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CVE-2020-13754

23
FAUCET Score

CVE-2020-13754 is an out-of-bounds access vulnerability in QEMU 4.2.0, specifically within the hw/pci/msix.c component, affecting various QEMU and Linux distributions. This vulnerability allows a highly privileged guest OS user to trigger the flaw via a crafted address during an MSI-X MMIO operation. Rated as Medium severity with a CVSS score of 6.7, it poses a high risk to confidentiality, integrity, and availability. There is currently no evidence of active exploitation, public exploit code (Metasploit, Nuclei, ExploitDB), or significant community discussion or media coverage surrounding this CVE.

Impacted Technologies

VendorProductVersion(s)CPE
<= 5.0.1CPE matchmatch criteria
cpe:2.3:a:qemu:qemu:*:*:*:*:*:*:*:*
16.04CPE matchmatch criteria
cpe:2.3:o:canonical:ubuntu_linux:16.04:*:*:*:lts:*:*:*
18.04CPE matchmatch criteria
cpe:2.3:o:canonical:ubuntu_linux:18.04:*:*:*:lts:*:*:*
20.04CPE matchmatch criteria
cpe:2.3:o:canonical:ubuntu_linux:20.04:*:*:*:lts:*:*:*
9.0CPE matchmatch criteria
cpe:2.3:o:debian:debian_linux:9.0:*:*:*:*:*:*:*

CVSS Data

CVSS version used by this source: 3.1

6.7MEDIUM

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

Attack Vector
LOCAL
Attack Complexity
LOW
Privileges Required
HIGH
User Interaction
NONE
Scope
UNCHANGED
Confidentiality Impact
HIGH
Integrity Impact
HIGH
Availability Impact
HIGH
Exploitability Score
0.8
Impact Score
5.9
CvssVersion
3.1

Exploit Intelligence

EPSS Score
0.42%
Probability of exploitation in next 30 days
EPSS Percentile
34.6%
Percentile rank of EPSS score among Peer Group
As of 2026-07-27
Model: v2026.06.15
This CVE's current EPSS score of 0.0042 is in the 84th percentile among its peer group of 3,720 CVEs.

Social Chatter

The average CVE in this peer group has 0.0 Twitter, 0.0 Reddit, 0.0 Bluesky, 0.0 Mastodon, and 0.1 GitHub mentions.

Media Mentions

No media coverage found for this CVE.

The average CVE in this peer group has 0.1 InfoSec Media, 0.0 Vendor Blog, and 0.0 Security Researcher mentions.

Remediation

Patch Available

Vendor Patches (12)

microsoftpatch availablevia msrc
Product: 16955-16820Fixed in: 4.2.0-21
microsoftpatch availablevia msrc
Product: CBL Mariner 1.0 x64Fixed in: 4.2.0-21
microsoftpatch availablevia msrc
Product: CBL Mariner 1.0 ARMFixed in: 4.2.0-21
microsoftpatch availablevia msrc
Product: cm1 qemu-kvm 4.2.0-21 on CBL Mariner 1.0Fixed in: 4.2.0-21
redhatpatch availablevia redhat_api
Product: Red Hat Enterprise Linux 8Fixed in: virt:rhel-8040020210721215855.522a0ee4
View patch
redhatpatch availablevia redhat_api
Product: Advanced Virtualization for RHEL 8.2.1Fixed in: virt:8.2-8020120210603194525.863bb0db
View patch
redhatpatch availablevia redhat_api
Product: Advanced Virtualization for RHEL 8.2.1Fixed in: virt-devel:8.2-8020120210603194525.863bb0db
View patch
redhatpatch availablevia redhat_api
Product: Red Hat Enterprise Linux 8Fixed in: virt-devel:rhel-8040020210721215855.522a0ee4
View patch
redhatno patchvia redhat_api
Product: Red Hat Enterprise Linux 8 Advanced VirtualizationFixed in: virt:8.2/qemu-kvm
redhatend of lifevia redhat_api
Product: Red Hat OpenStack Platform 13 (Queens)Fixed in: qemu-kvm-rhev
redhatend of lifevia redhat_api
Product: Red Hat Enterprise Linux 7Fixed in: qemu-kvm-ma
redhatend of lifevia redhat_api
Product: Red Hat Enterprise Linux 7Fixed in: qemu-kvm-rhev

Vendor Advisories (3)

microsoft2020-Aug/CVE-2020-13754

CVE-2020-13754

Aug 11, 2020
microsoft2020-Jun/CVE-2020-13754Moderate

hw/pci/msix.c in QEMU 4.2.0 allows guest OS users to trigger an out-of-bounds access via a crafted address in an msi-x mmio operation.

Jun 9, 2020
redhatCVE-2020-13754Moderate

QEMU: msix: OOB access during mmio operations may lead to DoS

Jun 1, 2020

References

lists.debian.org / debian-lts-announce/2020/07/msg00020.html
Mailing ListThird Party Advisory
lists.gnu.org / archive/html/qemu-devel/2020-06/msg00004.html
Issue TrackingPatchThird Party Advisory
security.gentoo.org / glsa/202011-09
Third Party Advisory
security.netapp.com / advisory/ntap-20200608-0007
Third Party Advisory
usn.ubuntu.com / 4467-1
Third Party Advisory
debian.org / security/2020/dsa-4728
Third Party Advisory
openwall.com / lists/oss-security/2020/06/01/6
Mailing ListPatchThird Party Advisory
openwall.com / lists/oss-security/2020/06/15/8
Mailing ListPatchThird Party Advisory