Is CVE-2016-5242 in the CISA KEV catalog?

No. CVE-2016-5242 is not currently on the CISA Known Exploited Vulnerabilities list.

What is the CVSS severity of CVE-2016-5242?

CVE-2016-5242 has a CVSS v3 base score of 5.6 (MEDIUM).

What is the EPSS score for CVE-2016-5242?

CVE-2016-5242 has an EPSS score of 0.34% (26th percentile), estimating the probability of exploitation in the next 30 days.

How do I fix CVE-2016-5242?

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

CVE & CISA-KEV Catalog

CVE-2016-5242

MEDIUM

5.6

CVSS v3

NVD

Description

The p2m_teardown function in arch/arm/p2m.c in Xen 4.4.x through 4.6.x allows local guest OS users with access to the driver domain to cause a denial of service (NULL pointer dereference and host OS crash) by creating concurrent domains and holding references to them, related to VMID exhaustion.

How to fix

Remediation Available

xenDebian

Fixed in:4.8.0~rc3-1CVE-2016-5242

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 VectorLocal

Attack ComplexityHigh

Privileges RequiredLow

User InteractionNone

ScopeChanged

Impact

ConfidentialityNone

IntegrityNone

AvailabilityHigh

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

Exploit Intelligence

0.34%probability of exploitation in 30 days

26thpercentile

Low risk: more likely to be exploited than 26% of all known CVEs.

References

Vendor Advisory1

xenbits.xen.org

Other references3

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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.