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Xen Hypervisor CVE-2026-42488 XSA-494

MEDIUM
N/A vendor:alpine
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Lifecycle Timeline

1
Analysis Generated
Jun 09, 2026 - 16:01 vuln.today

DescriptionCVE.org

Alpine Linux: xen fixed in 4.21.1-r6

AnalysisAI

Xen hypervisor (XSA-494) has been patched in Alpine Linux via the xen package update to version 4.21.1-r6. The underlying vulnerability class, technical root cause, and precise impact are not disclosed in the available intelligence - only the Alpine Linux vendor fix notice and advisory identifier XSA-494 are confirmed. …

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Attack ChainAIDerived

Hypothetical attack flow derived from CVE metadata

Access
Obtain access to Xen-hosted environment
Exploit
Trigger XSA-494 vulnerability condition
Impact
Achieve impact (type unconfirmed)

Vulnerability AssessmentAI

Exploitation Exploitation conditions cannot be determined from the available data. … Additional conditions and limiting factors are described in the full assessment.
Risk Assessment Risk assessment is severely constrained by data sparsity. … Full risk analysis with EPSS, KEV, and SSVC signal comparison available after sign-in.
Exploit Scenario Without the XSA-494 advisory content, a specific exploit scenario cannot be constructed from confirmed data. In a representative Xen hypervisor attack, a malicious or compromised guest VM could potentially trigger the vulnerability to escalate privileges, cause hypervisor denial-of-service, or escape guest isolation - but none of these apply specifically to XSA-494 based on available intelligence. …
Remediation The confirmed fix is to upgrade the Alpine Linux xen package to version 4.21.1-r6 or later using 'apk upgrade xen'. … Detailed patch versions, workarounds, and compensating controls in full report.

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CVE-2026-42488 XSA-494 vulnerability details – vuln.today

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