CVE-2014-9066: n/a vulnerability

CVE-2014-9066: Xen 4.4.x and earlier, when using a large number of VCPUs, does not properly handle read and write locks, w...

Xen 4.4.x and earlier, when using a large number of VCPUs, does not properly handle read and write locks, which allows local x86 guest users to cause a denial of service (write denial or NMI watchdog timeout and host crash) via a large number of read requests, a different vulnerability than CVE-2014-9065.

UnknownCVSS not scoredNot KEV-listedUpdatedAug 6, 2024, 13:33 UTC (UTC+00:00)

Security readout for executives and security teams

CVE-2014-9066 is a Xen hypervisor denial-of-service flaw. A local x86 guest user could trigger lock-handling problems when many VCPUs are involved, potentially causing write denial, NMI watchdog timeout, or a host crash. Business impact is service disruption across workloads on affected Xen hosts. Exposure is likely limited to organizations running Xen 4.4.x or earlier on x86, especially hosts with guests configured with many VCPUs. Environments without Xen, without x86 guests, or already updated through Xen, Gentoo, or openSUSE guidance are less likely exposed. Prioritize if Xen underpins production, shared hosting, or customer workloads. The main risk is outage, not confirmed compromise. If Xen is absent or already updated, priority drops substantially. Mitigation focus: Review Xen XSA-114 and applicable distribution advisories for official fixes.; Upgrade Xen packages through supported vendor channels where affected.; Prioritize shared or multi-tenant Xen hosts with high-VCPU guests..

Prepared: Jun 14, 2026, 05:41 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

Conservative CVE-to-ATT&CK context

These mappings and lookup hints may be relevant to the vulnerability behavior, CWE, affected product, or exposure path. Glexia-inferred context is not an official MITRE, ATT&CK, CWE, or CVE Program mapping.

ATT&CK lookup starting points

Use these exact CWE pages and searches to review the Glexia ATT&CK library from this CVE's weakness and description context.

cve · low confidence lookup

CVE-2014-9066 mapping review

Open the CVE-to-ATT&CK bridge for reviewed, inferred, or future official mappings tied to this CVE.

Open ATT&CK lookup

Vulnerability profileCVE Program record

Severity: Unknown
CVSS: Not scored
Known Exploited: No
Published: Dec 9, 2014, 22:52 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

2Source 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
GLSA-201504-04CVE 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

CWE links open Glexia weakness intelligence pages with official CWE context, developer remediation guidance, and related CVE mappings.