Incus is a system container and virtual machine manager. Prior to version 7.2.0, the `record-output` parameter of the `/instances/$name/exec` endpoint stores the output of the command in the `exec-output` directory of the instance. If `exec-output` is a symlink, file named `exec_UUID.stdout` and `exec_UUID.stderr` can be written to an arbitrary location where the `.stdout` file will contain arbitrary content. This behavior can be abused for arbitrary command execution. Version 7.2.0 contains a patch.
History

Wed, 26 Aug 2026 18:30:00 +0000

Type Values Removed Values Added
Metrics ssvc

{'options': {'Automatable': 'no', 'Exploitation': 'none', 'Technical Impact': 'total'}, 'version': '2.0.3'}


Wed, 26 Aug 2026 12:15:00 +0000

Type Values Removed Values Added
Weaknesses CWE-61
References
Metrics threat_severity

None

threat_severity

Critical


Fri, 21 Aug 2026 15:45:00 +0000

Type Values Removed Values Added
First Time appeared Lxc
Lxc incus
Vendors & Products Lxc
Lxc incus

Fri, 21 Aug 2026 14:30:00 +0000

Type Values Removed Values Added
Description Incus is a system container and virtual machine manager. Prior to version 7.2.0, the `record-output` parameter of the `/instances/$name/exec` endpoint stores the output of the command in the `exec-output` directory of the instance. If `exec-output` is a symlink, file named `exec_UUID.stdout` and `exec_UUID.stderr` can be written to an arbitrary location where the `.stdout` file will contain arbitrary content. This behavior can be abused for arbitrary command execution. Version 7.2.0 contains a patch.
Title Incus has an arbitrary file write on host via `exec-output` symlink in crafted image
Weaknesses CWE-73
References
Metrics cvssV3_1

{'score': 9.9, 'vector': 'CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H'}


cve-icon MITRE

Status: PUBLISHED

Assigner: GitHub_M

Published: 2026-08-21T14:19:45.109Z

Updated: 2026-08-26T17:24:53.540Z

Reserved: 2026-05-22T19:10:35.748Z

Link: CVE-2026-48750

cve-icon Vulnrichment

Updated: 2026-08-26T17:24:37.161Z

cve-icon NVD

Status : Received

Published: 2026-08-21T15:16:40.390

Modified: 2026-08-26T18:16:34.300

Link: CVE-2026-48750

cve-icon Redhat

Severity : Critical

Publid Date: 2026-08-21T14:19:45Z

Links: CVE-2026-48750 - Bugzilla