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CVE-2018-5683

21
FAUCET Score

CVE-2018-5683 describes a denial-of-service vulnerability in Qemu's vga_draw_text function, affecting Canonical, Debian, Qemu, and Red Hat. This medium-severity flaw (CVSS 6.0) allows a privileged local guest OS user to crash the QEMU process due to an out-of-bounds read caused by improper memory address validation. There is no evidence of active exploitation, publicly available exploit code (Metasploit, Nuclei, ExploitDB), or significant community discussion or media coverage surrounding this CVE.

Impacted Technologies

VendorProductVersion(s)CPE
<= 2.11.1CPE matchmatch criteria
cpe:2.3:a:qemu:qemu:*:*:*:*:*:*:*:*
8.0CPE matchmatch criteria
cpe:2.3:o:debian:debian_linux:8.0:*:*:*:*:*:*:*
9.0CPE matchmatch criteria
cpe:2.3:o:debian:debian_linux:9.0:*:*:*:*:*:*:*
6.0CPE matchmatch criteria
cpe:2.3:o:redhat:enterprise_linux_desktop:6.0:*:*:*:*:*:*:*
7.0CPE matchmatch criteria
cpe:2.3:o:redhat:enterprise_linux_desktop:7.0:*:*:*:*:*:*:*

CVSS Data

CVSS version used by this source: 3.1

6.0MEDIUM

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

Attack Vector
LOCAL
Attack Complexity
LOW
Privileges Required
HIGH
User Interaction
NONE
Scope
CHANGED
Confidentiality Impact
NONE
Integrity Impact
NONE
Availability Impact
HIGH
Exploitability Score
1.5
Impact Score
4.0
CvssVersion
3.1

Exploit Intelligence

EPSS Score
0.68%
Probability of exploitation in next 30 days
EPSS Percentile
48.8%
Percentile rank of EPSS score among Peer Group
As of 2026-07-27
Model: v2026.06.15
This CVE's current EPSS score of 0.0068 is in the 95th 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 (13)

redhatpatch availablevia redhat_api
Product: Red Hat Enterprise Linux 6Fixed in: qemu-kvm-2:0.12.1.2-2.506.el6_10.1
View patch
redhatpatch availablevia redhat_api
Product: Red Hat Enterprise Linux 7Fixed in: qemu-kvm-10:1.5.3-156.el7
View patch
redhatpatch availablevia redhat_api
Product: Red Hat OpenStack Platform 10.0 (Newton)Fixed in: qemu-kvm-rhev-10:2.10.0-21.el7
View patch
redhatpatch availablevia redhat_api
Product: Red Hat OpenStack Platform 11.0 (Ocata)Fixed in: qemu-kvm-rhev-10:2.10.0-21.el7
View patch
redhatpatch availablevia redhat_api
Product: Red Hat OpenStack Platform 12.0 (Pike)Fixed in: qemu-kvm-rhev-10:2.10.0-21.el7
View patch
redhatpatch availablevia redhat_api
Product: Red Hat OpenStack Platform 8.0 (Liberty)Fixed in: qemu-kvm-rhev-10:2.10.0-21.el7
View patch
redhatpatch availablevia redhat_api
Product: Red Hat OpenStack Platform 9.0 (Mitaka)Fixed in: qemu-kvm-rhev-10:2.10.0-21.el7
View patch
redhatpatch availablevia redhat_api
Product: Red Hat Virtualization 4 for Red Hat Enterprise Linux 7Fixed in: qemu-kvm-rhev-10:2.10.0-21.el7
View patch
redhatno patchvia redhat_api
Product: Red Hat Enterprise Linux 7Fixed in: qemu-kvm
redhatend of lifevia redhat_api
Product: Red Hat Enterprise Linux 5Fixed in: kvm
redhatend of lifevia redhat_api
Product: Red Hat Enterprise Linux 5Fixed in: xen
redhatend of lifevia redhat_api
Product: Red Hat Enterprise Linux OpenStack Platform 6 (Juno)Fixed in: qemu-kvm-rhev
redhatend of lifevia redhat_api
Product: Red Hat Enterprise Linux OpenStack Platform 7 (Kilo)Fixed in: qemu-kvm-rhev

Vendor Advisories (1)

redhatCVE-2018-5683Low

Qemu: Out-of-bounds read in vga_draw_text routine

Dec 25, 2017

References

access.redhat.com / errata/RHSA-2018:0816
Third Party Advisory
access.redhat.com / errata/RHSA-2018:1104
Third Party Advisory
access.redhat.com / errata/RHSA-2018:2162
Third Party Advisory
lists.debian.org / debian-lts-announce/2018/09/msg00007.html
Mailing ListThird Party Advisory
lists.gnu.org / archive/html/qemu-devel/2018-01/msg02597.html
ExploitMailing ListThird Party Advisory
usn.ubuntu.com / 3575-1
Third Party Advisory
debian.org / security/2018/dsa-4213
Third Party Advisory
openwall.com / lists/oss-security/2018/01/15/2
Mailing ListPatchThird Party Advisory
securityfocus.com / bid/102518
Third Party AdvisoryVDB Entry