CVE-2015-4106

QEMU does not properly restrict write access to the PCI config space for certain PCI pass-through devices, which might allow local x86 HVM guests to gain privileges, cause a denial of service (host crash), obtain sensitive information, or possibly have other unspecified impact via unknown vectors.

Published: 2015-06-03 Last update: 2026-06-16 Assigner: [email protected] Source: [email protected]
NVD Status：Modified，CVE State: published
View at NVD, CVE.org, EUVD

CVE-2015-4106 is rated Low Risk (32/100): CVSS Medium severity, with low exploitation likelihood (EPSS 0.48%). Monitor for updates and reassess as exploit intelligence or EPSS changes.

Risk is dynamic; we continuously reassess and refresh what is shown on this page as upstream context changes.

Exploit prediction scoring system (EPSS) score for CVE-2015-4106

EPSS lead: Daily EPSS estimates relative likelihood of exploitation; percentile ranks this CVE among scored vulnerabilities (higher = more severe relative rank).

# Date Old EPSS score New EPSS score Delta (New - Old)
1 2026-06-15 0.06% 0.48% +0.42%
2 2023-03-07 1.55% 0.06% -1.48%
3 2022-02-04 — 1.55% —

Full EPSS history (3 records total)

Common vulnerability scoring system (CVSS) metrics for CVE-2015-4106

CVSS metrics for this CVE.

Base score Version Severity Vector Exploitability Impact Score source
4.6 2.0 MEDIUM
AV:L/AC:L/Au:N/C:P/I:P/A:P Click to expand
Access vector (AV:L)
Requires local access to the target system.
Access complexity (AC:L)
Exploitation conditions are straightforward and predictable.
Authentication (AU:N)
No authentication is required.
Confidentiality impact (C:P)
Partial confidentiality impact.
Integrity impact (I:P)
Partial integrity impact.
Availability impact (A:P)
Partial availability impact.
 3.9 6.4 [email protected]

Weakness enumeration for CVE-2015-4106

OS Trackers for CVE-2015-4106

vendor priority summary link
debian not yet assigned CVE-2015-4106 not yet assigned priority: Debian including 2 source packages (qemu, xen), 10 status rows across 5 suites (bookworm, bullseye, forky, sid, trixie): resolved 10. https://security-tracker.debian.org/tracker/CVE-2015-4106
gentoo normal CVE-2015-4106: 1 GLSA(s) (201604-03), 4 atom(s) (app-emulation/pvgrub, app-emulation/xen, app-emulation/xen-pvgrub, app-emulation/xen-tools); latest impact normal. https://bugs.gentoo.org/buglist.cgi?quicksearch=CVE-2015-4106
redhat medium — https://access.redhat.com/security/cve/CVE-2015-4106
ubuntu medium CVE-2015-4106 medium priority: Ubuntu including 3 source packages (qemu, qemu-kvm, xen), 15 status rows across 5 suites (precise, trusty, upstream, utopic, vivid): released 5, DNE 4, needed 2, not-affected 2, ignored 1, needs-triage 1. https://ubuntu.com/security/CVE-2015-4106

