CVE-2020-14364

Name: CVE-2020-14364
Creator: NVD / NIST
Published: 2020-08-31T18:15:12.827+00:00
License: https://creativecommons.org/publicdomain/zero/1.0/

MEDIUMCVSS 5/10EPSS 5.45%

Last modified Jun 17, 2026

CVE-2020-14364 is a medium-severity vulnerability rated 5/10 on the CVSS scale. An out-of-bounds read/write access flaw was found in the USB emulator of the QEMU in versions before 5.2.0. This issue occurs while processing USB packets from a guest when USBDevice 'setup_len' exceeds its 'data_buf[4096]' in the do_token_in, do_token_out routines. EPSS estimates a 5.45% chance of exploitation in the next 30 days.

Description

An out-of-bounds read/write access flaw was found in the USB emulator of the QEMU in versions before 5.2.0. This issue occurs while processing USB packets from a guest when USBDevice 'setup_len' exceeds its 'data_buf[4096]' in the do_token_in, do_token_out routines. This flaw allows a guest user to crash the QEMU process, resulting in a denial of service, or the potential execution of arbitrary code with the privileges of the QEMU process on the host.

Metrics

CVSS 3.1

5/10

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

EPSS Probability

5.45%

91.7th percentile

Probability of exploitation in the next 30 days. Learn more

Weakness Enumeration

Affected Software

Vendor	Product	Versions
Qemu	Qemu	< 5.2.0
Redhat	Openstack	10
Redhat	Openstack	13
Redhat	Enterprise Linux	6.0
Redhat	Enterprise Linux	7.0
Redhat	Enterprise Linux	8.0
Fedoraproject	Fedora	31
Fedoraproject	Fedora	32
Debian	Debian Linux	9.0
Debian	Debian Linux	10.0
Opensuse	Leap	15.2
Canonical	Ubuntu Linux	16.04
Canonical	Ubuntu Linux	18.04
Canonical	Ubuntu Linux	20.04

References

http://lists.opensuse.org/opensuse-security-announce/2020-10/msg00024.htmlBroken Link, Mailing List, Third Party Advisory
https://bugzilla.redhat.com/show_bug.cgi?id=1869201Issue Tracking, Patch, Third Party Advisory
https://lists.debian.org/debian-lts-announce/2020/09/msg00013.htmlMailing List, Third Party Advisory
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/JTZQUQ6ZBPMFMNAUQBVJFELYNMUZLL6P/
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/M52WIRMZL6TZRYZ65N6OAYNNFHV62O2N/
https://security.gentoo.org/glsa/202009-14Third Party Advisory
https://security.gentoo.org/glsa/202011-09Third Party Advisory
https://security.netapp.com/advisory/ntap-20200924-0006/Third Party Advisory
https://usn.ubuntu.com/4511-1/Third Party Advisory
https://www.debian.org/security/2020/dsa-4760Third Party Advisory
https://www.openwall.com/lists/oss-security/2020/08/24/2Mailing List, Third Party Advisory
https://www.openwall.com/lists/oss-security/2020/08/24/3Mailing List, Third Party Advisory
http://lists.opensuse.org/opensuse-security-announce/2020-10/msg00024.htmlBroken Link, Mailing List, Third Party Advisory
https://bugzilla.redhat.com/show_bug.cgi?id=1869201Issue Tracking, Patch, Third Party Advisory
https://lists.debian.org/debian-lts-announce/2020/09/msg00013.htmlMailing List, Third Party Advisory
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/JTZQUQ6ZBPMFMNAUQBVJFELYNMUZLL6P/
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/M52WIRMZL6TZRYZ65N6OAYNNFHV62O2N/
https://security.gentoo.org/glsa/202009-14Third Party Advisory
https://security.gentoo.org/glsa/202011-09Third Party Advisory
https://security.netapp.com/advisory/ntap-20200924-0006/Third Party Advisory
https://usn.ubuntu.com/4511-1/Third Party Advisory
https://www.debian.org/security/2020/dsa-4760Third Party Advisory
https://www.openwall.com/lists/oss-security/2020/08/24/2Mailing List, Third Party Advisory
https://www.openwall.com/lists/oss-security/2020/08/24/3Mailing List, Third Party Advisory

Timeline

Published: Aug 31, 2020
Last Modified: Jun 17, 2026
Status: Modified

Frequently Asked Questions

What is CVE-2020-14364?

How severe is CVE-2020-14364?

CVE-2020-14364 has a CVSS score of 5/10 (MEDIUM severity). The EPSS model estimates a 5.45% probability of exploitation in the next 30 days.

How do I fix CVE-2020-14364?

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-2020-14364?

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

Scan your code now

Source: NVD / NIST