by Kastro
Paper/Archive/CVE-2026-12411

CVE-2026-12411

Canonical lxd — Broken Access Control in Canonical LXD DevLXD API

EPSS 0.3%public exploitCVSS 9.6
critical.is priorityof 100
43
CVSS 9.6 (NVD)9.6 / 10 × 3028.8Not in CISA KEV+300.0EPSS percentile 21.4.214 × 204.3Exploit: SSVC poc+1010.0SSVC exploitation: poc+100.0
Description · from the CVE record

Broken Access Control in the devLXDInstancePatchHandler component of Canonical LXD allows an untrusted guest to mount, read, and overwrite another guest's custom storage volume via a crafted device PATCH request over /dev/lxd when security.devlxd.management.volumes is enabled.

Affected

ProductAffectedFixed inSource
lxd6.6 – < 6.96.9CNA

Scores by source

NVD9.6CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:N
canonical (CNA)8.4CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:N
CISA ADPSSVCExploitation: poc · Automatable: no · Technical impact: total

References

exploitgithub.com/canonical/lxd/security/advisories/GHSA-hhf9-qw4v-72xppatchgithub.com/canonical/lxd/pull/18585