CVE-2026-64825

CRITICALPre-NVD 9.39.3—
EchelonGraph scoreMEDIUM confidence

Score 9.3 from GitHub Security Advisory (severity: CRITICAL) published 2026-07-21. A secondary CVSS source baseline 9.3; sources differ by 0.0.

Triggered by: GitHub Security Advisory CVSS
Sources: epss, ghsa, secondary
9.3EG
EchelonGraph verdictPlan a fixSerious severity, but no confirmed exploitation yet.
  • High severity, but no confirmed exploitation yet
CISA-KEV: Not listedEPSS PROB: 0.6%CVSS: 9.3Exploit: None knownExposed services: Not assessed

A fix is available — apply it.

Home Assistant Core before 2026.6.0 contains a path traversal vulnerability that allows unauthenticated attackers to write arbitrary files to any directory on the host filesystem by uploading a crafted backup archive during the initial onboarding window. Attackers can manipulate the 'name' field inside the uploaded archive's backup.json to supply an absolute path, causing pathlib.Path.__truediv__ to discard the configured backup directory prefix and write attacker-controlled content to arbitrary locations, with full filesystem access when the process runs as root.

CVSS v3
9.3
EG Score
9.3CRITICALmedium confidence
EG Risk
57
EG Risk 57/100CISA SSVC

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
Severity93% × 45%
Exploitation1% × 40%
Automatability100% × 15%
CISA SSVC: Track at low or medium mission impact; Attend at high (mission-essential systems).
Action: A fix is available. Apply it within your standard update timelines at low or medium mission impact and sooner than that at high.
EPSS PROB
0.6%
EPSS %ILE
46th
KEV
Not listed

CISA SSVCTrack at low or medium mission impact; Attend at high (mission-essential systems).

A fix is available. Apply it within your standard update timelines at low or medium mission impact and sooner than that at high.

Exploitation none (CISA Vulnrichment) · Automatable yes (CISA Vulnrichment) · Technical impact partial (CISA Vulnrichment). Mission impact is CISA's Mission & Well-being decision point, and only you can judge it: high means the affected system is essential to your organisation's mission, or its compromise could cause irreversible harm to people. CISA's decision table

Published

July 21, 2026

Last Modified

October 8, 2026

Advisory Details (4)

Auto-updated Oct 8, 2026
Patch available. Sources: github_release, github_pr, github_commit.
generic

Home Assistant Core < 2026.6.0 Path Traversal File Write via Backup Upload | Advisories | VulnCheck

https://www.vulncheck.com/advisories/home-assistant-core-path-traversal-file-write-via-backup-upload
github_commit Patch Available

commit 567fe8582898 (home-assistant/core)

Patch available: home-assistant/core 2026.8.0b5 (contains commit 567fe8582898)

https://github.com/home-assistant/core/commit/567fe858289876b68b8162a77bd46e1e1af79752
github_pr Patch Available

Reject backup uploads with unsafe inner name

Patch available: home-assistant/core 2026.8.0b5 (PR #172368 merged 2026-05-28)

https://github.com/home-assistant/core/pull/172368
github_release Patch Available

2026.6.0

Patch available: home-assistant/core 2026.6.0

https://github.com/home-assistant/core/releases/tag/2026.6.0

Vendor Advisories for CVE-2026-64825(1)

These vendors published their own advisory mentioning this CVE — often with vendor-specific remediation steps + affected product lists not in NVD.

Affected Packages

(1 across 1 ecosystem)
PyPI(1)
PackageVulnerable rangeFix by version rangeDependents
homeassistant0.10.0 ... 2026.6.0b4 (1583 versions)
  • every version up to 2026.6.0: fixed in 2026.6.0
—

Weakness Classification(1)

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

Data Freshness Timeline

(refreshed 10× in last 7d / 36× in last 30d)

Each row is a source pipeline that fetched or updated this CVE on that date, with what changed. 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. Most recent first.

