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Xen Hypervisor CVE-2026-42490 XSA-492

MEDIUM
N/A vendor:alpine
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Lifecycle Timeline

1
Analysis Generated
Jun 09, 2026 - 16:00 vuln.today

DescriptionCVE.org

Alpine Linux: xen fixed in 4.21.1-r6

AnalysisAI

Xen hypervisor as packaged in Alpine Linux received a security fix tracked under Xen Security Advisory XSA-492 (CVE-2026-42490). The Alpine Linux vendor has confirmed the issue is resolved in package version 4.21.1-r6. …

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Attack ChainAIDerived

Hypothetical attack flow derived from CVE metadata

Access
Unknown - obtain full XSA-492 advisory
Exploit
Identify affected Xen component
Execution
Assess exploit prerequisites
Impact
Apply patch 4.21.1-r6

Vulnerability AssessmentAI

Exploitation Exploitation conditions cannot be determined from available data. … Additional conditions and limiting factors are described in the full assessment.
Risk Assessment Risk cannot be quantitatively assessed from the available data. … Full risk analysis with EPSS, KEV, and SSVC signal comparison available after sign-in.
Exploit Scenario An exploit scenario cannot be constructed from available data. The attack vector, required privileges, affected Xen component, and resulting impact class are all unknown. …
Remediation Upgrade the xen package on Alpine Linux to version 4.21.1-r6 or later using the standard Alpine package manager command 'apk upgrade xen'. … Detailed patch versions, workarounds, and compensating controls in full report.

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CVE-2026-42490 XSA-492 vulnerability details – vuln.today

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