CVE-2026-82636

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.

  • Published Aug 30, 2026
  • CVSS 7.9 high
  • 1.9% chance of exploitation in the next 30 days (EPSS)

Affected software

CVE-2026-82636 at the National Vulnerability Database