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No exploitation reportedFix available

CVE-2020-11901

No exploitation reported by the sources we read.

  • Published2020-06-17
  • Fixed in6.0.1.66
  • WeaknessCWE-125 · CWE-131 · CWE-330

Am I affected?

With a domain, we read the version its public headers and pages expose. A distribution build can carry the fix under an older number.

Description

The Treck TCP/IP stack before 6.0.1.66 allows Remote Code execution via a single invalid DNS response.

Timeline

dates in UTC
  1. 2020-06-1711:15CVE publishedNVD

Observed activity

isMalicious corpus · updated 2026-11-03 21:37 UTC
Indicators tagged with this CVE, per day0 indicators over 7 days
Block these indicators
  • Firewall list (EDL, text): https://api.ismalicious.com/edl/cve/CVE-2020-11901?format=txt
  • CSV export: https://api.ismalicious.com/edl/cve/CVE-2020-11901?format=csv
  • TAXII collection of exploited CVEs
  • The EDL and CSV take an API key on the Pro plan.

Versions per branch

NVD
Treck tcp\/ip
BranchAffectedFixed in
6.0< 6.0.1.666.0.1.66

as publishedRanges as NVD and OSV publish them; a distribution’s build can be fixed under an older number.

Distribution builds and vendor advisories

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 · +5 more

Full record on NVD

Fix

  1. Update Treck tcp\/ip to 6.0.1.66
  2. Mitigation from the vendor CISA ICSA-20-168-01 · 8 productsTreck recommends users apply the latest version of the affected products:
  3. Mitigation from the vendor CISA ICSA-20-168-01 · 8 productsTreck TCP/IP: Update to 6.0.1.67 or later versions
  4. Mitigation from the vendor CISA ICSA-20-168-01 · 8 productsTo obtain patches, email Treck at security@treck.com
  5. Mitigation from the vendor CISA ICSA-20-168-01 · 8 productsFor more detailed information on the vulnerabilities and the mitigating controls, please see the Treck advisory.
  6. Mitigation from the vendor CISA ICSA-20-168-01 · 8 productsAdditional vendors affected by the reported vulnerabilities have also released security advisories related to their affected products. Those advisories are as follows:
  7. Mitigation from the vendor CISA ICSA-20-168-01 · 8 productsABB

Advisories and patches

Detection

Nuclei template
none so far
ProjectDiscovery
Exploit-DB
no entry
Exploit-DB
Proof-of-concept repositories
none listed
PoC-in-GitHub
Metasploit modules
none listed
Metasploit Framework

Sources

  • NVDCVSS 3.19read 2026-10-23
  • NVDCVSS 2.09.3read 2026-10-23
  • NVDweakness (CWE)CWE-125, CWE-131, CWE-330, CWE-787read 2026-10-23
  • FIRST EPSSEPSS score21.6 %read 2026-11-02

Identifiers

Technical details

CVSS v3 Vector
CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:C/C:H/I:H/A:H
Published
2020-06-17
Last Modified
2026-06-17
NVD status
Modified

Frequently asked questions

What is CVE-2020-11901?

The Treck TCP/IP stack before 6.0.1.66 allows Remote Code execution via a single invalid DNS response.

Is CVE-2020-11901 actively exploited?

Active exploitation of CVE-2020-11901 has not been confirmed. Its EPSS score was 21.6% on 2026-11-03, the estimated probability of exploitation in the next 30 days.

What is the CVSS score for CVE-2020-11901?

CVE-2020-11901 has a CVSS v3 base score of 9 (CRITICAL severity), with vector string CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:C/C:H/I:H/A:H.

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Related vulnerabilities

Same product first, then the same vendor advisory and the same publication week.

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Sources for this record