CVE-2026-27211: Cloud Hypervisor: Host File Exfiltration via QCOW Backing File Abuse
Overview
- Severity
- Critical (CVSS 10)
- CVSS Vector
- CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:N
- Exploit Status
- Not Exploited
- Patch Tuesday
- 2026-Feb
- Released
- 2026-02-25
- Last Updated
- 2026-02-26
- EPSS Score
- 0.05% (percentile: 16.5%)
Affected Products (2)
Open Source Software
- 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
Revision History
- 2026-02-25: Information published.
- 2026-02-26: Information published.