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CVE-2017-12137

27
FAUCET Score

CVE-2017-12137 is a high-severity privilege escalation vulnerability in Xen's arch/x86/mm.c, affecting various Xen and Citrix XenServer products. It allows a local PV guest OS user to gain host OS privileges through issues related to map_grant_ref. The attack has low complexity and requires low privileges, but can lead to complete compromise of confidentiality, integrity, and availability of the host. There is no public exploit code available, nor is there evidence of active exploitation or significant community discussion.

Impacted Technologies

VendorProductVersion(s)CPE
All Versions ImpactedCPE matchmatch criteria
cpe:2.3:o:xen:xen:*:*:*:*:*:*:*:*
6.0.2CPE matchmatch criteria
cpe:2.3:a:citrix:xenserver:6.0.2:*:*:*:*:*:*:*
6.2.0CPE matchmatch criteria
cpe:2.3:a:citrix:xenserver:6.2.0:*:*:*:*:*:*:*
6.5CPE matchmatch criteria
cpe:2.3:a:citrix:xenserver:6.5:*:*:*:*:*:*:*
7.0CPE matchmatch criteria
cpe:2.3:a:citrix:xenserver:7.0:*:*:*:*:*:*:*

CVSS Data

CVSS version used by this source: 3.0

8.8HIGH

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

Attack Vector
LOCAL
Attack Complexity
LOW
Privileges Required
LOW
User Interaction
NONE
Scope
CHANGED
Confidentiality Impact
HIGH
Integrity Impact
HIGH
Availability Impact
HIGH
Exploitability Score
2.0
Impact Score
6.0
CvssVersion
3.0

Exploit Intelligence

EPSS Score
0.44%
Probability of exploitation in next 30 days
EPSS Percentile
35.7%
Percentile rank of EPSS score among Peer Group
As of 2026-07-24
Model: v2026.06.15
This CVE's current EPSS score of 0.0044 is in the 76th percentile among its peer group of 16,985 CVEs.

Social Chatter

The average CVE in this peer group has 0.0 Twitter, 0.1 Reddit, 0.2 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 0.3 InfoSec Media, 0.0 Vendor Blog, and 0.0 Security Researcher mentions.

Remediation

Patch Available

Vendor Patches (3)

citrixpatch availablevia nvd_reference
View patch
redhatpatch availablevia nvd_reference
View patch
redhatend of lifevia redhat_api
Product: Red Hat Enterprise Linux 5Fixed in: xen

Vendor Advisories (1)

redhatCVE-2017-12137Important

xen: x86: PV privilege escalation via map_grant_ref (XSA-227)

Aug 15, 2017

References

bugzilla.redhat.com / show_bug.cgi
Issue TrackingPatchThird Party Advisory
security.gentoo.org / glsa/201801-14
Third Party Advisory
support.citrix.com / article/CTX225941
PatchThird Party Advisory
debian.org / security/2017/dsa-3969
Third Party Advisory
openwall.com / lists/oss-security/2017/08/15/2
Mailing ListMitigationPatchThird Party Advisory
securityfocus.com / bid/100342
Third Party AdvisoryVDB Entry
securitytracker.com / id/1039174
Third Party AdvisoryVDB Entry
xenbits.xen.org / xsa/advisory-227.html
PatchVendor Advisory