Showing the most recent 100 of 249 total refreshes for this CVE.

  1. 2026-10-10 20:00 UTCEPSS rescore
  2. 2026-10-09 20:07 UTCEPSS rescore
  3. 2026-10-08 17:13 UTCEPSS rescore
  4. 2026-10-08 16:39 UTCEG score recompute
  5. 2026-10-08 15:45 UTCEG score recompute
  6. 2026-10-07 23:48 UTCEPSS rescore
  7. 2026-10-06 15:18 UTCEPSS rescore
  8. 2026-10-05 17:43 UTCEPSS rescore
  9. 2026-10-04 23:22 UTCEPSS rescore
  10. 2026-10-04 14:49 UTCEG score recompute
  11. 2026-10-03 14:26 UTCEPSS rescore
  12. 2026-10-02 17:56 UTCEPSS rescore
  13. 2026-10-01 19:50 UTCEPSS rescore
  14. 2026-10-01 07:30 UTCEG score recompute
  15. 2026-09-30 15:03 UTCEPSS rescore
  16. 2026-09-28 13:51 UTCEPSS rescore
  17. 2026-09-28 06:09 UTCEG score recompute
  18. 2026-09-26 15:59 UTCEPSS rescore
  19. 2026-09-24 03:23 UTCEG score recompute
  20. 2026-09-23 17:54 UTCEPSS rescore
  21. 2026-09-23 01:26 UTCEG score recompute
  22. 2026-09-20 20:16 UTCEPSS rescore
  23. 2026-09-20 05:58 UTCEG score recompute
  24. 2026-09-19 00:22 UTCEG score recompute
  25. 2026-09-18 19:28 UTCEPSS rescore
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  1. 2026-09-18 03:49 UTCEG score recompute
  2. 2026-09-17 05:06 UTCEG score recompute
  3. 2026-09-16 14:08 UTCEPSS rescore
  4. 2026-09-16 12:38 UTCEG score recompute
  5. 2026-09-16 05:15 UTCEPSS rescore
  6. 2026-09-13 22:40 UTCEG score recompute
  7. 2026-09-12 19:01 UTCEG score recompute
  8. 2026-09-11 18:17 UTCEG score recompute
  9. 2026-09-11 14:53 UTCEPSS rescore
  10. 2026-09-11 09:37 UTCEPSS rescore
  11. 2026-09-11 09:04 UTCEG score recompute
  12. 2026-09-09 11:31 UTCEG score recompute
  13. 2026-09-08 22:01 UTCEPSS rescore
  14. 2026-09-07 22:37 UTCEG score recompute
  15. 2026-09-07 16:01 UTCEPSS rescore
  16. 2026-09-06 14:55 UTCEG score recompute
  17. 2026-09-06 13:47 UTCEPSS rescore
  18. 2026-09-05 19:50 UTCEG score recompute
  19. 2026-09-05 15:31 UTCEPSS rescore
  20. 2026-09-05 08:56 UTCEG score recompute
  21. 2026-09-04 05:07 UTCEPSS rescore
  22. 2026-09-02 14:12 UTCEPSS rescore
  23. 2026-09-02 00:57 UTCEG score recompute
  24. 2026-09-01 13:54 UTCEPSS rescore
  25. 2026-09-01 04:40 UTCEPSS rescore
  26. 2026-08-30 23:11 UTCEG score recompute
  27. 2026-08-30 19:17 UTCEPSS rescore
  28. 2026-08-30 02:17 UTCEG score recompute
  29. 2026-08-30 01:22 UTCEPSS rescore
  30. 2026-08-28 21:42 UTCEPSS rescore
  31. 2026-08-27 15:16 UTCEG score recompute
  32. 2026-08-26 21:28 UTCEG score recompute
  33. 2026-08-26 14:47 UTCEPSS rescore
  34. 2026-08-25 14:40 UTCEG score recompute
  35. 2026-08-25 13:49 UTCEPSS rescore
  36. 2026-08-24 18:49 UTCEG score recompute
  37. 2026-08-24 12:53 UTCEG score recompute
  38. 2026-08-23 01:22 UTCEG score recompute
  39. 2026-08-23 00:19 UTCEPSS rescore
  40. 2026-08-22 01:52 UTCEG score recompute
