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CVE-2018-5748

25
FAUCET Score

CVE-2018-5748 describes a denial-of-service vulnerability in libvirt's qemu/qemu_monitor.c, affecting Debian and Red Hat systems, where a large QEMU reply can lead to excessive memory consumption. This vulnerability carries a CVSSv3 score of 7.5 (High), indicating it can be exploited remotely with low complexity to achieve a complete loss of 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
Range not provided by sourceCPE matchmatch criteria
cpe:2.3:a:redhat:libvirt:-:*:*:*:*:*:*:*
7.0CPE matchmatch criteria
cpe:2.3:o:debian:debian_linux:7.0:*:*:*:*:*:*:*
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:*:*:*:*:*:*:*

CVSS Data

CVSS version used by this source: 3.0

7.5HIGH

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

Attack Vector
NETWORK
Attack Complexity
LOW
Privileges Required
NONE
User Interaction
NONE
Scope
UNCHANGED
Confidentiality Impact
NONE
Integrity Impact
NONE
Availability Impact
HIGH
Exploitability Score
3.9
Impact Score
3.6
CvssVersion
3.0

Exploit Intelligence

EPSS Score
3.17%
Probability of exploitation in next 30 days
EPSS Percentile
86.7%
Percentile rank of EPSS score among Peer Group
As of 2026-07-28
Model: v2026.06.15
This CVE's current EPSS score of 0.0318 is in the 76th percentile among its peer group of 51,553 CVEs.

Social Chatter

The average CVE in this peer group has 0.0 Twitter, 0.0 Reddit, 0.1 Bluesky, 0.1 Mastodon, and 0.4 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 (3)

redhatpatch availablevia redhat_api
Product: Red Hat Enterprise Linux 6Fixed in: libvirt-0:0.10.2-64.el6
View patch
redhatpatch availablevia redhat_api
Product: Red Hat Enterprise Linux 7Fixed in: libvirt-0:3.9.0-14.el7_5.4
View patch
redhatpatch availablevia redhat_api
Product: Red Hat Storage 3 for RHEL 6Fixed in: libvirt-0:0.10.2-64.el6
View patch

Vendor Advisories (1)

redhatCVE-2018-5748Low

libvirt: Resource exhaustion via qemuMonitorIORead() method

Jan 16, 2018

References

access.redhat.com / errata/RHSA-2018:1396
Third Party Advisory
access.redhat.com / errata/RHSA-2018:1929
Third Party Advisory
lists.debian.org / debian-lts-announce/2018/03/msg00018.html
Mailing ListThird Party Advisory
debian.org / security/2018/dsa-4137
Third Party Advisory
redhat.com / archives/libvir-list/2018-January/msg00527.html
PatchThird Party Advisory
securityfocus.com / bid/102825
Third Party AdvisoryVDB Entry