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CVE-2018-7541

27
FAUCET Score

CVE-2018-7541 is a high-severity vulnerability affecting Xen through version 4.10.x, including Debian distributions. It allows a guest OS user to trigger a hypervisor crash (Denial of Service) or escalate privileges by manipulating grant-table transitions from v2 to v1. With a CVSS score of 8.8, this vulnerability is easily exploitable locally with low privileges, leading to high impact on confidentiality, integrity, and availability. Currently, there is no public exploit code available, nor is it listed on the KEV catalog, indicating no active exploitation. Community discussion and media coverage for this CVE are minimal.

Impacted Technologies

VendorProductVersion(s)CPE
<= 4.10.0CPE matchmatch criteria
cpe:2.3:o:xen:xen:*:*:*:*:*:*:*:*
9.0CPE matchmatch criteria
cpe:2.3:o:debian:debian_linux:9.0:*:*:*:*:*:*:*

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
0.43%
Probability of exploitation in next 30 days
EPSS Percentile
35.5%
Percentile rank of EPSS score among Peer Group
As of 2026-07-27
Model: v2026.06.15
This CVE's current EPSS score of 0.0043 is in the 76th 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

Vendor Advisories (1)

redhatCVE-2018-7541Important

xen: grant table v2 -> v1 transition may crash Xen (XSA-255)

Feb 27, 2018

References

lists.debian.org / debian-lts-announce/2018/03/msg00003.html
Third Party Advisory
lists.debian.org / debian-lts-announce/2018/11/msg00013.html
security.gentoo.org / glsa/201810-06
support.citrix.com / article/CTX232096
support.citrix.com / article/CTX232655
debian.org / security/2018/dsa-4131
Third Party Advisory
xenbits.xen.org / xsa/advisory-255.html
Vendor Advisory
securityfocus.com / bid/103177
securitytracker.com / id/1040775