What’s Vulnerable › Vulnerabilities
CVE-2026-82636
- Severity: high (CVSS 7.9 v3.1)
- Exploited in the wild: not listed in CISA KEV
- EPSS: 1.9% probability of exploitation in the next 30 days
- Public exploit or detection template: none known
- Published: 2026-08-30 · updated 2026-09-08
- Weakness: CWE-78
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.
Affected products
- Qubes OS: before qubes-core-dom0-linux 4.3.22 — fixed in qubes-core-dom0-linux 4.3.22
How to fix
Upgrade to a fixed version: Qubes OS qubes-core-dom0-linux 4.3.22. Check the vendor advisory for mitigations.
References
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