CVE-2020-11901

Q: How do I fix CVE-2020-11901?

Upgrade tcp\/ip to 6.0.1.66 or later.

Q: Is CVE-2020-11901 being actively exploited?

Not that we know of. CVE-2020-11901 is not in the CISA Known Exploited Vulnerabilities catalog. Its EPSS score of 21.1% is the estimated probability that it will be exploited in the next 30 days. That is higher than 97% of all scored CVEs.

Q: How severe is CVE-2020-11901?

CVE-2020-11901 has a CVSS v3 base score of 9.0, rated critical. CVSS rates the technical impact if the vulnerability is exploited, not how likely that is, so weigh it alongside the exploit-prediction score when you decide what to patch first.

Q: What does CVE-2020-11901 affect?

Published advisories record a fix for tcp\/ip (NVD). Only products with a sourced advisory are listed, so treat this as what we can cite rather than a complete inventory.

CRITICALEPSS 97th pctl

9.0

CVSS v3

NVD

Description

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

CWE-125Out-of-bounds Read CWE-131 CWE-330 CWE-787Out-of-bounds Write

How to fix

Remediation Available

tcp\/ipNVD

Affected:< 6.0.1.66Fixed in:6.0.1.66CVE-2020-11901derived from NVD

TridentStack Control can deploy fixes like this automatically across your Windows, macOS, and Linux fleet. See how it works

Remediation is compiled from vendor and distribution security advisories. Always confirm against the linked source for your exact version and platform.

CVSS v3 Vector

Exploitability

Attack VectorNetwork

Attack ComplexityHigh

Privileges RequiredNone

User InteractionNone

ScopeChanged

Impact

ConfidentialityHigh

IntegrityHigh

AvailabilityHigh

CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:C/C:H/I:H/A:H

Exploit Intelligence

21.12%probability of exploitation in 30 days

97thpercentile

Very high risk: more likely to be exploited than 97% of all known CVEs.

References

Exploit1

jsof-tech.com

Vendor Advisory1

treck.com

Mitigation1

kb.cert.org

Third-Party Advisory2

Other references3

Related Vulnerabilities

Other CWE-125 (Out-of-bounds Read) vulnerabilities, ordered by exploit likelihood. View all

CVE	Severity	CVSS	EPSS	Exploited	Fix
CVE-2014-0160	High	7.5	100%	KEV	Fix
CVE-2025-5777	High	7.5	100%	KEV + Ransom	Fix
CVE-2021-4034	High	7.8	95%	KEV	Fix
CVE-2020-8794	Critical	9.8	89%	-	Fix
CVE-2023-49285	High	8.6	89%	-	Fix
CVE-2023-21769	High	7.5	89%	-	Fix

Common questions

How do I fix CVE-2020-11901?

Upgrade tcp\/ip to 6.0.1.66 or later.

Is CVE-2020-11901 being actively exploited?

Not that we know of. CVE-2020-11901 is not in the CISA Known Exploited Vulnerabilities catalog. Its EPSS score of 21.1% is the estimated probability that it will be exploited in the next 30 days. That is higher than 97% of all scored CVEs.

How severe is CVE-2020-11901?

CVE-2020-11901 has a CVSS v3 base score of 9.0, rated critical. CVSS rates the technical impact if the vulnerability is exploited, not how likely that is, so weigh it alongside the exploit-prediction score when you decide what to patch first.

What does CVE-2020-11901 affect?

Published advisories record a fix for tcp\/ip (NVD). Only products with a sourced advisory are listed, so treat this as what we can cite rather than a complete inventory.

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This product uses NVD data but is not endorsed or certified by the NVD. EPSS scores courtesy of FIRST.org (https://www.first.org/epss). Source: CISA KEV Catalog. Data as of 2024-11-21.