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CVE-2014-7188

21
FAUCET Score

CVE-2014-7188 describes a denial-of-service vulnerability in Xen 4.1 through 4.4.x, specifically within the hvm_msr_read_intercept function. This flaw allows local HVM guests to trigger a host crash or potentially read sensitive data from the hypervisor or other guests due to improper MSR range handling for x2APIC emulation. With a CVSS score of 8.3, it is considered a high-severity vulnerability, requiring adjacent network access and low attack complexity to achieve complete confidentiality, integrity, and availability impact. While there is no evidence of active exploitation, no public exploit code, and it is not on the KEV catalog, it has garnered some community discussion and media coverage.

Impacted Technologies

VendorProductVersion(s)CPE
4.1.0CPE matchmatch criteria
cpe:2.3:o:xen:xen:4.1.0:*:*:*:*:*:*:*
4.1.1CPE matchmatch criteria
cpe:2.3:o:xen:xen:4.1.1:*:*:*:*:*:*:*
4.1.2CPE matchmatch criteria
cpe:2.3:o:xen:xen:4.1.2:*:*:*:*:*:*:*
4.1.3CPE matchmatch criteria
cpe:2.3:o:xen:xen:4.1.3:*:*:*:*:*:*:*
4.1.4CPE matchmatch criteria
cpe:2.3:o:xen:xen:4.1.4:*:*:*:*:*:*:*

CVSS Data

CVSS version used by this source: 2.0

8.3HIGH

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

Confidentiality Impact
COMPLETE
Integrity Impact
COMPLETE
Availability Impact
COMPLETE
Access Vector
ADJACENT_NETWORK
Access Complexity
LOW
Authentication
NONE
Exploitability Score
6.5
Impact Score
10.0
CvssVersion
2.0

Exploit Intelligence

EPSS Score
0.86%
Probability of exploitation in next 30 days
EPSS Percentile
54.7%
Percentile rank of EPSS score among Peer Group
As of 2026-07-27
Model: v2026.06.15
This CVE's current EPSS score of 0.0086 is in the 67th percentile among its peer group of 1,875 CVEs.

Social Chatter

No social media mentions found for this CVE.

The average CVE in this peer group has 0.0 Twitter, 0.1 Reddit, 0.1 Bluesky, 0.1 Mastodon, and 0.2 GitHub mentions.

Media Mentions

The average CVE in this peer group has 0.2 InfoSec Media, 0.0 Vendor Blog, and 0.0 Security Researcher mentions.

Remediation

Vendor Advisories (1)

redhatCVE-2014-7188Important

kernel: xen: Improper MSR range used for x2APIC emulation (xsa108)

Oct 1, 2014

References

lists.fedoraproject.org / pipermail/package-announce/2014-October/140199.html
lists.fedoraproject.org / pipermail/package-announce/2014-October/140418.html
lists.fedoraproject.org / pipermail/package-announce/2014-October/140483.html
lists.opensuse.org / opensuse-security-announce/2014-10/msg00002.html
lists.opensuse.org / opensuse-security-announce/2014-10/msg00003.html
secunia.com / advisories/61664
secunia.com / advisories/61858
secunia.com / advisories/61890
security.gentoo.org / glsa/glsa-201412-42.xml
exchange.xforce.ibmcloud.com / vulnerabilities/96785
support.citrix.com / article/CTX200218
support.citrix.com / article/CTX201794
c7zero.info / stuff/csw2017_ExploringYourSystemDeeper_updated.pdf
debian.org / security/2014/dsa-3041
securityfocus.com / bid/70198
securitytracker.com / id/1030936
xenbits.xen.org / xsa/advisory-108.html
PatchVendor Advisory