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CVE-2018-15746

20
FAUCET Score

CVE-2018-15746 describes a denial-of-service vulnerability in QEMU, specifically within the qemu-seccomp.c component, affecting QEMU installations. A local guest OS user can exploit this by manipulating seccomp policies for non-main threads, leading to a guest crash. Rated Medium (CVSS 5.5), this vulnerability requires local access and has a high impact on availability, but no impact on confidentiality or integrity. There is no evidence of active exploitation, publicly available exploit code, or significant community discussion or media coverage.

Impacted Technologies

VendorProductVersion(s)CPE
<= 3.0.1CPE matchmatch criteria
cpe:2.3:a:qemu:qemu:*:*:*:*:*:*:*:*

CVSS Data

CVSS version used by this source: 3.1

5.5MEDIUM

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

Attack Vector
LOCAL
Attack Complexity
LOW
Privileges Required
LOW
User Interaction
NONE
Scope
UNCHANGED
Confidentiality Impact
NONE
Integrity Impact
NONE
Availability Impact
HIGH
Exploitability Score
1.8
Impact Score
3.6
CvssVersion
3.1

Exploit Intelligence

EPSS Score
0.50%
Probability of exploitation in next 30 days
EPSS Percentile
39.9%
Percentile rank of EPSS score among Peer Group
As of 2026-07-27
Model: v2026.06.15
This CVE's current EPSS score of 0.0050 is in the 92nd percentile among its peer group of 15,940 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 (10)

redhatpatch availablevia redhat_api
Product: Red Hat Enterprise Linux 7Fixed in: qemu-kvm-10:1.5.3-175.el7
View patch
redhatpatch availablevia redhat_api
Product: Red Hat Enterprise Linux 7Fixed in: qemu-kvm-ma-10:2.12.0-48.el7
View patch
redhatpatch availablevia redhat_api
Product: Red Hat OpenStack Platform 10.0 (Newton)Fixed in: qemu-kvm-rhev-10:2.12.0-33.el7
View patch
redhatpatch availablevia redhat_api
Product: Red Hat OpenStack Platform 13.0 (Queens)Fixed in: qemu-kvm-rhev-10:2.12.0-33.el7
View patch
redhatpatch availablevia redhat_api
Product: Red Hat OpenStack Platform 14.0 (Rocky)Fixed in: qemu-kvm-rhev-10:2.12.0-33.el7
View patch
redhatpatch availablevia redhat_api
Product: Red Hat Virtualization 4 for Red Hat Enterprise Linux 7Fixed in: qemu-kvm-rhev-10:2.12.0-48.el7
View patch
redhatpatch availablevia redhat_api
Product: Red Hat Virtualization Engine 4.3Fixed in: qemu-kvm-rhev-10:2.12.0-48.el7
View patch
redhatvendor investigatingvia redhat_api
Product: Red Hat OpenStack Platform 8 (Liberty)Fixed in: qemu-kvm-rhev
redhatvendor investigatingvia redhat_api
Product: Red Hat OpenStack Platform 9 (Mitaka)Fixed in: qemu-kvm-rhev
redhatno patchvia redhat_api
Product: Red Hat OpenStack Platform 12 (Pike)Fixed in: qemu-kvm-rhev

Vendor Advisories (1)

redhatCVE-2018-15746Low

QEMU: seccomp: blacklist is not applied to all threads

Aug 13, 2018

References

access.redhat.com / errata/RHSA-2019:2425
Third Party Advisory
lists.gnu.org / archive/html/qemu-devel/2018-08/msg04892.html
Mailing ListPatchThird Party Advisory
openwall.com / lists/oss-security/2018/08/28/6
Mailing ListThird Party Advisory