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CVE-2016-2270

20
FAUCET Score

CVE-2016-2270 is a denial-of-service vulnerability affecting Xen 4.6.x and earlier, as well as products from Debian, Fedora, and Oracle. It allows a local guest administrator to trigger a host reboot by manipulating memory-mapped I/O (MMIO) pages with differing cachability settings. Rated MEDIUM with a CVSS score of 6.8, this vulnerability has a high impact on availability, requiring high privileges to exploit. There is no evidence of active exploitation, public exploit code, or significant community discussion surrounding this CVE.

Impacted Technologies

VendorProductVersion(s)CPE
7.0CPE matchmatch criteria
cpe:2.3:o:debian:debian_linux:7.0:*:*:*:*:*:*:*
8.0CPE matchmatch criteria
cpe:2.3:o:debian:debian_linux:8.0:*:*:*:*:*:*:*
22CPE matchmatch criteria
cpe:2.3:o:fedoraproject:fedora:22:*:*:*:*:*:*:*
23CPE matchmatch criteria
cpe:2.3:o:fedoraproject:fedora:23:*:*:*:*:*:*:*
<= 4.6.1CPE matchmatch criteria
cpe:2.3:o:xen:xen:*:*:*:*:*:*:*:*

CVSS Data

CVSS version used by this source: 3.0

6.8MEDIUM

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

Attack Vector
NETWORK
Attack Complexity
LOW
Privileges Required
HIGH
User Interaction
NONE
Scope
CHANGED
Confidentiality Impact
NONE
Integrity Impact
NONE
Availability Impact
HIGH
Exploitability Score
2.3
Impact Score
4.0
CvssVersion
3.0

Exploit Intelligence

EPSS Score
1.48%
Probability of exploitation in next 30 days
EPSS Percentile
71.3%
Percentile rank of EPSS score among Peer Group
As of 2026-07-27
Model: v2026.06.15
This CVE's current EPSS score of 0.0148 is in the 78th percentile among its peer group of 3,562 CVEs.

Social Chatter

The average CVE in this peer group has 0.0 Twitter, 0.0 Reddit, 0.1 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)

oraclevendor investigatingvia nvd_reference
View patch
redhatend of lifevia redhat_api
Product: Red Hat Enterprise Linux 5Fixed in: xen

Vendor Advisories (1)

redhatCVE-2016-2270Moderate

xen: inconsistent cachability flags on guest mappings (XSA-154)

Feb 17, 2016

References

lists.fedoraproject.org / pipermail/package-announce/2016-February/177990.html
Third Party Advisory
lists.fedoraproject.org / pipermail/package-announce/2016-March/178518.html
Third Party Advisory
security.gentoo.org / glsa/201604-03
debian.org / security/2016/dsa-3519
Third Party Advisory
oracle.com / technetwork/topics/security/ovmbulletinjul2016-3090546.html
Vendor Advisory
securitytracker.com / id/1035042
Third Party AdvisoryVDB Entry
xenbits.xen.org / xsa/advisory-154.html
PatchVendor Advisory