CVE-2026-82636: Qubes OS

High severity, CVSS 7.9. EPSS: 1.9% chance of exploitation in the next 30 days.

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.

Affected products

• Qubes OS Qubes OS

Published 2026-08-30. Last modified 2026-09-08.