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Xen Hypervisor CVE-2026-42494 XSA-497

MEDIUM
N/A vendor:alpine
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Lifecycle Timeline

1
Analysis Generated
Aug 11, 2026 - 09:09 vuln.today

DescriptionCVE.org

Alpine Linux: xen fixed in 4.22.0-r0

AnalysisAI

Xen Hypervisor, as packaged in Alpine Linux, received a security fix in package version 4.22.0-r0 addressing the issue tracked as XSA-497. The underlying vulnerability details, including attack vector, impact class, and affected Xen upstream versions, are not disclosed in the available intelligence - only Alpine's vendor advisory confirms a fix was shipped. …

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Attack ChainAIDerived

Hypothetical attack flow derived from CVE metadata

Access
Obtain guest VM access
Exploit
Trigger XSA-497 vulnerability
Execution
Compromise Xen hypervisor
Impact
Achieve host-level impact

Vulnerability AssessmentAI

Exploitation Exploitation conditions are unknown - the CVE description provides only the Alpine package fix version and no vulnerability detail. … Additional conditions and limiting factors are described in the full assessment.
Risk Assessment No CVSS score or vector is available, and no EPSS data or KEV listing is present in the provided intelligence. … Full risk analysis with EPSS, KEV, and SSVC signal comparison available after sign-in.
Exploit Scenario Without XSA-497 advisory details, a specific exploit scenario cannot be constructed. In a typical high-severity Xen advisory, a malicious or compromised guest VM could trigger a vulnerability in the hypervisor to escalate privileges to the host domain (dom0) or cause a denial of service affecting all co-resident guests. …
Remediation Update the Xen package on Alpine Linux to version 4.22.0-r0 or later using the Alpine package manager: 'apk upgrade xen'. … Detailed patch versions, workarounds, and compensating controls in full report.

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CVE-2026-42494 XSA-497 vulnerability details – vuln.today

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