CVE-2020-14344

Name: CVE-2020-14344
Creator: NVD / NIST
Published: 2020-08-05T14:15:12.42+00:00
License: https://creativecommons.org/publicdomain/zero/1.0/

MEDIUMCVSS 6.7/10EPSS 0.48%

Last modified Jun 17, 2026

CVE-2020-14344 is a medium-severity vulnerability rated 6.7/10 on the CVSS scale. An integer overflow leading to a heap-buffer overflow was found in The X Input Method (XIM) client was implemented in libX11 before version 1.6.10. As per upstream this is security relevant when setuid programs call XIM client functions while running with elevated privileges. EPSS estimates a 0.48% chance of exploitation in the next 30 days.

Description

An integer overflow leading to a heap-buffer overflow was found in The X Input Method (XIM) client was implemented in libX11 before version 1.6.10. As per upstream this is security relevant when setuid programs call XIM client functions while running with elevated privileges. No such programs are shipped with Red Hat Enterprise Linux.

Metrics

CVSS 3.1

6.7/10

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

EPSS Probability

0.48%

38.0th percentile

Probability of exploitation in the next 30 days. Learn more

Weakness Enumeration

Affected Software

Vendor	Product	Versions
X.Org	Libx11	< 1.6.10
Fedoraproject	Fedora	31
Fedoraproject	Fedora	32
Fedoraproject	Fedora	33
Canonical	Ubuntu Linux	12.04
Canonical	Ubuntu Linux	14.04
Canonical	Ubuntu Linux	16.04
Canonical	Ubuntu Linux	18.04
Canonical	Ubuntu Linux	20.04
Opensuse	Leap	15.1
Opensuse	Leap	15.2

References

http://lists.opensuse.org/opensuse-security-announce/2020-08/msg00014.htmlMailing List, Third Party Advisory
http://lists.opensuse.org/opensuse-security-announce/2020-08/msg00015.htmlMailing List, Third Party Advisory
http://lists.opensuse.org/opensuse-security-announce/2020-08/msg00024.htmlMailing List, Third Party Advisory
http://lists.opensuse.org/opensuse-security-announce/2020-08/msg00031.htmlMailing List, Third Party Advisory
https://bugzilla.redhat.com/show_bug.cgi?id=CVE-2020-14344Issue Tracking, Patch, Third Party Advisory
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/4VDDSAYV7XGNRCXE7HCU23645MG74OFF/
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/7AVXCQOSCAPKYYHFIJAZ6E2C7LJBTLXF/
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/XY4H2SIEF2362AMNX5ZKWAELGU7LKFJB/
https://lists.x.org/archives/xorg-announce/2020-July/003050.htmlMailing List, Patch, Vendor Advisory
https://security.gentoo.org/glsa/202008-18Third Party Advisory
https://usn.ubuntu.com/4487-1/Third Party Advisory
https://usn.ubuntu.com/4487-2/Third Party Advisory
https://www.openwall.com/lists/oss-security/2020/07/31/1Mailing List, Patch, Third Party Advisory
http://lists.opensuse.org/opensuse-security-announce/2020-08/msg00014.htmlMailing List, Third Party Advisory
http://lists.opensuse.org/opensuse-security-announce/2020-08/msg00015.htmlMailing List, Third Party Advisory
http://lists.opensuse.org/opensuse-security-announce/2020-08/msg00024.htmlMailing List, Third Party Advisory
http://lists.opensuse.org/opensuse-security-announce/2020-08/msg00031.htmlMailing List, Third Party Advisory
https://bugzilla.redhat.com/show_bug.cgi?id=CVE-2020-14344Issue Tracking, Patch, Third Party Advisory
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/4VDDSAYV7XGNRCXE7HCU23645MG74OFF/
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/7AVXCQOSCAPKYYHFIJAZ6E2C7LJBTLXF/
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/XY4H2SIEF2362AMNX5ZKWAELGU7LKFJB/
https://lists.x.org/archives/xorg-announce/2020-July/003050.htmlMailing List, Patch, Vendor Advisory
https://security.gentoo.org/glsa/202008-18Third Party Advisory
https://usn.ubuntu.com/4487-1/Third Party Advisory
https://usn.ubuntu.com/4487-2/Third Party Advisory
https://www.openwall.com/lists/oss-security/2020/07/31/1Mailing List, Patch, Third Party Advisory

Timeline

Published: Aug 5, 2020
Last Modified: Jun 17, 2026
Status: Modified

Frequently Asked Questions

What is CVE-2020-14344?

How severe is CVE-2020-14344?

CVE-2020-14344 has a CVSS score of 6.7/10 (MEDIUM severity). The EPSS model estimates a 0.48% probability of exploitation in the next 30 days.

How do I fix CVE-2020-14344?

Check the vendor references and advisories linked above for patched versions and mitigation guidance. You can also run a Strix scan to test if your systems are affected.

Are you affected by CVE-2020-14344?

Run a free Strix scan to check your systems for this vulnerability.

Scan your code now

Source: NVD / NIST