CVE-2026-82636
High
Description
Qubes OS before qubes-core-dom0-linux 4.3.22 allows OS command injection during a qvm-copy-to-vm call from dom0 to an attacker-controlled qube, because the "system" library function is used to process an error message that may have shell metacharacters. This occurs in core-admin-linux/file-copy-vm/qfile-dom0-agent.c.
SeverityHigh
CVSS7.9
Exploit probability—
ProductQubes OS
PublishedAug 30, 2026
First seenAug 30, 2026
Weakness typeCWE-78OS command injection
How to fix
Update
- Qubes OS Qubes OSqubes-core-dom0-linux 4.3.22 or later
Affected products
| Product | Affected versions | Fixed in |
|---|---|---|
| Qubes OS Qubes OS | v < qubes-core-dom0-linux 4.3.22 | qubes-core-dom0-linux 4.3.22 |
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