CVE-2026-63125
Critical
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.
SeverityCritical
CVSS9.9
Exploit probability—
ProductLxc Incus
PublishedAug 21, 2026
First seenAug 21, 2026
Weakness typeCWE-59Improper link resolutionCWE-61CWE-61
How to fix
Sources list no fixed version or patch link for this vulnerability.
Affected products
| Product | Affected versions | Fixed in |
|---|---|---|
| lxc incus | < 7.3.0 | — |
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