Affected software / configurations for CVE-2015-4106

Vendor Product Version Raw CPE
qemu qemu <= 2.3.1 cpe:2.3:a:qemu:qemu:*:*:*:*:*:*:*:*
debian debian_linux 7.0 cpe:2.3:o:debian:debian_linux:7.0:*:*:*:*:*:*:*
debian debian_linux 8.0 cpe:2.3:o:debian:debian_linux:8.0:*:*:*:*:*:*:*
fedoraproject fedora 20 cpe:2.3:o:fedoraproject:fedora:20:*:*:*:*:*:*:*
fedoraproject fedora 21 cpe:2.3:o:fedoraproject:fedora:21:*:*:*:*:*:*:*
fedoraproject fedora 22 cpe:2.3:o:fedoraproject:fedora:22:*:*:*:*:*:*:*
suse linux_enterprise_desktop 11 cpe:2.3:o:suse:linux_enterprise_desktop:11:sp3:*:*:*:*:*:*
suse linux_enterprise_desktop 12 cpe:2.3:o:suse:linux_enterprise_desktop:12:-:*:*:*:*:*:*
suse linux_enterprise_server 11 cpe:2.3:o:suse:linux_enterprise_server:11:sp1:*:*:ltss:*:*:*
suse linux_enterprise_server 11 cpe:2.3:o:suse:linux_enterprise_server:11:sp2:*:*:ltss:*:*:*
suse linux_enterprise_server 11 cpe:2.3:o:suse:linux_enterprise_server:11:sp3:*:*:*:-:*:*
suse linux_enterprise_server 12 cpe:2.3:o:suse:linux_enterprise_server:12:-:*:*:*:*:*:*
suse linux_enterprise_software_development_kit 11 cpe:2.3:o:suse:linux_enterprise_software_development_kit:11:sp3:*:*:*:*:*:*
suse linux_enterprise_software_development_kit 12 cpe:2.3:o:suse:linux_enterprise_software_development_kit:12:-:*:*:*:*:*:*
citrix xenserver 6.0 cpe:2.3:a:citrix:xenserver:6.0:*:*:*:*:*:*:*
citrix xenserver 6.0.2 cpe:2.3:a:citrix:xenserver:6.0.2:*:*:*:*:*:*:*
citrix xenserver 6.1.0 cpe:2.3:a:citrix:xenserver:6.1.0:*:*:*:*:*:*:*
citrix xenserver 6.2.0 cpe:2.3:a:citrix:xenserver:6.2.0:-:*:*:*:*:*:*
citrix xenserver 6.5 cpe:2.3:a:citrix:xenserver:6.5:-:*:*:*:*:*:*
canonical ubuntu_linux 12.04 cpe:2.3:o:canonical:ubuntu_linux:12.04:*:*:*:esm:*:*:*
canonical ubuntu_linux 14.04 cpe:2.3:o:canonical:ubuntu_linux:14.04:*:*:*:esm:*:*:*
canonical ubuntu_linux 14.10 cpe:2.3:o:canonical:ubuntu_linux:14.10:*:*:*:*:*:*:*
canonical ubuntu_linux 15.04 cpe:2.3:o:canonical:ubuntu_linux:15.04:*:*:*:*:*:*:*

References for CVE-2015-4106

URL Tags
http://lists.fedoraproject.org/pipermail/package-announce/2015-June/160154.html Third Party Advisory
http://lists.fedoraproject.org/pipermail/package-announce/2015-June/160171.html Third Party Advisory
http://lists.fedoraproject.org/pipermail/package-announce/2015-June/160685.html Third Party Advisory
http://lists.opensuse.org/opensuse-security-announce/2015-06/msg00004.html Mailing List Third Party Advisory
http://lists.opensuse.org/opensuse-security-announce/2015-06/msg00007.html Mailing List Third Party Advisory
http://lists.opensuse.org/opensuse-security-announce/2015-06/msg00029.html Mailing List Third Party Advisory
http://lists.opensuse.org/opensuse-security-announce/2015-06/msg00030.html Mailing List Third Party Advisory
http://support.citrix.com/article/CTX201145 Third Party Advisory
http://www.debian.org/security/2015/dsa-3284 Third Party Advisory
http://www.debian.org/security/2015/dsa-3286 Third Party Advisory
http://www.securityfocus.com/bid/74949 Third Party Advisory VDB Entry
http://www.securitytracker.com/id/1032467 Third Party Advisory VDB Entry
http://www.ubuntu.com/usn/USN-2630-1 Third Party Advisory
http://xenbits.xen.org/xsa/advisory-131.html Third Party Advisory
https://security.gentoo.org/glsa/201604-03 Third Party Advisory
https://support.citrix.com/article/CTX206006 Third Party Advisory
cvelogic Threat Intelligence