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CVE-2016-9816

22
FAUCET Score

CVE-2016-9816 describes a denial-of-service vulnerability in Xen through version 4.7.x, specifically affecting ARM guest operating systems. A local attacker within a guest OS can trigger a host crash by exploiting asynchronous aborts at EL2. This medium-severity vulnerability (CVSS 6.5) has a low attack complexity and requires local access, leading to a high impact on availability. There is no evidence of active exploitation, public exploit code, or significant community discussion surrounding this CVE.

Impacted Technologies

VendorProductVersion(s)CPE
4.7.0CPE matchmatch criteria
cpe:2.3:o:xen:xen:4.7.0:*:*:*:*:*:*:*
4.7.1CPE matchmatch criteria
cpe:2.3:o:xen:xen:4.7.1:*:*:*:*:*:*:*

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
0.47%
Probability of exploitation in next 30 days
EPSS Percentile
38.1%
Percentile rank of EPSS score among Peer Group
As of 2026-07-27
Model: v2026.06.15
This CVE's current EPSS score of 0.0047 is in the 91st percentile among its peer group of 15,938 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 (1)

redhatend of lifevia redhat_api
Product: Red Hat Enterprise Linux 5Fixed in: xen

Vendor Advisories (1)

redhatCVE-2016-9816Moderate

xen: ARM guests may induce host asynchronous abort (XSA-201)

Nov 29, 2016

References

security.gentoo.org / glsa/201612-56
openwall.com / lists/oss-security/2016/11/29/3
Mailing ListMitigationThird Party Advisory
openwall.com / lists/oss-security/2016/12/05/7
Mailing ListThird Party Advisory
securityfocus.com / bid/94581
Third Party AdvisoryVDB Entry
securitytracker.com / id/1037358
xenbits.xen.org / xsa/advisory-201.html
MitigationPatchVendor Advisory
xenbits.xen.org / xsa/xsa201-2.patch
PatchVendor Advisory