CVE-2011-1780: n/a vulnerability

CVE-2011-1780: The instruction emulation in Xen 3.0.3 allows local SMP guest users to cause a denial of service (host cras...

The instruction emulation in Xen 3.0.3 allows local SMP guest users to cause a denial of service (host crash) by replacing the instruction that causes the VM to exit in one thread with a different instruction in a different thread.

UnknownCVSS not scoredNot KEV-listedUpdatedAug 6, 2024, 22:37 UTC (UTC+00:00)

Security readout for executives and security teams

This is a Xen hypervisor availability flaw. A user inside a local SMP guest could trigger a host crash, potentially taking down all workloads on that physical host. The source bundle does not provide CVSS, confirmed affected package ranges beyond Xen 3.0.3, or evidence of active exploitation. Exposure is most relevant to legacy Xen environments, especially systems running Xen 3.0.3 or Red Hat packages covered by RHSA-2011:1065 or RHSA-2011:1163. Modern environments are unlikely affected unless obsolete hypervisor stacks remain in service. Treat this as a legacy infrastructure availability risk. Prioritize if any business-critical or multi-tenant workloads still run on old Xen hosts; otherwise handle through normal legacy-system retirement and patch assurance. Mitigation focus: Apply the relevant Red Hat or Xen vendor security updates.; Retire or isolate Xen 3.0.3 hosts still in service.; Separate untrusted guest workloads from potentially affected legacy hosts..

Prepared: Jun 14, 2026, 14:50 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: Jan 7, 2014, 19:00 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
https://bugzilla.redhat.com/show_bug.cgi?id=702657CVE reference · x_refsource_CONFIRM

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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