Predictive Vulnerability Intelligence.

Product

  • Product
  • Pricing
  • Documentation

Company

  • About
  • Partnerships
  • Blog
  • Support

Legal

  • Terms
  • Privacy
  • Data Licensing

© 2026 FAUCET Technologies LLC. All rights reserved.

CVE-2018-7550

27
FAUCET Score

CVE-2018-7550 is a critical vulnerability affecting Quick Emulator (QEMU), as well as Canonical, Debian, and Red Hat distributions. It allows a local guest OS user to execute arbitrary code on the QEMU host by manipulating multiboot parameters, leading to an out-of-bounds memory access. Rated with a CVSS score of 8.8 (High), this vulnerability has a low attack complexity and requires local access, but can result in complete compromise of confidentiality, integrity, and availability on the host system. Despite its high severity, there is no evidence of active exploitation, public exploit code (Metasploit, Nuclei, ExploitDB), or significant community discussion or media coverage.

Impacted Technologies

VendorProductVersion(s)CPE
<= 2.11.1CPE matchmatch criteria
cpe:2.3:a:qemu:qemu:*:*:*:*:*:*:*:*
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:*:*:*:*:*:*:*
14.04CPE matchmatch criteria
cpe:2.3:o:canonical:ubuntu_linux:14.04:*:*:*:lts:*:*:*

CVSS Data

CVSS version used by this source: 3.1

8.8HIGH

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

Attack Vector
LOCAL
Attack Complexity
LOW
Privileges Required
LOW
User Interaction
NONE
Scope
CHANGED
Confidentiality Impact
HIGH
Integrity Impact
HIGH
Availability Impact
HIGH
Exploitability Score
2.0
Impact Score
6.0
CvssVersion
3.1

Exploit Intelligence

EPSS Score
0.61%
Probability of exploitation in next 30 days
EPSS Percentile
45.8%
Percentile rank of EPSS score among Peer Group
As of 2026-07-27
Model: v2026.06.15
This CVE's current EPSS score of 0.0061 is in the 84th percentile among its peer group of 17,070 CVEs.

Social Chatter

The average CVE in this peer group has 0.0 Twitter, 0.1 Reddit, 0.2 Bluesky, 0.1 Mastodon, and 0.2 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 (9)

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_5.2
View patch
redhatpatch availablevia redhat_api
Product: Red Hat Enterprise Linux 7Fixed in: qemu-kvm-10:1.5.3-156.el7_5.5
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_5.3
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_5.3
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_5.3
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_5.3
View patch
redhatvendor investigatingvia nvd_reference
View patch
redhatend of lifevia redhat_api
Product: Red Hat Enterprise Linux OpenStack Platform 7 (Kilo)Fixed in: qemu-kvm-rhev
redhatend of lifevia redhat_api
Product: Red Hat OpenStack Platform 11 (Ocata)Fixed in: qemu-kvm-rhev

Vendor Advisories (1)

redhatCVE-2018-7550Moderate

QEMU: i386: multiboot OOB access while loading kernel image

Feb 27, 2018

References

access.redhat.com / errata/RHSA-2018:1369
Third Party Advisory
access.redhat.com / errata/RHSA-2018:2462
Third Party Advisory
bugzilla.redhat.com / show_bug.cgi
Issue TrackingVendor Advisory
github.com / orangecertcc/security-research/security/advisories/GHSA-f49v-45qp-cv53
lists.debian.org / debian-lts-announce/2018/04/msg00015.html
Mailing ListThird Party Advisory
lists.debian.org / debian-lts-announce/2018/04/msg00016.html
Mailing ListThird Party Advisory
lists.debian.org / debian-lts-announce/2018/09/msg00007.html
Mailing ListThird Party Advisory
lists.gnu.org / archive/html/qemu-devel/2018-02/msg06890.html
Mailing ListPatch
usn.ubuntu.com / 3649-1
Third Party Advisory
debian.org / security/2018/dsa-4213
Third Party Advisory
securityfocus.com / bid/103181
Third Party AdvisoryVDB Entry