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CVE-2026-82636

Quick assessment

Affected
Qubes OS Qubes OS
Exploitation
No confirmed in-the-wild exploitation; assess based on exposure
Recommended action
Check the vendor advisory and references for a fixed version. If immediate upgrade is impossible, restrict exposure and increase monitoring.

在 qubes-core-dom0-linux 4.3.22 之前的 Qubes OS 中，当从 dom0 向攻击者控制的 Qube 执行 调用时，由于使用“system”库函数处理可能包含 shell 元字符的错误信息，会导致操作系统命令注入。该漏洞存在于 中。

CVSS 7.9 · High

Possible ATT&CK Techniques 1 AI

T1204 · User Execution
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I. Basic Information for CVE-2026-82636

Vulnerability Information
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Vulnerability Title
N/A
Source: CVE Program / CVE List V5
Vulnerability 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.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:A/AC:H/PR:N/UI:R/S:C/C:H/I:H/A:H
Source: CVE Program / CVE List V5
Vulnerability Type
OS命令中使用的特殊元素转义处理不恰当(OS命令注入)
Source: CVE Program / CVE List V5

Affected Products

Vendor Product Affected Versions CPE Subscribe
Qubes OS Qubes OS 0 ~ qubes-core-dom0-linux 4.3.22 -

II. Public POCs for CVE-2026-82636

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III. Intelligence Information for CVE-2026-82636

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Vendor Advisories for CVE-2026-82636 (1)

Security Blog Posts for CVE-2026-82636 (1)

IV. Related Vulnerabilities

Same weakness: CWE-78

V. Comments for CVE-2026-82636

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