CVE-2020-11906

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

6.3 Medium

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

Attack profile

How easy it is to exploit

Attack vector: Adjacent network
Complexity: Low
Privileges needed: None
User interaction: None

What an attacker can affect

Confidentiality: Low
Integrity: Low
Availability: Low

Exploit likelihood

1.96%Down 0.3 points since Apr 14, 2021

What each source reports

NVD Score used 6.3

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

Record: CVE-2020-11906
CVSS 3.1: 6.3 MediumCVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:L
CVSS 2.0: 5.8 MediumAV:A/AC:L/Au:N/C:P/I:P/A:P
Weakness: CWE-191
Updated: 2026-11-02

CVE List No score

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

Record: CVE-2020-11906
Updated: 2026-11-02

EUVDEUVD-2020-4243 No score

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

Record: EUVD-2020-4243
Updated: 2026-11-03

GitHub AdvisoriesGHSA-vm7q-gv9m-xqf3 No score

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

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

Record: GHSA-vm7q-gv9m-xqf3
Updated: 2026-11-02

Affected products

treck tcp\/ip

History

History
Recorded	Changed	Sources
Nov 3, 2026	aliases	EUVD
Nov 2, 2026	first indexed	CVE List, GitHub Advisories, NVD

Dates are when Every CVE recorded each change. Upstream dates may differ.

In short

CVE-2020-11906 is a medium vulnerability (CVSS 6.3) in Treck Tcp\/ip, published June 17, 2020. No source lists public exploit code. EPSS puts the chance of exploitation in the next 30 days at 1.96%, the 80th percentile. No source names a fixed version.

References

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