Broken Access Control in Canonical LXD DevLXD API
Published Jun 26, 2026
9.6
CRITICALCVSS 3.1
EPSS 0.29%
Description
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 products
-
- Version 6.6StatusaffectedConstraints<6.9
- Version
No data.
No Red Hat product state for this CVE.
No package ranges for this CVE.
Remediation
Vendor solution
Upgrade to LXD version 6.9 or later.
Metrics
No CVSS v4.0 score for this CVE.
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:N
1 other source (CVE.org) ▾
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:N
No CVSS v3.0 score for this CVE.
No CVSS v2.0 score for this CVE.
This CVE is not in the KEV list.
CISA SSVC (Vulnrichment)
Stakeholder-Specific Vulnerability Categorization from CISA ADP.
Exploitation
PoCAutomatable
NoTechnical Impact
TotalDecision
n/aAssessed Jun 26, 2026 · SSVC 2.0.3
Estimated probability of exploitation in the wild in the next 30 days (FIRST EPSS). As of Oct 1, 2026.
Score over time
Jun–Oct 2026- EPSS v5
Percentile over time
- EPSS v5
Table of values (2 key points)
Flat stretches are collapsed; showing up to 120 newest points.
| Date | Score | Percentile | Model |
|---|---|---|---|
| Oct 1, 2026 | 0.29% (0.00288) | 19.33th | v5 (v2026.06.15) |
| Jun 27, 2026 | 0.11% (0.00108) | 1.45th | v5 (v2026.06.15) |
References (2)
- https://github.com/canonical/lxd/pull/18585 patchIssue Tracking
- https://github.com/canonical/lxd/security/advisories/GHSA-hhf9-qw4v-72xp exploitvdb-entryvendor-advisoryVendor Advisory
| Link | Providers | Tags |
|---|---|---|
| https://github.com/canonical/lxd/pull/18585 | patchIssue Tracking | |
| https://github.com/canonical/lxd/security/advisories/GHSA-hhf9-qw4v-72xp | exploitvdb-entryvendor-advisoryVendor Advisory |
Change history (0)
No recorded changes yet.