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CVE-2016-9377

20
FAUCET Score

CVE-2016-9377 describes a denial-of-service vulnerability affecting Xen versions 4.5.x through 4.7.x on AMD systems lacking the NRip feature. A local HVM guest OS user can trigger a guest crash by exploiting miscalculations in IDT entries during emulated software interrupt generation. This vulnerability has a CVSS v3 score of 5.5 (Medium), indicating a local attack vector with low complexity, requiring low privileges, and resulting in high availability impact. There is no evidence of active exploitation, publicly available exploit code, or significant community discussion surrounding this CVE.

Impacted Technologies

VendorProductVersion(s)CPE
4.5.0CPE matchmatch criteria
cpe:2.3:o:xen:xen:4.5.0:*:*:*:*:*:*:*
4.5.1CPE matchmatch criteria
cpe:2.3:o:xen:xen:4.5.1:*:*:*:*:*:*:*
4.5.2CPE matchmatch criteria
cpe:2.3:o:xen:xen:4.5.2:*:*:*:*:*:*:*
4.5.3CPE matchmatch criteria
cpe:2.3:o:xen:xen:4.5.3:*:*:*:*:*:*:*
4.5.5CPE matchmatch criteria
cpe:2.3:o:xen:xen:4.5.5:*:*:*:*:*:*:*

CVSS Data

CVSS version used by this source: 3.0

5.5MEDIUM

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

Attack Vector
LOCAL
Attack Complexity
LOW
Privileges Required
LOW
User Interaction
NONE
Scope
UNCHANGED
Confidentiality Impact
NONE
Integrity Impact
NONE
Availability Impact
HIGH
Exploitability Score
1.8
Impact Score
3.6
CvssVersion
3.0

Exploit Intelligence

EPSS Score
0.39%
Probability of exploitation in next 30 days
EPSS Percentile
31.5%
Percentile rank of EPSS score among Peer Group
As of 2026-07-24
Model: v2026.06.15
This CVE's current EPSS score of 0.0039 is in the 87th percentile among its peer group of 15,903 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 Advisories (1)

redhatCVE-2016-9377Moderate

xen: x86 software interrupt injection mis-handled (XSA-196)

Nov 22, 2016

References

security.gentoo.org / glsa/201612-56
securityfocus.com / bid/94475
securitytracker.com / id/1037345
xenbits.xen.org / xsa/advisory-196.html
PatchVendor Advisory