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CVE-2016-9103

21
FAUCET Score

CVE-2016-9103 is a medium-severity vulnerability affecting QEMU, specifically its v9fs_xattrcreate function. It allows local guest OS administrators to read sensitive host heap memory information by accessing xattribute values before they are properly written. The attack requires high privileges on the guest OS and has a high impact on confidentiality. There is no evidence of active exploitation, public exploit code, or significant community discussion surrounding this vulnerability.

Impacted Technologies

VendorProductVersion(s)CPE
<= 2.7.1CPE matchmatch criteria
cpe:2.3:a:qemu:qemu:*:*:*:*:*:*:*:*
8.0CPE matchmatch criteria
cpe:2.3:o:debian:debian_linux:8.0:*:*:*:*:*:*:*

CVSS Data

CVSS version used by this source: 3.1

6.0MEDIUM

CVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:C/C:H/I:N/A:N

Attack Vector
LOCAL
Attack Complexity
LOW
Privileges Required
HIGH
User Interaction
NONE
Scope
CHANGED
Confidentiality Impact
HIGH
Integrity Impact
NONE
Availability Impact
NONE
Exploitability Score
1.5
Impact Score
4.0
CvssVersion
3.1

Exploit Intelligence

EPSS Score
0.39%
Probability of exploitation in next 30 days
EPSS Percentile
32.0%
Percentile rank of EPSS score among Peer Group
As of 2026-07-26
Model: v2026.06.15
This CVE's current EPSS score of 0.0039 is in the 81st percentile among its peer group of 3,720 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)

redhatend of lifevia redhat_api
Product: Red Hat Enterprise Linux 7Fixed in: qemu-kvm
redhatend of lifevia redhat_api
Product: Red Hat Enterprise Linux 7Fixed in: qemu-kvm-rhev

Vendor Advisories (1)

redhatCVE-2016-9103Low

Qemu: 9pfs: information leakage via xattr

Oct 8, 2016

References

git.qemu.org
lists.debian.org / debian-lts-announce/2018/11/msg00038.html
Mailing ListThird Party Advisory
lists.gnu.org / archive/html/qemu-devel/2016-10/msg01790.html
PatchThird Party Advisory
security.gentoo.org / glsa/201611-11
Third Party Advisory
openwall.com / lists/oss-security/2016/10/28/1
Mailing ListThird Party Advisory
openwall.com / lists/oss-security/2016/10/30/7
Mailing ListThird Party Advisory
securityfocus.com / bid/93955
Third Party AdvisoryVDB Entry