How severe is CVE-2015-7812?

CVE-2015-7812 has a CVSS 2.0 base score of 4.9, rated medium severity.

Is CVE-2015-7812 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (32nd percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2015-7812?

CVE-2015-7812 primarily affects Xen. In total, 8 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.

How do I fix CVE-2015-7812?

Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.

When was CVE-2015-7812 published?

CVE-2015-7812 was published on 2015-11-17 and last updated on 2026-06-17.

CVE-2015-7812

CVE-2015-7812 is a medium-severity vulnerability in Xen with a CVSS 2.0 base score of 4.9. 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-254.

Key facts

Severity: Medium (CVSS 2.0 base score 4.9)
EPSS exploit prediction: 0% (32nd percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-254
Affected product: Xen
Published: 2015-11-17
Last modified: 2026-06-17

Description

The hypercall_create_continuation function in arch/arm/domain.c in Xen 4.4.x through 4.6.x allows local guest users to cause a denial of service (host crash) via a preemptible hypercall to the multicall interface.

Frequently asked questions

What is CVE-2015-7812?: The hypercall_create_continuation function in arch/arm/domain.c in Xen 4.4.x through 4.6.x allows local guest users to cause a denial of service (host crash) via a preemptible hypercall to the multicall interface.
How severe is CVE-2015-7812?: CVE-2015-7812 has a CVSS 2.0 base score of 4.9, rated medium severity.
Is CVE-2015-7812 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (32nd percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2015-7812?: CVE-2015-7812 primarily affects Xen. In total, 8 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.
How do I fix CVE-2015-7812?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.
When was CVE-2015-7812 published?: CVE-2015-7812 was published on 2015-11-17 and last updated on 2026-06-17.

References

Affected products (8)

cpe:2.3:o:xen:xen:4.4.0:*:*:*:*:*:*:*
cpe:2.3:o:xen:xen:4.4.1:-:*:*:*:*:*:*
cpe:2.3:o:xen:xen:4.4.2:*:*:*:*:*:*:*
cpe:2.3:o:xen:xen:4.4.3:*:*:*:*:*:*:*
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:4.6.0:*:*:*:*:*:*:*

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