CVE-2026-12411 — Security Box Score

CVE · referencelatest edition

Reference page — cumulative record through Wednesday, August 19, 2026 UTC. Reference pages update as the archive grows; only dated daily editions are immutable pages of record.

CVE-2026-12411CRITICAL

Canonical lxd — Broken Access Control in Canonical LXD DevLXD API

  AV  AC  PR  UI  S  C  I  A   CVSS    EPSS   %ile   KEV
   N   L   L   N  C  H  H  N    9.6   .0024   14.8     —

AFFECTED
  Product  Versions  Fixed
  lxd      6.6 –     —

TIMELINE
  Jun 16  Reserved by canonical
  Jun 26  EXPLOIT PUBLISHED — CVE-2026-12411 (Canonical lxd). Public exploit reference added.
  Jun 26  Published (CNA: canonical)

CWE-639, CWE-862 · CNA: canonical · CVSS v3.1 · 2 references · NVD status: Analyzed

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.

Lifecycle

Complete event history — 3 events, chronological
Date	Event	Detail
June 16, 2026	Reserved	Reserved by canonical
June 26, 2026	EXPLOIT PUBLISHED	EXPLOIT PUBLISHED — CVE-2026-12411 (Canonical lxd). Public exploit reference added.
June 26, 2026	Published	Published (CNA: canonical)

Affected

Affected products and packages — 1 row
Vendor	Product / Package	Ecosystem	Version introduced	Fixed
Canonical	lxd	—	6.6	—

Weaknesses

CWE-639 · CWE-862

References (2)

https://github.com/canonical/lxd/pull/18585 [Issue Tracking, Patch]
https://github.com/canonical/lxd/security/advisories/GHSA-hhf9-qw4v-72xp [Exploit, Vendor Advisory]

Authoritative record: CVE-2026-12411 at cve.org

Vendors: canonical

Weaknesses: CWE-639 · CWE-862

About this page

This is a reference page, not a dated page of record. It assembles the complete lifecycle of CVE-2026-12411 from the CVE Program record, NVD enrichment, the CISA KEV catalog, EPSS, and OSV advisories. The box score's numbers (CVSS, EPSS, KEV status) are current as of Wednesday, August 19, 2026 UTC and are re-derived as the archive grows; only dated daily editions are immutable pages of record. The authoritative source for this identifier is cve.org.