CVE-2026-12411

CRITICALNVD 9.69.6—
EchelonGraph scoreMEDIUM confidence

This critical-severity CVE scores 9.6 under NVD CVSS v3. EPSS exploit probability: 0.3% (19th percentile of EPSS-scored CVEs). GitHub Security Advisory data not yet ingested — confidence will rise once GHSA publishes (typical lag: hours to days for open-source ecosystem CVEs; never for infrastructure-only CVEs).

Triggered by: NVD CVSS baseline
Sources: epss, nvd
9.6EG
EchelonGraph verdictPlan a fixRemediate within your standard update timelines (the SSVC decision on this page).
  • High severity, but no confirmed exploitation yet
CISA-KEV: Not listedEPSS PROB: 0.3%CVSS: 9.6Exploit: None knownExposed services: Not assessed

Upgrade to LXD version 6.9 or later (from the CVE record's solution, Canonical Ltd.) — apply it.

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.

CVSS v3
9.6
EG Score
9.6CRITICALmedium confidence
EG Risk
43
EG Risk 43/100

EG Risk is EchelonGraph's 0–100 priority score: it fuses intrinsic severity with real-world exploitation and automatability so you can rank equal-severity CVEs and fix the most dangerous first. Higher = act sooner. Distinct from the 0–10 EG Score (severity).

How it’s computed (value × EchelonGraph’s weight)
Severity96% × 45%
The EG Score, 9.6 of 10.
Exploitation0% × 40%
FIRST EPSS: the 30-day exploitation probability when EchelonGraph scored this CVE.
Automatability0% × 15%
CISA's BOD 26-04 default: no one has published Automatable for this CVE, and CISA treats it as “no” for a CVE not in KEV.
SSVC (CISA's decision table, applied by EchelonGraph): Track at low or medium mission impact; Track* at high (mission-essential systems).
Exploitation none (no CISA value, KEV listing or exploit code on record) · Automatable no (CISA's BOD 26-04 default) · Technical impact total (CISA's BOD 26-04 default). EchelonGraph holds no SSVC assessment of this CVE from CISA: none of these inputs is from Vulnrichment. EchelonGraph applied CISA's decision table to them; CISA publishes SSVC inputs and the table, not a decision for each CVE.
Action: Upgrade to LXD version 6.9 or later (from the CVE record's solution, Canonical Ltd.). Apply it within your standard update timelines.
EPSS PROB
0.3%
EPSS %ILE
19th
KEV
Not listed

SSVC (CISA's decision table, applied by EchelonGraph)Track at low or medium mission impact; Track* at high (mission-essential systems).

Upgrade to LXD version 6.9 or later (from the CVE record's solution, Canonical Ltd.). Apply it within your standard update timelines.

Exploitation none (no CISA value, KEV listing or exploit code on record) · Automatable no (CISA's BOD 26-04 default) · Technical impact total (CISA's BOD 26-04 default). EchelonGraph holds no SSVC assessment of this CVE from CISA: none of these inputs is from Vulnrichment. EchelonGraph applied CISA's decision table to them; CISA publishes SSVC inputs and the table, not a decision for each CVE. Mission impact is CISA's Mission & Well-being decision point, and only you can judge it. CISA's table makes it high when Mission Prevalence is Essential — the vulnerable component "directly provides capabilities that constitute at least one MEF for at least one entity" (MEF: mission essential function) — or when Public Well-Being Impact is Irreversible: "multiple fatalities are likely", the cyber-physical system "is likely lost or destroyed", "extreme or serious externalities" are imposed on other parties, or social systems such as elections or the financial grid "are destabilized and potentially collapse". CISA's decision table

BOD 26-04 (CISA's remediation timeline, Table 1)14 days if the affected system is publicly exposed; Fix on system upgrade if it is not.

