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CVE-2015-4106

14
FAUCET Score

CVE-2015-4106 describes a privilege escalation vulnerability in QEMU affecting Canonical, Citrix, Debian, Fedora, QEMU, and SUSE products. It stems from insufficient write access restrictions to the PCI config space for specific PCI pass-through devices. This local vulnerability, with low attack complexity, could allow x86 HVM guests to gain privileges, cause a denial of service, or leak sensitive information. There is no evidence of active exploitation, no public exploit code, and minimal community discussion, with its EPSS and FAUCET scores indicating low exploitability and risk.

Impacted Technologies

VendorProductVersion(s)CPE
<= 2.3.1CPE 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:*:*:*:*:*:*:*
20CPE matchmatch criteria
cpe:2.3:o:fedoraproject:fedora:20:*:*:*:*:*:*:*
21CPE matchmatch criteria
cpe:2.3:o:fedoraproject:fedora:21:*:*:*:*:*:*:*

CVSS Data

CVSS version used by this source: 2.0

4.6MEDIUM

AV:L/AC:L/Au:N/C:P/I:P/A:P

Confidentiality Impact
PARTIAL
Integrity Impact
PARTIAL
Availability Impact
PARTIAL
Access Vector
LOCAL
Access Complexity
LOW
Authentication
NONE
Exploitability Score
3.9
Impact Score
6.4
CvssVersion
2.0

Exploit Intelligence

EPSS Score
0.48%
Probability of exploitation in next 30 days
EPSS Percentile
39.0%
Percentile rank of EPSS score among Peer Group
As of 2026-07-28
Model: v2026.06.15
This CVE's current EPSS score of 0.0048 is in the 74th percentile among its peer group of 3,052 CVEs.

Social Chatter

No social media mentions found for this CVE.

The average CVE in this peer group has 0.0 Twitter, 0.0 Reddit, 0.1 Bluesky, 0.0 Mastodon, and 0.4 GitHub mentions.

Media Mentions

No media coverage found for this CVE.

The average CVE in this peer group has 0.0 InfoSec Media, 0.0 Vendor Blog, and 0.0 Security Researcher mentions.

Remediation

Vendor Patches (1)

redhatno patchvia redhat_api
Product: Red Hat Enterprise Linux 5Fixed in: xen

Vendor Advisories (1)

redhatCVE-2015-4106Moderate

xen: unmediated PCI register access in qemu (xsa-131)

Jun 2, 2015

References

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