CRITICAL 10.0 Microsoft
CVE-2026-27211
Cloud Hypervisor: Host File Exfiltration via QCOW Backing File Abuse
Microsoft Security Update 2026-Feb: Cloud Hypervisor: Host File Exfiltration via QCOW Backing File Abuse
Affected Products
- azl3 cloud-hypervisor 48.0.246-1 on Azure Linux 3.0
- cbl2 cloud-hypervisor-cvm 38.0.72.2-5 on CBL Mariner 2.0
References
- https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-27211
- https://nvd.nist.gov/vuln/detail/CVE-2026-27211
This critical severity vulnerability with a CVSS score of 10.0 was published on 2026-02-10 via Microsoft. Affected: azl3 cloud-hypervisor 48.0.246-1 on Azure Linux 3.0, cbl2 cloud-hypervisor-cvm 38.0.72.2-5 on CBL Mariner 2.0.
Risk Timeline
CVE Disclosed2026-02-10 · 235 days ago
Remediation Resources
Official Advisory
msrc.microsoft.com/update-guide/vulnerability/CVE-2026-27211NVD / MITRE
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