  41. 2026-08-21 23:49 UTCEPSS rescore
  42. 2026-08-21 02:20 UTCEG score recompute
  43. 2026-08-20 22:55 UTCEPSS rescore
  44. 2026-08-20 22:25 UTCEG score recompute
  45. 2026-08-19 22:36 UTCEG score recompute
  46. 2026-08-19 17:04 UTCEPSS rescore
  47. 2026-08-18 19:33 UTCEG score recompute
  48. 2026-08-18 13:48 UTCEPSS rescore
  49. 2026-08-17 14:04 UTCEG score recompute
  50. 2026-08-17 13:47 UTCEPSS rescore
  51. 2026-08-16 18:30 UTCEG score recompute
  52. 2026-08-16 14:56 UTCEPSS rescore
  53. 2026-08-16 02:50 UTCEG score recompute
  54. 2026-08-15 02:35 UTCEG score recompute
  55. 2026-08-15 01:30 UTCEPSS rescore
  56. 2026-08-13 23:10 UTCEG score recompute
  57. 2026-08-13 22:00 UTCEPSS rescore
  58. 2026-08-13 15:20 UTCGHSA enrichment
  59. 2026-08-13 11:22 UTCGHSA enrichment
  60. 2026-08-13 07:27 UTCGHSA enrichment
  61. 2026-08-13 03:31 UTCGHSA enrichment
  62. 2026-08-12 23:36 UTCGHSA enrichment
  63. 2026-08-12 19:41 UTCGHSA enrichment
  64. 2026-08-12 15:46 UTCEG score recompute
  65. 2026-08-12 15:46 UTCGHSA enrichment
  66. 2026-08-12 13:51 UTCEPSS rescore
  67. 2026-08-12 11:51 UTCGHSA enrichment
  68. 2026-08-12 07:55 UTCGHSA enrichment
  69. 2026-08-12 04:00 UTCGHSA enrichment
  70. 2026-08-12 00:04 UTCGHSA enrichment
  71. 2026-08-11 20:08 UTCGHSA enrichment
  72. 2026-08-11 16:13 UTCEG score recompute
  73. 2026-08-11 16:13 UTCGHSA enrichment
  74. 2026-08-11 12:18 UTCGHSA enrichment
  75. 2026-08-11 08:23 UTCGHSA enrichment

Related CVEs(same product + same CWE)

Frequently asked(5)

What is CVE-2026-64825?
CVE-2026-64825 is a critical vulnerability published on July 21, 2026. Home Assistant Core before 2026.6.0 contains a path traversal vulnerability that allows unauthenticated attackers to write arbitrary files to any directory on the host filesystem by uploading a crafted backup archive during the initial onboarding window. Attackers can manipulate the 'name' field…
When was CVE-2026-64825 disclosed?
CVE-2026-64825 was first published on July 21, 2026, with the most recent update on October 8, 2026. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.
Is CVE-2026-64825 actively exploited?
CVE-2026-64825 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 0.6% probability of exploitation in the next 30 days (46th percentile of EPSS-scored CVEs).
What is the CVSS score of CVE-2026-64825?
CVE-2026-64825 has a CVSS base score of 9.3 (a secondary CVSS source that NVD displays; NVD's own analysis pending).
How do I remediate CVE-2026-64825?
A fix for CVE-2026-64825 is available: update to the fixed version the vendor names in its advisory. The vendor advisories EchelonGraph has for CVE-2026-64825 are linked in the Vendor Advisories panel on this page.

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