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    CVE-2026-12411

    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.

    Published:Jun 26, 2026
    Last Modified:Jun 27, 2026
    EPS:Jun 26, 2026
    EPSS Score:
    CVSS Score:8.4

    Affected Products

    Vendor
    Canonical
    Product
    Lxd

    Exploits

    https://github.com/canonical/lxd/security/advisories/GHSA-hhf9-qw4v-72xphttps://github.com/canonical/lxd/security/advisories/GHSA-hhf9-qw4v-72xp

    Common Attack Pattern Enumeration and Classification (CAPEC)

    CAPEC-665 Exploitation of Thunderbolt Protection Flaws

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    Common Vulnerability Scoring System

    Attack Vector
    Network
    Adjacent
    Local
    Physical
    Privileges Required
    None
    Low
    High
    User Interaction
    None
    Required
    Scope
    Unchanged
    Changed
    Confidentiality
    None
    Low
    High
    Integrity
    None
    Low
    High
    Availability
    None
    Low
    High