In CISA KEV no (CISA's KEV catalog) · Automatable no (CISA's BOD 26-04 default) · Technical impact total (CISA's BOD 26-04 default). Where an input reads “CISA's BOD 26-04 default”, no one has published it for this CVE, and CISA's implementation guidance says: “If “Automatable” and “Technical Impact” information items about a CVE ID are not available and the CVE ID is not in the KEV Catalog, CISA will treat its values as “no” and “total,” respectively, until CISA or a third party provides metadata about the CVE ID. CISA will always provide the Vulnrichment data for a CVE ID listed in the KEV Catalog.” Whether your system is publicly exposed is yours to answer. BOD 26-04 binds US Federal Civilian Executive Branch agencies; for anyone else it is CISA's published timeline, a reference rather than an obligation. The directive · how EchelonGraph applies it

Published

June 26, 2026

Last Modified

July 2, 2026

Advisory Details (2)

Auto-updated Oct 7, 2026
Fix named in the CVE record's solution (Canonical Ltd.). Sources: github_pr, github.
githubMentions a patch (unverified)

Cross-guest volume hijack via DevLXD device patch · Advisory · canonical/lxd · GitHub

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

Security fixes from the 6.9 release

Fix merged in canonical/lxd PR #18585 on 2026-06-26 — awaiting tagged release

https://github.com/canonical/lxd/pull/18585

Weakness Classification(2)

MITRE Common Weakness Enumeration — the root-cause categories this CVE belongs to.

Data Freshness Timeline

(refreshed 10× in last 7d / 26× in last 30d)

Each row is a time one of our pipelines fetched, updated or re-scored this CVE. For example, "NVD update" means NVD published or revised its analysis for this CVE; "MITRE cvelistV5" means we ingested or refreshed it from the CNA feed. An arrow marks a change the record states ("CVSS v3 → 9.1"); EPSS and GHSA rows show the values recorded at that time, not what changed (EPSS values are rounded; hover one for the exact figures). Most recent first.

Showing the most recent 99 of 135 refreshes on record for this CVE.

A repeat, a row identical to one the same pipeline wrote less than 10 seconds earlier, is not a separate refresh and is not counted. 1 repeat row among the latest 100 is merged into the row it repeats. The 36 oldest rows on record are not shown and were not checked, so the counts can still include repeats.

