Is CVE-2020-10188 in the CISA KEV catalog?

No. CVE-2020-10188 is not currently on the CISA Known Exploited Vulnerabilities list.

What is the CVSS severity of CVE-2020-10188?

CVE-2020-10188 has a CVSS v3 base score of 9.8 (CRITICAL).

What is the EPSS score for CVE-2020-10188?

CVE-2020-10188 has an EPSS score of 74.51% (99th percentile), estimating the probability of exploitation in the next 30 days.

How do I fix CVE-2020-10188?

Upgrade inetutils on debian 11 to 2:1.9.4-12 or later. Fixes are available for 12 affected products.

CVE & CISA-KEV Catalog

CVE-2020-10188

CRITICALEPSS 99th pctl

9.8

CVSS v3

NVD

Description

utility.c in telnetd in netkit telnet through 0.17 allows remote attackers to execute arbitrary code via short writes or urgent data, because of a buffer overflow involving the netclear and nextitem functions.

CWE-120Classic Buffer Overflow

How to fix

Remediation Available

inetutilsDebian

Fixed in:2:1.9.4-12CVE-2020-10188

inetutilsUbuntu

Fixed in:2:1.9.2-1ubuntu0.1~esm2USN-7781-1

Fixed in:2:1.9.4-1ubuntu0.1~esm3USN-7781-1

Fixed in:2:1.9.4-1ubuntu0.1~esm1USN-5048-2

Fixed in:2:1.9.4-3ubuntu0.1+esm2USN-7781-1

Fixed in:2:1.9.4-3ubuntu0.1USN-5048-1

Fixed in:2:1.9.4-11ubuntu0.1USN-5048-1

inetutils-ftpUbuntu

Fixed in:2:1.9.2-1ubuntu0.1~esm2USN-7781-1

Fixed in:2:1.9.4-1ubuntu0.1~esm3USN-7781-1

Fixed in:2:1.9.4-3ubuntu0.1+esm2USN-7781-1

inetutils-ftpdUbuntu

Fixed in:2:1.9.2-1ubuntu0.1~esm2USN-7781-1

Fixed in:2:1.9.4-1ubuntu0.1~esm3USN-7781-1

Fixed in:2:1.9.4-3ubuntu0.1+esm2USN-7781-1

inetutils-inetdUbuntu

Fixed in:2:1.9.2-1ubuntu0.1~esm2USN-7781-1

Fixed in:2:1.9.4-1ubuntu0.1~esm3USN-7781-1

Fixed in:2:1.9.4-3ubuntu0.1+esm2USN-7781-1

inetutils-pingUbuntu

Fixed in:2:1.9.2-1ubuntu0.1~esm2USN-7781-1

Fixed in:2:1.9.4-1ubuntu0.1~esm3USN-7781-1

Fixed in:2:1.9.4-3ubuntu0.1+esm2USN-7781-1

inetutils-syslogdUbuntu

Fixed in:2:1.9.2-1ubuntu0.1~esm2USN-7781-1

Fixed in:2:1.9.4-1ubuntu0.1~esm3USN-7781-1

Fixed in:2:1.9.4-3ubuntu0.1+esm2USN-7781-1

inetutils-talkUbuntu

Fixed in:2:1.9.2-1ubuntu0.1~esm2USN-7781-1

Fixed in:2:1.9.4-1ubuntu0.1~esm3USN-7781-1

Fixed in:2:1.9.4-3ubuntu0.1+esm2USN-7781-1

inetutils-telnetUbuntu

Fixed in:2:1.9.2-1ubuntu0.1~esm2USN-7781-1

Fixed in:2:1.9.4-1ubuntu0.1~esm3USN-7781-1

Fixed in:2:1.9.4-3ubuntu0.1+esm2USN-7781-1

inetutils-telnetdUbuntu

Fixed in:2:1.9.4-1ubuntu0.1~esm1USN-5048-2

Fixed in:2:1.9.4-3ubuntu0.1USN-5048-1

Fixed in:2:1.9.4-11ubuntu0.1USN-5048-1

inetutils-toolsUbuntu

Fixed in:2:1.9.2-1ubuntu0.1~esm2USN-7781-1

Fixed in:2:1.9.4-1ubuntu0.1~esm3USN-7781-1

Fixed in:2:1.9.4-3ubuntu0.1+esm2USN-7781-1

inetutils-tracerouteUbuntu

Fixed in:2:1.9.2-1ubuntu0.1~esm2USN-7781-1

Fixed in:2:1.9.4-1ubuntu0.1~esm3USN-7781-1

Fixed in:2:1.9.4-3ubuntu0.1+esm2USN-7781-1

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 ComplexityLow

Privileges RequiredNone

User InteractionNone

ScopeUnchanged

Impact

ConfidentialityHigh

IntegrityHigh

AvailabilityHigh

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

Exploit Intelligence

74.51%probability of exploitation in 30 days

99thpercentile

Very high risk: more likely to be exploited than 99% of all known CVEs.

References

Patch2

Third-Party Advisory5

Other references4

Related Vulnerabilities

Other CWE-120 (Classic Buffer Overflow) vulnerabilities, ordered by exploit likelihood. View all

CVE	Severity	CVSS	EPSS	Exploited	Fix
CVE-2014-0195	Medium	6.8	100%	-	Fix
CVE-2017-7269	Critical	9.8	100%	KEV	-
CVE-2019-11043	High	8.7	99%	KEV + Ransom	Fix
CVE-2011-4862	High	10.0	95%	-	Fix
CVE-2007-5659	High	7.8	94%	KEV	Fix
CVE-2022-3786	High	7.5	92%	-	Fix

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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 2026-01-21.