CVE-2014-8867: n/a vulnerability

CVE-2014-8867: The acceleration support for the "REP MOVS" instruction in Xen 4.4.x, 3.2.x, and earlier lacks properly bou...

The acceleration support for the "REP MOVS" instruction in Xen 4.4.x, 3.2.x, and earlier lacks properly bounds checking for memory mapped I/O (MMIO) emulated in the hypervisor, which allows local HVM guests to cause a denial of service (host crash) via unspecified vectors.

UnknownCVSS not scoredNot KEV-listedUpdatedAug 6, 2024, 13:26 UTC (UTC+00:00)

Security readout for executives and security teams

A flaw in Xen's handling of an optimized memory-copy instruction can let a virtual machine crash the underlying host. The impact is availability: one local HVM guest could take down services sharing that Xen host. Exposure is most likely on older Xen hypervisors running HVM guests, including downstream Xen packages or vendor appliances referenced by distribution and vendor advisories. Purely remote attackers are not described in the provided sources. Prioritize remediation for any Xen platform hosting untrusted or customer-controlled HVM guests. For isolated, trusted workloads, treat as a controlled availability risk but still patch because host crashes can affect multiple services. Mitigation focus: Identify Xen hosts running 4.4.x, 3.2.x, or earlier branches.; Apply Xen Project or operating-system vendor security updates for XSA-112/CVE-2014-8867.; Check Citrix, Juniper, Red Hat, Debian, Gentoo, and SUSE guidance where applicable..

Prepared: Jun 14, 2026, 06:22 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: Dec 1, 2014, 15:00 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

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

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