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Vulnerabilities CVE-2026-63125

CVE-2026-63125

Critical
Open
TLP:CLEAR

Incus vulnerable to root RCE via image backup.yaml symlink

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Description

Incus is a system container and virtual machine manager. Prior to version 7.3.0, an unprivileged, project-confined Incus user (a non-admin TLS/RBAC identity with `can_create_images` and `can_create_instances`) can execute arbitrary code as root on the host. A crafted image ships `backup.yaml` as a symlink to a host file. When the root daemon writes the instance's backup file, it follows the symlink. Version 7.3.0 patches the issue.

Details

CVSS Score
9.9
CVSS Vector
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H
Confidence
90%
Published
Aug 21, 2026
Last Modified
Aug 21, 2026
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