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CVE-2017-12135

24
FAUCET Score

CVE-2017-12135 describes a vulnerability in Xen, Citrix XenServer, and Debian Xen that allows a local guest OS user to trigger a denial of service, potentially leak sensitive information, or escalate privileges. With a CVSS score of 8.8 (High), this vulnerability has a low attack complexity and requires local access, but can lead to high impact on confidentiality, integrity, and availability. Despite its severity, there is no known active exploitation, publicly available exploit code, or significant community discussion or media coverage surrounding this CVE.

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
0.45%
Probability of exploitation in next 30 days
EPSS Percentile
36.9%
Percentile rank of EPSS score among Peer Group
As of 2026-07-27
Model: v2026.06.15
This CVE's current EPSS score of 0.0045 is in the 77th percentile among its peer group of 17,070 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-2017-12135Important

xen: possibly unbounded recursion in grant table code (XSA-226)

Aug 15, 2017

References

bugzilla.redhat.com / show_bug.cgi
Issue TrackingMitigationPatchThird 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/2017/08/15/1
Mailing ListMitigationThird Party Advisory
openwall.com / lists/oss-security/2017/08/17/6
Mailing ListMitigationThird Party Advisory
openwall.com / lists/oss-security/2020/04/14/4
securityfocus.com / bid/100344
Third Party AdvisoryVDB Entry
securitytracker.com / id/1039178
Third Party AdvisoryVDB Entry
xenbits.xen.org / xsa/advisory-226.html
MitigationPatchVendor Advisory