  1. 2026-10-11 18:24 UTCEG score recompute
  2. 2026-10-11 14:58 UTCEG score recompute
  3. 2026-10-11 13:48 UTCEPSS rescoreEPSS 0.3% · 19th percentile
  4. 2026-10-10 19:59 UTCEPSS rescoreEPSS 0.3% · 19th percentile
  5. 2026-10-09 20:06 UTCEPSS rescoreEPSS 0.3% · 19th percentile
  6. 2026-10-08 17:11 UTCEPSS rescoreEPSS 0.3% · 19th percentile
  7. 2026-10-07 23:47 UTCEPSS rescoreEPSS 0.3% · 19th percentile
  8. 2026-10-06 15:17 UTCEPSS rescoreEPSS 0.3% · 19th percentile
  9. 2026-10-05 17:42 UTCEPSS rescoreEPSS 0.3% · 19th percentile
  10. 2026-10-04 23:21 UTCEPSS rescoreEPSS 0.3% · 19th percentile
  11. 2026-10-03 14:25 UTCEPSS rescoreEPSS 0.3% · 19th percentile
  12. 2026-10-01 19:49 UTCEPSS rescoreEPSS 0.3% · 19th percentile
  13. 2026-09-30 15:02 UTCEPSS rescoreEPSS 0.3% · 19th percentile
  14. 2026-09-29 15:20 UTCEPSS rescoreEPSS 0.3% · 19th percentile
  15. 2026-09-28 13:50 UTCEPSS rescoreEPSS 0.3% · 19th percentile
  16. 2026-09-26 15:58 UTCEPSS rescoreEPSS 0.3% · 19th percentile
  17. 2026-09-23 13:47 UTCEPSS rescoreEPSS 0.3% · 21st percentile
  18. 2026-09-23 07:51 UTCEG score recompute
  19. 2026-09-20 20:15 UTCEPSS rescoreEPSS 0.3% · 21st percentile
  20. 2026-09-18 19:27 UTCEPSS rescoreEPSS 0.3% · 21st percentile
  21. 2026-09-18 07:13 UTCEG score recompute
  22. 2026-09-16 05:14 UTCEPSS rescoreEPSS 0.3% · 21st percentile
  23. 2026-09-14 01:11 UTCEG score recompute
  24. 2026-09-13 16:46 UTCEPSS rescoreEPSS 0.3% · 21st percentile
  25. 2026-09-12 15:35 UTCEG score recompute
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  1. 2026-09-12 15:00 UTCEPSS rescoreEPSS 0.3% · 21st percentile
  2. 2026-09-11 14:52 UTCEPSS rescoreEPSS 0.3% · 21st percentile
  3. 2026-09-11 09:36 UTCEPSS rescoreEPSS 0.3% · 21st percentile
  4. 2026-09-10 09:34 UTCEPSS rescoreEPSS 0.3% · 21st percentile
  5. 2026-09-08 22:00 UTCEPSS rescoreEPSS 0.3% · 21st percentile
  6. 2026-09-07 16:01 UTCEPSS rescoreEPSS 0.3% · 21st percentile
  7. 2026-09-06 13:47 UTCEPSS rescoreEPSS 0.3% · 21st percentile
  8. 2026-09-04 05:06 UTCEPSS rescoreEPSS 0.3% · 20th percentile
  9. 2026-09-02 14:11 UTCEPSS rescoreEPSS 0.3% · 20th percentile
  10. 2026-09-01 13:53 UTCEPSS rescoreEPSS 0.3% · 20th percentile
  11. 2026-09-01 04:39 UTCEPSS rescoreEPSS 0.3% · 20th percentile
  12. 2026-08-30 19:22 UTCEG score recompute
  13. 2026-08-30 19:17 UTCEPSS rescoreEPSS 0.3% · 20th percentile
  14. 2026-08-30 01:21 UTCEPSS rescoreEPSS 0.3% · 20th percentile
  15. 2026-08-28 21:40 UTCEPSS rescoreEPSS 0.3% · 20th percentile
  16. 2026-08-27 23:06 UTCEG score recompute
  17. 2026-08-25 13:48 UTCEPSS rescoreEPSS 0.3% · 20th percentile
  18. 2026-08-24 21:49 UTCEG score recompute
  19. 2026-08-24 12:54 UTCEG score recompute
  20. 2026-08-22 01:30 UTCEG score recompute
  21. 2026-08-21 23:48 UTCEPSS rescoreEPSS 0.2% · 14th percentile
  22. 2026-08-21 00:14 UTCEG score recompute
  23. 2026-08-20 22:55 UTCEPSS rescoreEPSS 0.2% · 14th percentile
  24. 2026-08-20 06:51 UTCEG score recompute
  25. 2026-08-19 17:03 UTCEPSS rescoreEPSS 0.2% · 14th percentile
  26. 2026-08-18 23:56 UTCEG score recompute
  27. 2026-08-18 13:48 UTCEPSS rescoreEPSS 0.2% · 14th percentile
  28. 2026-08-17 17:16 UTCEG score recompute
  29. 2026-08-16 16:52 UTCEG score recompute
  30. 2026-08-16 14:56 UTCEPSS rescoreEPSS 0.2% · 14th percentile
  31. 2026-08-16 04:43 UTCEG score recompute
  32. 2026-08-16 02:14 UTCEPSS rescoreEPSS 0.2% · 14th percentile
