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CVE-2018-5244

22
FAUCET Score

CVE-2018-5244 is a memory leak vulnerability affecting Xen 4.10, specifically within its MSR emulation infrastructure. A guest OS administrator can trigger a denial of service by repeatedly rebooting, leading to host memory exhaustion. This medium-severity vulnerability (CVSS 6.5) 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 surrounding this CVE.

Impacted Technologies

VendorProductVersion(s)CPE
>= 4.10.0CPE matchmatch criteria
cpe:2.3:o:xen:xen:*:*:*:*:*:*:*:*

CVSS Data

CVSS version used by this source: 3.0

6.5MEDIUM

CVSS:3.0/AV:L/AC:L/PR:L/UI:N/S:C/C:N/I:N/A:H

Attack Vector
LOCAL
Attack Complexity
LOW
Privileges Required
LOW
User Interaction
NONE
Scope
CHANGED
Confidentiality Impact
NONE
Integrity Impact
NONE
Availability Impact
HIGH
Exploitability Score
2.0
Impact Score
4.0
CvssVersion
3.0

Exploit Intelligence

EPSS Score
0.37%
Probability of exploitation in next 30 days
EPSS Percentile
29.7%
Percentile rank of EPSS score among Peer Group
As of 2026-07-27
Model: v2026.06.15
This CVE's current EPSS score of 0.0037 is in the 86th percentile among its peer group of 15,938 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

Vendor Advisories (1)

redhatCVE-2018-5244Moderate

xen: memory leak with MSR emulation (XSA-253)

Jan 4, 2018

References

security.gentoo.org / glsa/201810-06
xenbits.xen.org / xsa/advisory-253.html
Issue TrackingMitigationVendor Advisory
securityfocus.com / bid/102433
Third Party AdvisoryVDB Entry
securitytracker.com / id/1040774