Skip to main content
MEDIUM CISA KEV

CVE-2020-11899

CVSS v3

5.4

MEDIUM

EPSS Score

18.4 %

exploit probability, as of 2026-10-19

CISA KEV

Yes

known exploited

Exploitation

—

SSVC status

Get an alert for each new CVE published for Treck TCP/IP.

Set up CVE WatchFree account · no credit card

Affected and fixed versions

Packages from OSV.dev and products from the vendors' CSAF advisories.

version not verifiedVersions not verified: read as OSV.dev and the vendors publish them, not checked against each vendor's release list.

Vendor advisories

  • ICSA-20-168-01 CISA8 known affected

    Treck TCP/IP (Update I)

    Treck Inc. Treck Inc TCP/IP: IPv4 · Treck Inc. Treck Inc TCP/IP: IPv6 · Treck Inc. Treck Inc TCP/IP: UDP

Full record on NVD

Description

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

CISA Known Exploited Vulnerability

Date Added
2022-03-03
Patch Due Date
2022-03-17
Ransomware Use
Unknown

Technical details

Published
2020-06-17

Frequently asked questions

What is CVE-2020-11899?

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

Is CVE-2020-11899 actively exploited?

Yes. CVE-2020-11899 is on the CISA Known Exploited Vulnerabilities (KEV) catalog, meaning it has been confirmed as actively exploited in the wild. CISA requires federal agencies to patch by 2022-03-17.

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

CVE-2020-11899 has a CVSS v3 base score of 5.4 (MEDIUM severity).

Running Treck TCP/IP? Hear about its next vulnerability

CVE Watch matches each new CVE to the vendors and products you list (vendor and product, not the version) and puts it in your alerts with its KEV and EPSS status.

Already have an account? Open CVE WatchNo credit card required · No monthly cap on website lookups · 250 API requests/month