How severe is CVE-2017-10916?

CVE-2017-10916 has a CVSS 3.x base score of 7.5, rated high severity. It is exploitable over network with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is high, integrity none, and availability none.

Is CVE-2017-10916 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (68th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2017-10916?

CVE-2017-10916 primarily affects Xen. In total, 13 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.

How do I fix CVE-2017-10916?

Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its high severity, prioritise patching exposed systems.

When was CVE-2017-10916 published?

CVE-2017-10916 was published on 2017-07-05 and last updated on 2026-06-17.

CVE-2017-10916

CVE-2017-10916 is a high-severity vulnerability in Xen with a CVSS 3.x base score of 7.5. It is not currently listed as actively exploited by CISA, and its EPSS exploit-prediction score is low. The underlying weakness is classified as CWE-200.

Key facts

Severity: High (CVSS 3.x base score 7.5)
CVSS v2: 5.0
EPSS exploit prediction: 1% (68th percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-200
Affected product: Xen
Published: 2017-07-05
Last modified: 2026-06-17

Description

The vCPU context-switch implementation in Xen through 4.8.x improperly interacts with the Memory Protection Extensions (MPX) and Protection Key (PKU) features, which makes it easier for guest OS users to defeat ASLR and other protection mechanisms, aka XSA-220.

Frequently asked questions

What is CVE-2017-10916?: The vCPU context-switch implementation in Xen through 4.8.x improperly interacts with the Memory Protection Extensions (MPX) and Protection Key (PKU) features, which makes it easier for guest OS users to defeat ASLR and other protection mechanisms, aka XSA-220.
How severe is CVE-2017-10916?: CVE-2017-10916 has a CVSS 3.x base score of 7.5, rated high severity. It is exploitable over network with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is high, integrity none, and availability none.
Is CVE-2017-10916 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (68th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2017-10916?: CVE-2017-10916 primarily affects Xen. In total, 13 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.
How do I fix CVE-2017-10916?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its high severity, prioritise patching exposed systems.
When was CVE-2017-10916 published?: CVE-2017-10916 was published on 2017-07-05 and last updated on 2026-06-17.

References

Affected products (13)

cpe:2.3:o:xen:xen:4.5.0:*:*:*:*:*:*:*
cpe:2.3:o:xen:xen:4.5.1:*:*:*:*:*:*:*
cpe:2.3:o:xen:xen:4.5.2:*:*:*:*:*:*:*
cpe:2.3:o:xen:xen:4.5.3:*:*:*:*:*:*:*
cpe:2.3:o:xen:xen:4.5.5:*:*:*:*:*:*:*
cpe:2.3:o:xen:xen:4.6.0:*:*:*:*:*:*:*
cpe:2.3:o:xen:xen:4.6.1:*:*:*:*:*:*:*
cpe:2.3:o:xen:xen:4.6.2:*:*:*:*:*:*:*
cpe:2.3:o:xen:xen:4.6.4:*:*:*:*:*:*:*
cpe:2.3:o:xen:xen:4.6.5:*:*:*:*:*:*:*
cpe:2.3:o:xen:xen:4.7.1:*:*:*:*:*:*:*
cpe:2.3:o:xen:xen:4.8.0:*:*:*:*:*:*:*
cpe:2.3:o:xen:xen:4.8.1:*:*:*:*:*:*:*

More vulnerabilities in Xen

CVE-2017-10921 — Critical (CVSS 10.0): The grant-table feature in Xen through 4.8.x does not ensure sufficient type counts for a GNTMAP_device_map and…
CVE-2017-10920 — Critical (CVSS 10.0): The grant-table feature in Xen through 4.8.x mishandles a GNTMAP_device_map and GNTMAP_host_map mapping, when followed…
CVE-2017-10918 — Critical (CVSS 10.0): Xen through 4.8.x does not validate memory allocations during certain P2M operations, which allows guest OS users to…
CVE-2017-10912 — Critical (CVSS 10.0): Xen through 4.8.x mishandles page transfer, which allows guest OS users to obtain privileged host OS access, aka…
CVE-2015-8104 — Critical (CVSS 10.0): The KVM subsystem in the Linux kernel through 4.2.6, and Xen 4.3.x through 4.6.x, allows guest OS users to cause a…
CVE-2018-12892 — Critical (CVSS 9.9): An issue was discovered in Xen 4.7 through 4.10.x. libxl fails to pass the readonly flag to qemu when setting up a SCSI…

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