Is CVE-2016-1571 in the CISA KEV catalog?

No. CVE-2016-1571 is not currently on the CISA Known Exploited Vulnerabilities list.

What is the CVSS severity of CVE-2016-1571?

CVE-2016-1571 has a CVSS v3 base score of 6.3 (MEDIUM).

What is the EPSS score for CVE-2016-1571?

CVE-2016-1571 has an EPSS score of 1.28% (66th percentile), estimating the probability of exploitation in the next 30 days.

How do I fix CVE-2016-1571?

Upgrade xen on debian 11 to 4.8.0~rc3-1 or later.

CVE & CISA-KEV Catalog

CVE-2016-1571

MEDIUM

6.3

CVSS v3

NVD

Description

The paging_invlpg function in include/asm-x86/paging.h in Xen 3.3.x through 4.6.x, when using shadow mode paging or nested virtualization is enabled, allows local HVM guest users to cause a denial of service (host crash) via a non-canonical guest address in an INVVPID instruction, which triggers a hypervisor bug check.

CWE-17

How to fix

Remediation Available

xenDebian

Fixed in:4.8.0~rc3-1CVE-2016-1571

Remediation is compiled from vendor and distribution security advisories. Always confirm against the linked source for your exact version and platform.

CVSS v3 Vector

Exploitability

Attack VectorNetwork

Attack ComplexityHigh

Privileges RequiredLow

User InteractionNone

ScopeChanged

Impact

ConfidentialityNone

IntegrityNone

AvailabilityHigh

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

Exploit Intelligence

1.28%probability of exploitation in 30 days

66thpercentile

Moderate risk: more likely to be exploited than 66% of all known CVEs.

References

Vendor Advisory1

xenbits.xen.org

Third-Party Advisory2

Other references1

debian.org

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This product uses NVD data but is not endorsed or certified by the NVD. EPSS scores courtesy of FIRST.org (https://www.first.org/epss). Source: CISA KEV Catalog. Data as of 2026-05-06.