SEPTEMBER 18, 2026
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Case File

CVE-2026-82636

HIGH · CVSS 7.9 EPSS 0.79%

Source: NVD + CISA KEV + EPSS · Published 2026-08-30 · Last synced 2026-09-18

CyberRota Analysis

AI-Generated

Qubes OS versions prior to 4.3.22 are vulnerable to OS command injection during the `qvm-copy-to-vm` operation from dom0 to a compromised qube, due to improper handling of error messages containing shell metacharacters. This vulnerability could allow an attacker to execute arbitrary commands in the context of the dom0 domain, potentially compromising the security of the entire system. Organizations using Qubes OS should prioritize patching this vulnerability to mitigate the risk of exploitation.

CVE
CVE-2026-82636
Severity
HIGH
CVSS
7.9
EPSS
0.79%
Linux

Original NVD 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.