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CVE-2017-15596

21
FAUCET Score

CVE-2017-15596 is a denial-of-service vulnerability affecting Xen versions 4.4.x through 4.9.x, where a malicious ARM guest OS user can prevent physical CPU usage due to lock mishandling during an add-to-physmap error. Rated as Medium severity (CVSS 6.0), it requires high privileges on the guest OS and has a high impact on availability, but no impact on confidentiality or integrity. There is no evidence of active exploitation, publicly available exploit code, or significant community discussion surrounding this vulnerability.

Impacted Technologies

VendorProductVersion(s)CPE
4.4.0CPE matchmatch criteria
cpe:2.3:o:xen:xen:4.4.0:*:*:*:*:*:*:*
4.4.0CPE matchmatch criteria
cpe:2.3:o:xen:xen:4.4.0:rc1:*:*:*:*:*:*
4.4.0CPE matchmatch criteria
cpe:2.3:o:xen:xen:4.4.0:rc2:*:*:*:*:*:*
4.4.0CPE matchmatch criteria
cpe:2.3:o:xen:xen:4.4.0:rc3:*:*:*:*:*:*
4.4.0CPE matchmatch criteria
cpe:2.3:o:xen:xen:4.4.0:rc4:*:*:*:*:*:*

CVSS Data

CVSS version used by this source: 3.0

6.0MEDIUM

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

Attack Vector
LOCAL
Attack Complexity
LOW
Privileges Required
HIGH
User Interaction
NONE
Scope
CHANGED
Confidentiality Impact
NONE
Integrity Impact
NONE
Availability Impact
HIGH
Exploitability Score
1.5
Impact Score
4.0
CvssVersion
3.0

Exploit Intelligence

EPSS Score
0.37%
Probability of exploitation in next 30 days
EPSS Percentile
29.6%
Percentile rank of EPSS score among Peer Group
As of 2026-07-26
Model: v2026.06.15
This CVE's current EPSS score of 0.0037 is in the 78th 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 Advisories (1)

redhatCVE-2017-15596Low

xen: add-to-physmap error paths fail to release lock on ARM

Aug 23, 2017

References

xenbits.xen.org / xsa/advisory-235.html
MitigationPatchVendor Advisory
debian.org / security/2017/dsa-3969
securitytracker.com / id/1039568
Third Party AdvisoryVDB Entry