cve 2026 21248

  1. Urgent Patch Guidance for CVE-2026-21248 Hyper-V RCE

    Microsoft's security guidance for CVE-2026-21248 warns Windows administrators that a serious Remote Code Execution (RCE) vulnerability exists in Hyper‑V components used to bridge guest and host operations, and that immediate, prioritized remediation is required even though vendor advisories...
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    • cve 2026 21248 guest host isolation hyper v security virtualization patching
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    • Forum: Security Alerts