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CVE-2015-2751

19
FAUCET Score

CVE-2015-2751 describes a denial-of-service vulnerability affecting Xen versions 4.3.x, 4.4.x, and 4.5.x when configured with toolstack disaggregation, impacting Fedora and Xen products. This vulnerability allows remote domains with partial management control to cause a host lock through unspecified domctl operations. With a CVSS score of 7.1 (AV:N/AC:M/Au:N/C:N/I:N/A:C), it indicates a network-exploitable vulnerability with medium attack complexity leading to a complete loss of availability. There is no evidence of active exploitation, public exploit code (Metasploit, Nuclei, ExploitDB), or significant community discussion or media coverage surrounding this CVE.

Impacted Technologies

VendorProductVersion(s)CPE
4.3.0CPE matchmatch criteria
cpe:2.3:o:xen:xen:4.3.0:*:*:*:*:*:*:*
4.3.1CPE matchmatch criteria
cpe:2.3:o:xen:xen:4.3.1:*:*:*:*:*:*:*
4.3.2CPE matchmatch criteria
cpe:2.3:o:xen:xen:4.3.2:*:*:*:*:*:*:*
4.4.0CPE matchmatch criteria
cpe:2.3:o:xen:xen:4.4.0:*:*:*:*:*:*:*
4.4.0CPE matchmatch criteria
cpe:2.3:o:xen:xen:4.4.0:rc1:*:*:*:*:*:*

CVSS Data

CVSS version used by this source: 2.0

7.1HIGH

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

Confidentiality Impact
NONE
Integrity Impact
NONE
Availability Impact
COMPLETE
Access Vector
NETWORK
Access Complexity
MEDIUM
Authentication
NONE
Exploitability Score
8.6
Impact Score
6.9
CvssVersion
2.0

Exploit Intelligence

EPSS Score
2.28%
Probability of exploitation in next 30 days
EPSS Percentile
81.3%
Percentile rank of EPSS score among Peer Group
As of 2026-07-27
Model: v2026.06.15
This CVE's current EPSS score of 0.0228 is in the 38th percentile among its peer group of 8,920 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

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-2015-2751Low

xen: certain domctl operations may be abused to lock up the host

Mar 31, 2015

References

lists.fedoraproject.org / pipermail/package-announce/2015-April/154574.html
Third Party Advisory
lists.fedoraproject.org / pipermail/package-announce/2015-April/154579.html
Third Party Advisory
lists.fedoraproject.org / pipermail/package-announce/2015-April/155198.html
lists.opensuse.org / opensuse-security-announce/2015-05/msg00018.html
security.gentoo.org / glsa/201504-04
securityfocus.com / bid/73443
securitytracker.com / id/1031997
Third Party AdvisoryVDB Entry
xenbits.xen.org / xsa/advisory-127.html
PatchVendor Advisory