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CVE-2015-2151

19
FAUCET Score

CVE-2015-2151 describes a vulnerability in the x86 emulator of Xen versions 3.2.x through 4.5.x, affecting various Debian and Fedora distributions. Local guest users can exploit this flaw by manipulating segment overrides for instructions with register operands. This can lead to sensitive information disclosure, denial of service through memory corruption, or potentially arbitrary code execution. Despite a CVSS score of 7.2, indicating high severity, there is no evidence of active exploitation, publicly available exploit code, or significant community discussion or media coverage.

Impacted Technologies

VendorProductVersion(s)CPE
20CPE matchmatch criteria
cpe:2.3:o:fedoraproject:fedora:20:*:*:*:*:*:*:*
21CPE matchmatch criteria
cpe:2.3:o:fedoraproject:fedora:21:*:*:*:*:*:*:*
22CPE matchmatch criteria
cpe:2.3:o:fedoraproject:fedora:22:*:*:*:*:*:*:*
7.0CPE matchmatch criteria
cpe:2.3:o:debian:debian_linux:7.0:*:*:*:*:*:*:*
3.2.0CPE matchmatch criteria
cpe:2.3:o:xen:xen:3.2.0:*:*:*:*:*:*:*

CVSS Data

CVSS version used by this source: 2.0

7.2HIGH

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

Confidentiality Impact
COMPLETE
Integrity Impact
COMPLETE
Availability Impact
COMPLETE
Access Vector
LOCAL
Access Complexity
LOW
Authentication
NONE
Exploitability Score
3.9
Impact Score
10.0
CvssVersion
2.0

Exploit Intelligence

EPSS Score
0.57%
Probability of exploitation in next 30 days
EPSS Percentile
43.8%
Percentile rank of EPSS score among Peer Group
As of 2026-07-27
Model: v2026.06.15
This CVE's current EPSS score of 0.0057 is in the 65th percentile among its peer group of 3,241 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 0.5 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

Patch Available

Vendor Patches (1)

redhatpatch availablevia redhat_api
Product: Red Hat Enterprise Linux 5Fixed in: kernel-0:2.6.18-409.el5
View patch

Vendor Advisories (1)

redhatCVE-2015-2151Important

xen: hypervisor memory corruption due to x86 emulator flaw (xsa123)

Mar 10, 2015

References

kb.juniper.net / InfoCenter/index
lists.fedoraproject.org / pipermail/package-announce/2015-March/152483.html
Third Party Advisory
lists.fedoraproject.org / pipermail/package-announce/2015-March/152588.html
Third Party Advisory
lists.fedoraproject.org / pipermail/package-announce/2015-March/152776.html
Third Party Advisory
lists.opensuse.org / opensuse-security-announce/2015-04/msg00014.html
security.gentoo.org / glsa/201604-03
support.citrix.com / article/CTX200484
www1.huawei.com / en/security/psirt/security-bulletins/security-advisories/hw-423503.htm
debian.org / security/2015/dsa-3181
Third Party Advisory
oracle.com / technetwork/topics/security/linuxbulletinjan2016-2867209.html
securityfocus.com / bid/73015
securitytracker.com / id/1031806
Third Party AdvisoryVDB Entry
securitytracker.com / id/1031903
Third Party AdvisoryVDB Entry
xenbits.xen.org / xsa/advisory-123.html
PatchVendor Advisory