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CVE-2018-12893

22
FAUCET Score

CVE-2018-12893 is a Denial of Service vulnerability affecting Xen through 4.10.x on x86 systems that have applied the XSA-260 fix. A malicious x86 PV guest can trigger a safety check oversight, causing Xen to crash. This vulnerability has a CVSS score of 6.5 (Medium), indicating a local attack vector with low complexity, requiring low privileges, and resulting in high impact to availability. There is no known active exploitation, public 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:*:*:*:*:*:*:*:x86
9.0CPE matchmatch criteria
cpe:2.3:o:debian:debian_linux:9.0:*:*:*:*:*:*:*

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
0.41%
Probability of exploitation in next 30 days
EPSS Percentile
34.0%
Percentile rank of EPSS score among Peer Group
As of 2026-07-28
Model: v2026.06.15
This CVE's current EPSS score of 0.0041 is in the 89th percentile among its peer group of 15,940 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 Patches (2)

redhatworkaround availablevia nvd_reference
View patch
citrixvendor investigatingvia nvd_reference
View patch

Vendor Advisories (1)

redhatCVE-2018-12893Moderate

xen: x86 DB exception safety check can be triggered by a guest (XSA-265)

Jun 27, 2018

References

bugzilla.redhat.com / show_bug.cgi
Issue TrackingMitigationThird Party Advisory
lists.debian.org / debian-lts-announce/2018/11/msg00013.html
security.gentoo.org / glsa/201810-06
support.citrix.com / article/CTX235748
Vendor Advisory
debian.org / security/2018/dsa-4236
Third Party Advisory
openwall.com / lists/oss-security/2018/06/27/11
Mailing ListMitigationPatchThird Party Advisory
securityfocus.com / bid/104572
Third Party AdvisoryVDB Entry
securitytracker.com / id/1041202
Third Party AdvisoryVDB Entry
xenbits.xen.org / xsa/advisory-265.html
MitigationPatchVendor Advisory