Disclosure summary
Cloud Hypervisor: Host File Exfiltration via QCOW Backing File Abuse
Source-reported weakness categories
CWE-73
Source-specific records & product guidance
Sources retain their own attribution and scoring. Follow the original record to confirm affected versions, fixed releases, and configuration conditions.
Microsoft Security Updates (CVRF) · 2026-Feb
Open original source · Updated Feb 26, 2026
Cloud Hypervisor: Host File Exfiltration via QCOW Backing File Abuse
Maximum of vendor-reported product scores; products and fixed builds are associations, not a universal affected-version statement.
Microsoft maximum product score: 10
| Vendor | Product / association | Version / bounds |
|---|---|---|
| Microsoft update guide | azl3 cloud-hypervisor 48.0.246-1 on Azure Linux 3.0 | (MSRC status code 3) |
| Microsoft update guide | cbl2 cloud-hypervisor-cvm 38.0.72.2-5 on CBL Mariner 2.0 | (MSRC status code 3) |
Vendor remediation references
- CBL-Mariner Releases · build 48.0.246-2 · product IDs 20926-17084
- Vendor guidance · product IDs 20926-17084
Original records & references
- NIST NVD record
- CVE Program record
- msrc.microsoft.com — Vendor advisory
PUBLISHED 2026-02-24T20:03:39-05:00
MODIFIED 2026-02-26T09:36:00-05:00
INGESTED 2026-10-08T12:45:17-04:00