CVE-2015-4103: n/a vulnerability

CVE-2015-4103: Xen 3.3.x through 4.5.x does not properly restrict write access to the host MSI message data field, which a...

Xen 3.3.x through 4.5.x does not properly restrict write access to the host MSI message data field, which allows local x86 HVM guest administrators to cause a denial of service (host interrupt handling confusion) via vectors related to qemu and accessing spanning multiple fields.

UnknownCVSS not scoredNot KEV-listedUpdatedAug 6, 2024, 06:04 UTC (UTC+00:00)

Security readout for executives and security teams

This Xen flaw lets an administrator inside an affected x86 HVM guest VM disrupt the host hypervisor. The business impact is service outage risk for virtualization platforms, especially where customers or separate teams control guest administrators. The source bundle does not provide a CVSS score. Exposure is most likely on older Xen-based virtualization hosts running x86 HVM guests, especially multi-tenant or delegated-administration environments. The bundle also lists Ubuntu, Debian, SUSE, Fedora, Gentoo, Citrix, and upstream Xen advisories, implying packaged Xen deployments should be checked. Treat this as a patching priority for legacy Xen infrastructure, especially any tenant-facing or shared platform. It is less urgent than internet-facing remote code execution, but host-level denial of service can still create material outage risk. Mitigation focus: Identify Xen hosts and compare versions against Xen 3.3.x through 4.5.x exposure.; Apply Xen or distribution vendor updates referenced by upstream and OS advisories.; Prioritize shared virtualization hosts where guest administrators are not fully trusted..

Prepared: Jun 13, 2026, 22:39 UTC (UTC+00:00)

Generated from the cited source records. This long-tail analysis has not been individually reviewed by a named human.

Potential ATT&CK relevance

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Vulnerability profileCVE Program record

Severity: Unknown
CVSS: Not scored
Known Exploited: No
Published: Jun 3, 2015, 20:00 UTC (UTC+00:00)

Official CVE source material

CNA and ADP enrichment extracted from CVE v5

These fields come from the CVE record and ADP containers, not from Glexia's Take. They preserve time-varying source decisions such as CISA SSVC, KEV status, CVSS metrics, and provider references.

0CVSS vectors

0Timeline events

0ADP providers

3Source links

CVSS and timeline data

No CVSS vectors or timeline events were available in the normalized CVE source material.

Source materials

CVE List V5 sourceCVE List V5
https://support.citrix.com/article/CTX206006CVE reference · x_refsource_CONFIRM
GLSA-201604-03CVE reference · vendor-advisory, x_refsource_GENTOO

Affected products

Products and packages named in the record

VendorProductVersion / packageStatus

n/an/an/aListed

Weakness

CWE details

No CWE listed

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