CVE-2026-63125
published 2026-08-21CVE-2026-63125: 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…
PriorityP267critical9.9CVSS 3.1
AVNACLPRLUINSCCHIHAH
EPSS
0.42%
35.0th percentile
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.
Affected
1 ranges
| Vendor | Product | Version range | Fixed in |
|---|---|---|---|
| lxc | incus | < 7.3.0 | 7.3.0 |
CVSS provenance
nvdv3.19.9CRITICALCVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H
vendor_redhat9.9CRITICAL
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Bugzilla
CVE-2026-63125 incus: Incus vulnerable to root RCE via image backup.yaml symlink [fedora-all]
bugzilla·2026-08-26·CVSS 9.9
CVE-2026-63125 [CRITICAL] CVE-2026-63125 incus: Incus vulnerable to root RCE via image backup.yaml symlink [fedora-all]
CVE-2026-63125 incus: Incus vulnerable to root RCE via image backup.yaml symlink [fedora-all]
Disclaimer: Community trackers are created by Red Hat Product Security team on a best effort basis. Package maintainers are required to ascertain if the flaw indeed affects their package, before starting the update process.
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.
Bugzilla
CVE-2026-63125 incus: Incus vulnerable to root RCE via image backup.yaml symlink
bugzilla·2026-08-21·CVSS 9.9
CVE-2026-63125 [CRITICAL] CVE-2026-63125 incus: Incus vulnerable to root RCE via image backup.yaml symlink
CVE-2026-63125 incus: Incus vulnerable to root RCE via image backup.yaml symlink
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.
2026-08-21
Published