What is CVE-2026-48749?

CVE-2026-48749 is a critical-severity vulnerability in Lxc Incus, classified under External Control of File Name or Path. CVSS score: 9.9/10. Published 2026-08-21.

How severe is CVE-2026-48749?

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

Vulnerability in Lxc Incus

CVE-2026-48749

Incus is a system container and virtual machine manager. Prior to version 7.2.0, a specially crafted image can be used to read or create/write arbitrary files on the host; possibly leading to arbitrary command execution. Version 7.2.0 fixes the issue.

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-73 — External Control of File Name or Path

References

security-advisories@github.com (x_refsource_CONFIRM)

Frequently asked questions

What is CVE-2026-48749?: CVE-2026-48749 is a critical-severity vulnerability in Lxc Incus, classified under External Control of File Name or Path. CVSS score: 9.9/10. Published 2026-08-21.
How severe is CVE-2026-48749?: Critical severity. CVSS v3 base score is 9.9 out of 10.