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CVE-2016-1570

27
FAUCET Score

CVE-2016-1570 describes a vulnerability in the PV superpage functionality of Xen versions 3.4.0, 3.4.1, and 4.1.x through 4.6.x. This flaw allows local PV guests to manipulate page identifiers via specific hypercalls, leading to a high-severity impact. Attackers could achieve information disclosure, denial of service, or privilege escalation with high confidentiality, integrity, and availability impacts, despite requiring low privileges and high attack complexity. There is currently no known active exploitation, public exploit code, or significant community discussion surrounding this vulnerability.

Impacted Technologies

VendorProductVersion(s)CPE
3.4.0CPE matchmatch criteria
cpe:2.3:o:xen:xen:3.4.0:*:*:*:*:*:*:*
3.4.1CPE matchmatch criteria
cpe:2.3:o:xen:xen:3.4.1:*:*:*:*:*:*:*
4.1.0CPE matchmatch criteria
cpe:2.3:o:xen:xen:4.1.0:*:*:*:*:*:*:*
4.1.1CPE matchmatch criteria
cpe:2.3:o:xen:xen:4.1.1:*:*:*:*:*:*:*
4.1.2CPE matchmatch criteria
cpe:2.3:o:xen:xen:4.1.2:*:*:*:*:*:*:*

CVSS Data

CVSS version used by this source: 3.0

8.5HIGH

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

Attack Vector
NETWORK
Attack Complexity
HIGH
Privileges Required
LOW
User Interaction
NONE
Scope
CHANGED
Confidentiality Impact
HIGH
Integrity Impact
HIGH
Availability Impact
HIGH
Exploitability Score
1.8
Impact Score
6.0
CvssVersion
3.0

Exploit Intelligence

EPSS Score
1.15%
Probability of exploitation in next 30 days
EPSS Percentile
63.7%
Percentile rank of EPSS score among Peer Group
As of 2026-07-27
Model: v2026.06.15
This CVE's current EPSS score of 0.0115 is in the 61st percentile among its peer group of 1,162 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 0.1 InfoSec Media, 0.0 Vendor Blog, and 0.0 Security Researcher mentions.

Remediation

Vendor Advisories (1)

redhatCVE-2016-1570Important

xen: PV superpage functionality missing sanity checks

Jan 20, 2016

References

debian.org / security/2016/dsa-3519
securitytracker.com / id/1034744
xenbits.xen.org / xsa/advisory-167.html
Vendor Advisory