CVE-2026-82636

HIGH
7.9
CVSS Score
Published: August 30, 2026 at 01:05 PM UTC
Updated: September 8, 2026 at 07:59 PM UTC
1 product affected across 1 vendorQubes OS

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Severity
HIGH7.9
Exploit prediction
EPSS 2%
SSVC
No known exploit

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

Our own answer: ranges merged, affected separated from platform-only, with confidence and review flags.

v < qubes-core-dom0-linux 4.3.22
Affected range stops below qubes-core-dom0-linux 4.3.22, so it looks safe — our inference, not a vendor statement

Remediation

No guide yet

No remediation guidance has been written for this CVE yet, and no fixed version or vendor advisory is recorded against it.

SSVC — Action Prioritization

SSVCNo known exploitNot automatableTotal impact

SSVC signals action urgency (what to patch first), separate from CVSS which measures severity.

CVSS

7.9HIGHmitre
Attack Vector
ADJACENT_NETWORK
Complexity
HIGH
Privileges
NONE
User Interaction
REQUIRED
Scope
CHANGED
Confidentiality
HIGH
Integrity
HIGH
Availability
HIGH
Vector?

Quick Info

StatusDEFERRED
CWE
CWE-78

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