What is CVE-2026-48751?

CVE-2026-48751 is a critical-severity vulnerability in Lxc Incus, classified under Missing Authorization. CVSS score: 9.9/10. Published 2026-08-21.

How severe is CVE-2026-48751?

Critical severity. CVSS v3 base score is 9.9 out of 10.

Auth bypass in Lxc Incus

CVE-2026-48751

Incus is a system container and virtual machine manager. Prior to version 7.2.0, instance snapshots ignore the `restricted.containers.lowlevel=block` setting; allowing for arbitrary command execution on the Incus server by abusing lowlevel hooks such as `raw.lxc` and `raw.qemu`. Version 7.2.0 patches the issue.

Vulnerability class: Broken Access Control

CVSS v3 metric

CVSS v3 base score 9.9 (Critical). Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H.

Affected products

Lxc Incus — versions < 7.2.0

Weakness classification (CWE)

CWE-862 — Missing Authorization

References

security-advisories@github.com (x_refsource_CONFIRM)

Frequently asked questions

What is CVE-2026-48751?: CVE-2026-48751 is a critical-severity vulnerability in Lxc Incus, classified under Missing Authorization. CVSS score: 9.9/10. Published 2026-08-21.
How severe is CVE-2026-48751?: Critical severity. CVSS v3 base score is 9.9 out of 10.