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THREAT OPS › Threat News › [NVD] CVE-2026-82636 (HIGH 7.9) — 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-

[NVD] CVE-2026-82636 (HIGH 7.9) — 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-

mednvdPublished 2026-08-30

CVE-2026-82636 CVSS: 7.9 HIGH Published: 2026-08-30T14:17:03.310

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.

Indicators of compromise

Original source: https://nvd.nist.gov/vuln/detail/CVE-2026-82636