CVE-2026-12411Public exploit

Cross-guest volume hijack via unchecked device attachment

Published Jun 26, 2026 · Updated Jun 26, 2026

Broken access control in Canonical LXD 6.6 through 6.8 allows guest OS users to read and overwrite another guest's custom volume. devLXDInstancePatchHandler validates a new disk device's shape but neither loads the named volume nor verifies its owner before attaching it. Exploitation requires a normal DevLXD identity in a shared project with security.devlxd.management.volumes enabled; no victim interaction is required.

CVSS severity8.4
High
EPSS probability0.29%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Broken access control in Canonical LXD 6.6 through 6.8 allows guest OS users to read and overwrite another guest's custom volume. devLXDInstancePatchHandler validates a new disk device's shape but neither loads the named volume nor verifies its owner before attaching it. Exploitation requires a normal DevLXD identity in a shared project with security.devlxd.management.volumes enabled; no victim interaction is required.

The record

CVE
CVE-2026-12411
Published
Jun 26, 2026
Updated
Jun 26, 2026
Vendor
Canonical
Product
LXD
Classifications
CWE-862, CWE-639, CAPEC-77, T1005, T1565.001
Attack vector
local
Privileges
authenticated

Timeline

How it unfolded

  1. Jun 26, 2026CVE publishedPublication date reported by the CVE source.
  2. Jun 26, 2026Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

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Is a vulnerable build present?

Compare these published version ranges with your installed build and any vendor patches.

  1. Affected versionversion=6.6 <6.9

What conditions does exploitation require?

Attack vectorlocal
Required privilegesauthenticated

What is affected?

Canonical · LXDversion=6.6 <6.9

Published CVSS scores

9.6NIST NVDCVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:N
8.4CanonicalCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:N

CVSS describes severity. EPSS estimates exploitation probability.

Attacks

What attackers are doing with it

Daily unique IPs observed by Shadowserver honeypots for known exploited vulnerabilities (KEVs). Missing observations do not establish an absence of attacks.

Daily unique IPsNo honeypot observations are available for this CVE in the selected window.

No observations available

Sep 9, 2026Sep 15, 2026
Latest reporting daySep 15, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectorlocal
Privilegesauthenticated
Known exploitationUnconfirmed
Public exploitPublished

Weakness, pattern, technique

CWE-862Missing Authorization
CWE-639Authorization Bypass Through User-Controlled Key
CAPEC-77Manipulating User-Controlled Variables
T1005Data from Local System
T1565.001Stored Data Manipulation

Public exploit references

Labels summarize the accepted research assessment. They do not indicate a test against your environment.

Technologies

Your stack

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Your stack

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