE-125). Because Treck is embedded in many OEM products,…KEVEPSS 19%analysed10.0CVE-2020-11897Treck tcp\/ip out-of-bounds write vulnerabilityThe Treck TCP/IP stack before 5.0.1.35 has an Out-of-Bounds Write via multiple malformed IPv6 packets.EPSS 9.1%10.0CVE-2020-11896Treck tcp\/ip memory buffer overflow vulnerabilityThe Treck TCP/IP stack before 6.0.1.66 allows Remote Code Execution, related to IPv4 tunneling.EPSS 37%9.8CVE-2020-25066Treck tcp\/ip out-of-bounds write vulnerabilityA heap-based buffer overflow in the Treck HTTP Server component before 6.0.1.68 allows remote attackers to cause a denial of service (crash/reset) or…EPSS 3.5%9.1CVE-2020-11898Treck tcp\/ip memory buffer overflow vulnerabilityThe Treck TCP/IP stack before 6.0.1.66 improperly handles an IPv4/ICMPv4 Length Parameter Inconsistency, which might allow remote attackers to trigge…EPSS 19%9.0CVE-2020-11901Treck tcp\/ip out-of-bounds read vulnerabilityThe Treck TCP/IP stack before 6.0.1.66 allows Remote Code execution via a single invalid DNS response.EPSS 21%7.3CVE-2020-11902Treck tcp\/ip out-of-bounds read vulnerabilityThe Treck TCP/IP stack before 6.0.1.66 has an IPv6OverIPv4 tunneling Out-of-bounds Read.EPSS 9.3%7.3CVE-2020-11904Treck tcp\/ip integer overflow vulnerabilityThe Treck TCP/IP stack before 6.0.1.66 has an Integer Overflow during Memory Allocation that causes an Out-of-Bounds Write.EPSS 3.2%
Source: NIST National Vulnerability Database (record CVE-2020-11900), CISA KEV, FIRST EPSS (scores of 2026-09-26). This page is refreshed as NVD updates the record.
