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CVE-2016-3960

28
FAUCET Score

CVE-2016-3960 is an integer overflow vulnerability in the x86 shadow pagetable code of Xen, affecting various Fedora and Oracle VM products utilizing Xen. This flaw allows a local guest OS user to trigger a denial of service (host crash) or potentially escalate privileges. With a CVSS score of 8.8 (HIGH), it has a low attack complexity and requires local user privileges, but can lead to high confidentiality, integrity, and availability impacts. There is no evidence of active exploitation, public exploit code (Metasploit, Nuclei, ExploitDB), nor significant community discussion or media coverage surrounding this vulnerability.

Impacted Technologies

VendorProductVersion(s)CPE
Range not provided by sourceCPE matchmatch criteria
cpe:2.3:o:xen:xen:-:*:*:*:*:*:*:*
22CPE matchmatch criteria
cpe:2.3:o:fedoraproject:fedora:22:*:*:*:*:*:*:*
23CPE matchmatch criteria
cpe:2.3:o:fedoraproject:fedora:23:*:*:*:*:*:*:*
24CPE matchmatch criteria
cpe:2.3:o:fedoraproject:fedora:24:*:*:*:*:*:*:*
3.2CPE matchmatch criteria
cpe:2.3:o:oracle:vm_server:3.2:*:*:*:*:*:*:*

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
0.46%
Probability of exploitation in next 30 days
EPSS Percentile
37.1%
Percentile rank of EPSS score among Peer Group
As of 2026-07-27
Model: v2026.06.15
This CVE's current EPSS score of 0.0046 is in the 77th percentile among its peer group of 17,061 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 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-2016-3960Moderate

xen: x86 shadow pagetables: address width overflow (XSA-173)

Apr 18, 2016

References

lists.fedoraproject.org / pipermail/package-announce/2016-April/183275.html
Third Party Advisory
lists.fedoraproject.org / pipermail/package-announce/2016-May/183350.html
Third Party Advisory
lists.fedoraproject.org / pipermail/package-announce/2016-May/184209.html
Third Party Advisory
support.citrix.com / article/CTX209443
debian.org / security/2016/dsa-3554
oracle.com / technetwork/topics/security/ovmbulletinjul2016-3090546.html
Vendor Advisory
securityfocus.com / bid/86318
securitytracker.com / id/1035587
xenbits.xen.org / xsa/advisory-173.html
PatchVendor Advisory