  33. 2026-08-15 04:25 UTCEG score recompute
  34. 2026-08-15 01:30 UTCEPSS rescoreEPSS 0.2% · 14th percentile
  35. 2026-08-14 00:01 UTCEG score recompute
  36. 2026-08-13 22:00 UTCEPSS rescoreEPSS 0.2% · 14th percentile
  37. 2026-08-12 15:05 UTCEG score recompute
  38. 2026-08-12 13:50 UTCEPSS rescoreEPSS 0.2% · 14th percentile
  39. 2026-08-11 14:45 UTCEG score recompute
  40. 2026-08-11 13:42 UTCEPSS rescoreEPSS 0.2% · 14th percentile
  41. 2026-08-11 02:37 UTCEG score recompute
  42. 2026-08-10 23:59 UTCEPSS rescoreEPSS 0.2% · 14th percentile
  43. 2026-08-09 13:58 UTCEG score recompute
  44. 2026-08-09 13:46 UTCEPSS rescoreEPSS 0.2% · 14th percentile
  45. 2026-08-08 17:43 UTCEG score recompute
  46. 2026-08-08 16:37 UTCEPSS rescoreEPSS 0.2% · 14th percentile
  47. 2026-08-07 17:25 UTCEG score recompute
  48. 2026-08-06 17:08 UTCEG score recompute
  49. 2026-08-06 13:46 UTCEPSS rescoreEPSS 0.2% · 14th percentile
  50. 2026-08-05 20:54 UTCEG score recompute
  51. 2026-08-05 19:17 UTCEPSS rescoreEPSS 0.2% · 14th percentile
  52. 2026-08-04 19:02 UTCEG score recompute
  53. 2026-08-04 15:09 UTCEPSS rescoreEPSS 0.2% · 14th percentile
  54. 2026-08-04 14:58 UTCEG score recompute
  55. 2026-08-04 10:38 UTCEPSS rescoreEPSS 0.2% · 14th percentile
  56. 2026-08-03 13:56 UTCEG score recompute
  57. 2026-08-03 10:35 UTCEPSS rescoreEPSS 0.2% · 14th percentile
  58. 2026-08-02 03:51 UTCEG score recompute
  59. 2026-08-02 02:26 UTCEPSS rescoreEPSS 0.2% · 14th percentile
  60. 2026-08-01 07:30 UTCEG score recompute
  61. 2026-08-01 04:15 UTCEPSS rescoreEPSS 0.2% · 14th percentile
  62. 2026-07-30 17:45 UTCEG score recompute
  63. 2026-07-30 16:27 UTCEPSS rescoreEPSS 0.2% · 14th percentile
  64. 2026-07-30 13:23 UTCEG score recompute
  65. 2026-07-30 04:20 UTCEG score recompute
  66. 2026-07-30 01:30 UTCEPSS rescoreEPSS 0.2% · 14th percentile
  67. 2026-07-28 20:40 UTCEG score recompute
  68. 2026-07-28 15:36 UTCEPSS rescoreEPSS 0.2% · 14th percentile
  69. 2026-07-27 17:06 UTCEG score recompute
  70. 2026-07-27 14:13 UTCEPSS rescoreEPSS 0.2% · 14th percentile
  71. 2026-07-26 18:42 UTCEG score recompute
  72. 2026-07-26 14:54 UTCEPSS rescoreEPSS 0.2% · 14th percentile
  73. 2026-07-26 14:34 UTCEG score recompute
  74. 2026-07-25 14:17 UTCEPSS rescoreEPSS 0.2% · 14th percentile

Frequently asked(5)

What is CVE-2026-12411?
CVE-2026-12411 is a critical-severity vulnerability; its CVE record was published on June 26, 2026. 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.
When was the CVE record for CVE-2026-12411 published?
The CVE record for CVE-2026-12411 was published on June 26, 2026. That is the record's publication date; the vulnerability itself may have been made public earlier. EchelonGraph's copy of the record carries a last-modified date of July 2, 2026; the record at its source may have been updated since.
Is CVE-2026-12411 actively exploited?
CVE-2026-12411 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 0.3% probability of exploitation in the next 30 days (19th percentile of EPSS-scored CVEs).
What is the CVSS score of CVE-2026-12411?
CVE-2026-12411 has a CVSS v3 base score of 9.6 (NVD).
How do I remediate CVE-2026-12411?
The CVE record's solution for CVE-2026-12411, written by its CNA Canonical Ltd., names the fix: "Upgrade to LXD version 6.9 or later."

Dependency Blast Radius

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