HOMEVULNERABILITIESCVE-2020-14364
MEDIUM

CVE-2020-14364

CWE-125Published: August 31, 2020· Updated: Jun 17, 2026

5.0
CVSS v3.1

Official 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.

NVD Source

Technical Analysis

CVE-2020-14364 requires local access, meaning attackers must already have a foothold on the target system.

Exploitation requires high privileges, which limits the exposure to scenarios where an attacker has already gained initial access.

The vulnerability has a "Changed" scope, meaning successful exploitation can impact components beyond the vulnerable component itself — such as the host operating system or adjacent services.

CVSS v3.1 Vector Breakdown

Exploitability
Attack VectorLocal
Attack ComplexityHigh
Privileges Req.High
User InteractionNone
ScopeChanged
Impact
ConfidentialityLow
IntegrityLow
AvailabilityLow
CVSS:3.1/AV:L/AC:H/PR:H/UI:N/S:C/C:L/I:L/A:L

Affected Vendors & Products

Canonical1 product(s)
ubuntu linux
Debian1 product(s)
debian linux
Fedora1 product(s)
fedora
openSUSE1 product(s)
leap
qemu1 product(s)
qemu
Red Hat2 product(s)
openstackenterprise linux
Source: NVD CPE · 14 total CPE entries

Exploit & PoC Resources

NO KNOWN EXPLOITNo public exploit confirmed at this time
Exploit-DB
Offensive Security exploit database
GitHub PoC Search
Community PoC repositories
Rapid7 / Metasploit
Metasploit module search
PacketStorm
Security advisories & exploits
NVD Detail
Official NIST entry
MITRE CVE
CVE Program entry
External links open in a new tab. Always verify in a controlled environment before use.

Official Patches & Advisories

PATCHhttps://bugzilla.redhat.com/show_bug.cgi?id=1869201
PATCHhttps://bugzilla.redhat.com/show_bug.cgi?id=1869201
ADVISORYhttp://lists.opensuse.org/opensuse-security-announce/2020-10/msg00024.html
ADVISORYhttps://lists.debian.org/debian-lts-announce/2020/09/msg00013.html
ADVISORYhttps://security.gentoo.org/glsa/202009-14
ADVISORYhttps://security.gentoo.org/glsa/202011-09
ADVISORYhttps://security.netapp.com/advisory/ntap-20200924-0006/
ADVISORYhttps://usn.ubuntu.com/4511-1/
ADVISORYhttps://www.debian.org/security/2020/dsa-4760
ADVISORYhttps://www.openwall.com/lists/oss-security/2020/08/24/2
ADVISORYhttps://www.openwall.com/lists/oss-security/2020/08/24/3
ADVISORYhttp://lists.opensuse.org/opensuse-security-announce/2020-10/msg00024.html
ADVISORYhttps://lists.debian.org/debian-lts-announce/2020/09/msg00013.html
ADVISORYhttps://security.gentoo.org/glsa/202009-14
ADVISORYhttps://security.gentoo.org/glsa/202011-09
ADVISORYhttps://security.netapp.com/advisory/ntap-20200924-0006/
ADVISORYhttps://usn.ubuntu.com/4511-1/
ADVISORYhttps://www.debian.org/security/2020/dsa-4760
ADVISORYhttps://www.openwall.com/lists/oss-security/2020/08/24/2
ADVISORYhttps://www.openwall.com/lists/oss-security/2020/08/24/3

All References (24)

→
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

Quick Facts

CVE IDCVE-2020-14364
CVSS Score5.0 / 10
SeverityMEDIUM
WeaknessCWE-125
CISA KEVNo
Affected6 vendor(s)
PublishedAug 31, 2020

Related CVEs (CWE-125)

CVE-2021-21777
10.0
CVE-2013-0767
10.0
CVE-2017-14451
10.0
CVE-2021-41556
10.0
CVE-2009-2523
10.0
CVE-2023-26489
9.9

Recommended Actions

  • →Apply vendor patches immediately
  • →Monitor CVE-2020-14364 in threat intel feeds
  • →Review IDS/IPS signatures for exploitation attempts
Data sourced from NVD (NIST), CISA KEV, and EPSS (FIRST). Analysis generated by CTIWATCH.COM. CVE data is provided under the NVD usage policy.
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