CVE-2013-1920: n/a vulnerability

CVE-2013-1920: Xen 4.2.x, 4.1.x, and earlier, when the hypervisor is running "under memory pressure" and the Xen Security...

Xen 4.2.x, 4.1.x, and earlier, when the hypervisor is running "under memory pressure" and the Xen Security Module (XSM) is enabled, uses the wrong ordering of operations when extending the per-domain event channel tracking table, which causes a use-after-free and allows local guest kernels to inject arbitrary events and gain privileges via unspecified vectors.

UnknownCVSS not scoredNot KEV-listedUpdatedAug 6, 2024, 15:20 UTC (UTC+00:00)

Security readout for executives and security teams

This is a Xen hypervisor flaw that could let a malicious guest kernel gain privileges on the virtualization host. The issue requires Xen Security Module being enabled and memory pressure on affected Xen versions. Business risk is highest for environments hosting untrusted or tenant-controlled virtual machines. Exposure is limited to Xen 4.2.x, 4.1.x, and earlier with XSM enabled, especially multi-tenant or untrusted guest environments. Systems not using Xen, not enabling XSM, or not allowing guest kernel control are less likely exposed. Treat as high priority for legacy Xen or multi-tenant virtualization estates. The flaw affects the trust boundary between guest and host, but the conditions are specific and no active exploitation evidence is provided. Mitigation focus: Identify all Xen hypervisors and confirm version and XSM status.; Check Xen and OS vendor advisories for XSA-47/CVE-2013-1920 fixed packages.; Patch or upgrade affected Xen hosts through supported vendor channels..

Prepared: Jun 24, 2026, 11:46 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: Apr 12, 2013, 22:00 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
xen-cve20131920-code-exec(83226)CVE reference · vdb-entry, x_refsource_XF

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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