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CVE-2018-20815

32
FAUCET Score

CVE-2018-20815 is a critical buffer overflow vulnerability affecting QEMU version 3.1.0, specifically within the load_device_tree function in device_tree.c due to its use of the deprecated load_image function. This vulnerability carries a CVSS score of 9.8, indicating a severe risk with network-based exploitation, low attack complexity, and high impact on confidentiality, integrity, and availability. Despite its high severity, there is currently no evidence of active exploitation, publicly available exploit code, or significant community discussion surrounding this CVE.

Impacted Technologies

VendorProductVersion(s)CPE
3.1.0CPE matchmatch criteria
cpe:2.3:a:qemu:qemu:3.1.0:*:*:*:*:*:*:*

CVSS Data

CVSS version used by this source: 3.0

9.8CRITICAL

CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

Attack Vector
NETWORK
Attack Complexity
LOW
Privileges Required
NONE
User Interaction
NONE
Scope
UNCHANGED
Confidentiality Impact
HIGH
Integrity Impact
HIGH
Availability Impact
HIGH
Exploitability Score
3.9
Impact Score
5.9
CvssVersion
3.0

Exploit Intelligence

EPSS Score
4.43%
Probability of exploitation in next 30 days
EPSS Percentile
90.4%
Percentile rank of EPSS score among Peer Group
As of 2026-07-27
Model: v2026.06.15
This CVE's current EPSS score of 0.0443 is in the 84th percentile among its peer group of 36,897 CVEs.

Social Chatter

The average CVE in this peer group has 0.0 Twitter, 0.1 Reddit, 0.3 Bluesky, 0.3 Mastodon, and 2.4 GitHub mentions.

Media Mentions

No media coverage found for this CVE.

The average CVE in this peer group has 0.3 InfoSec Media, 0.0 Vendor Blog, and 0.0 Security Researcher mentions.

Remediation

Patch Available

Vendor Patches (12)

redhatpatch availablevia redhat_api
Product: Red Hat Enterprise Linux 7Fixed in: qemu-kvm-ma-10:2.12.0-18.el7_6.4
View patch
redhatpatch availablevia redhat_api
Product: Red Hat Enterprise Linux 8Fixed in: virt:rhel-8000020190510171727.55190bc5
View patch
redhatpatch availablevia redhat_api
Product: Red Hat OpenStack Platform 10.0 (Newton)Fixed in: qemu-kvm-rhev-10:2.12.0-18.el7_6.6
View patch
redhatpatch availablevia redhat_api
Product: Red Hat OpenStack Platform 13.0 (Queens)Fixed in: qemu-kvm-rhev-10:2.12.0-18.el7_6.6
View patch
redhatpatch availablevia redhat_api
Product: Red Hat OpenStack Platform 14.0 (Rocky)Fixed in: qemu-kvm-rhev-10:2.12.0-18.el7_6.6
View patch
redhatpatch availablevia redhat_api
Product: Red Hat OpenStack Platform 9.0 (Mitaka)Fixed in: qemu-kvm-rhev-10:2.12.0-18.el7_6.6
View patch
redhatpatch availablevia redhat_api
Product: Red Hat Virtualization 4 for Red Hat Enterprise Linux 7Fixed in: qemu-kvm-rhev-10:2.12.0-18.el7_6.7
View patch
redhatpatch availablevia redhat_api
Product: Red Hat Virtualization 4 for Red Hat Enterprise Linux 7Fixed in: qemu-kvm-rhev-10:2.12.0-33.el7
View patch
redhatpatch availablevia redhat_api
Product: Red Hat Virtualization Engine 4.2Fixed in: qemu-kvm-rhev-10:2.12.0-18.el7_6.7
View patch
redhatpatch availablevia redhat_api
Product: Red Hat Virtualization Engine 4.3Fixed in: qemu-kvm-rhev-10:2.12.0-18.el7_6.7
View patch
redhatpatch availablevia redhat_api
Product: Red Hat Virtualization Engine 4.3Fixed in: qemu-kvm-rhev-10:2.12.0-33.el7
View patch
redhatno patchvia redhat_api
Product: Red Hat OpenStack Platform 8 (Liberty)Fixed in: qemu-kvm-rhev

Vendor Advisories (1)

redhatCVE-2018-20815Important

QEMU: device_tree: heap buffer overflow while loading device tree blob

Dec 14, 2018

References

access.redhat.com / errata/RHSA-2019:1667
access.redhat.com / errata/RHSA-2019:1723
access.redhat.com / errata/RHSA-2019:1743
access.redhat.com / errata/RHSA-2019:1881
access.redhat.com / errata/RHSA-2019:1968
access.redhat.com / errata/RHSA-2019:2507
access.redhat.com / errata/RHSA-2019:2553
git.qemu.org
lists.fedoraproject.org / archives/list/package-announce%40lists.fedoraproject.org/message/BOE3PVFPMWMXV3DGP2R3XIHAF2ZQU3FS
lists.fedoraproject.org / archives/list/package-announce%40lists.fedoraproject.org/message/RVDHJB2QKXNDU7OFXIHIL5O5VN5QCSZL
seclists.org / bugtraq/2019/Aug/41
debian.org / security/2019/dsa-4506