CVE Catalog

CVE-2026-82636

HighCVSS 7.9
Published: Updated: Translated: NVD NIST

Exploitation Probability (EPSS)

Elevated risk
0.79%

54th percentile - higher than 54% of all known CVEs

Summary

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.

Risk Assessment

Risk of arbitrary system command execution in dom0, potentially leading to full compromise of the Qubes OS system.

Recommendation

Update Qubes OS to version qubes-core-dom0-linux 4.3.22 or later, which fixes this vulnerability.

Related vulnerabilities

Original NVD description (English source)

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.

Vulnerability data from NVD (NIST) · CISA KEV · EPSS