CVE-2026-40006

HIGHPre-NVD 7.57.5—
EchelonGraph scoreMEDIUM confidence

Score 7.5 from GitHub Security Advisory (severity: HIGH) published 2026-07-10. CISA-ADP (Vulnrichment) CVSS v3.1 baseline 7.5; sources differ by 0.0.

Triggered by: GitHub Security Advisory CVSS
Sources: cisa-adp, epss, ghsa
7.5EG
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: 7.5Exploit: None knownExposed services: Not assessed

The CVE record names the fixed release — apply it.

Memory Allocation with Excessive Size Value, Allocation of Resources Without Limits or Throttling, Missing Authentication for Critical Function vulnerability in Apache IoTDB. When pipe_air_gap_receiver_enabled=true, the IoTDB AirGap pipe receiver accepts raw TCP connections on port 9780 with no authentication. The readLength method reads an attacker-controlled 32-bit integer from the socket and readData passes it directly to new byte[length] with no upper-bound check. An unauthenticated attacker can cause the JVM to attempt an allocation of up to 2,147,483,647 bytes per connection, exhausting heap memory and crashing or severely degrading the DataNode process.

This issue affects Apache IoTDB: from 1.0.0 before 2.0.10.

Users are recommended to upgrade to version 2.0.10, which fixes the issue.

CVSS v3
7.5
EG Score
7.5HIGHmedium confidence
EG Risk
49
EG Risk 49/100CISA 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
Severity75% × 45%
Exploitation1% × 40%
Automatability100% × 15%
CISA SSVC: Track at low or medium mission impact; Attend at high (mission-essential systems).
Action: The CVE record names the fixed release. 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).

The CVE record names the fixed release. 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 10, 2026

Last Modified

July 10, 2026

Advisory Details (2)

Auto-updated Jul 10, 2026
Fix named in the CVE record.
generic

oss-security - CVE-2026-40006: Apache IoTDB: Unauthenticated heap-exhaustion DoS via unbounded allocation in IoTDB AirGap pipe receiver

http://www.openwall.com/lists/oss-security/2026/07/10/3
generic
https://lists.apache.org/thread/rfpt7m9fvdrw37r3ow5omp2n914z6zqk

Vendor Advisories for CVE-2026-40006(1)

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

Weakness Classification(3)

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

Data Freshness Timeline

(refreshed 7× in last 7d / 41× 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 219 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 17:12 UTCEPSS rescore
  4. 2026-10-07 23:48 UTCEPSS rescore
  5. 2026-10-06 15:17 UTCEPSS rescore
  6. 2026-10-05 17:43 UTCEPSS rescore
  7. 2026-10-04 23:22 UTCEPSS rescore
  8. 2026-10-03 14:25 UTCEPSS rescore
  9. 2026-10-01 19:50 UTCEPSS rescore
  10. 2026-10-01 15:55 UTCEG score recompute
  11. 2026-10-01 15:55 UTCGHSA enrichment
  12. 2026-09-30 15:03 UTCEPSS rescore
  13. 2026-09-28 09:52 UTCEG score recompute
  14. 2026-09-28 09:52 UTCGHSA enrichment
  15. 2026-09-27 13:48 UTCEPSS rescore
  16. 2026-09-26 15:58 UTCEPSS rescore
  17. 2026-09-26 00:26 UTCEPSS rescore
  18. 2026-09-24 11:19 UTCEG score recompute
  19. 2026-09-24 11:19 UTCGHSA enrichment
  20. 2026-09-23 05:49 UTCEG score recompute
  21. 2026-09-23 05:49 UTCGHSA enrichment
  22. 2026-09-20 20:15 UTCEPSS rescore
  23. 2026-09-18 19:28 UTCEPSS rescore
  24. 2026-09-18 19:28 UTCEPSS rescore
  25. 2026-09-18 05:24 UTCEG score recompute
Show 75 more
  1. 2026-09-18 05:24 UTCGHSA enrichment
  2. 2026-09-17 19:30 UTCEPSS rescore
  3. 2026-09-16 14:08 UTCEPSS rescore
  4. 2026-09-16 05:15 UTCEPSS rescore
  5. 2026-09-15 03:11 UTCEPSS rescore
  6. 2026-09-13 23:44 UTCEG score recompute
  7. 2026-09-13 23:44 UTCGHSA enrichment
  8. 2026-09-13 16:47 UTCEPSS rescore
  9. 2026-09-13 08:15 UTCGHSA enrichment
  10. 2026-09-12 15:37 UTCEG score recompute
  11. 2026-09-12 15:37 UTCGHSA enrichment
  12. 2026-09-12 15:01 UTCEPSS rescore
  13. 2026-09-12 03:07 UTCEG score recompute
  14. 2026-09-12 03:07 UTCGHSA enrichment
  15. 2026-09-11 14:53 UTCEPSS rescore
  16. 2026-09-11 09:37 UTCEPSS rescore
  17. 2026-09-10 09:34 UTCEPSS rescore
  18. 2026-09-08 22:00 UTCEPSS rescore
  19. 2026-09-08 03:07 UTCEG score recompute
  20. 2026-09-08 03:07 UTCGHSA enrichment
  21. 2026-09-07 16:01 UTCEPSS rescore
  22. 2026-09-06 13:58 UTCEG score recompute
  23. 2026-09-06 13:58 UTCGHSA enrichment
  24. 2026-09-06 13:47 UTCEPSS rescore
  25. 2026-09-05 21:50 UTCEG score recompute
  26. 2026-09-05 21:50 UTCGHSA enrichment
  27. 2026-09-04 05:06 UTCEPSS rescore
  28. 2026-09-02 14:12 UTCEPSS rescore
  29. 2026-09-01 13:53 UTCEPSS rescore
  30. 2026-09-01 04:39 UTCEPSS rescore
  31. 2026-08-30 19:17 UTCEPSS rescore
  32. 2026-08-30 19:10 UTCGHSA enrichment
  33. 2026-08-30 06:40 UTCEG score recompute
  34. 2026-08-30 06:40 UTCGHSA enrichment
  35. 2026-08-30 01:22 UTCEPSS rescore
  36. 2026-08-28 21:41 UTCEPSS rescore
  37. 2026-08-27 21:43 UTCEG score recompute
  38. 2026-08-27 21:42 UTCGHSA enrichment
  39. 2026-08-27 14:25 UTCEPSS rescore
  40. 2026-08-27 00:52 UTCEG score recompute
  41. 2026-08-27 00:52 UTCGHSA enrichment
  42. 2026-08-26 14:46 UTCEPSS rescore
  43. 2026-08-26 03:43 UTCEG score recompute
  44. 2026-08-26 03:43 UTCGHSA enrichment
  45. 2026-08-25 13:49 UTCEPSS rescore
  46. 2026-08-25 11:08 UTCGHSA enrichment
  47. 2026-08-24 22:03 UTCEG score recompute
  48. 2026-08-24 22:03 UTCGHSA enrichment
  49. 2026-08-24 09:33 UTCEG score recompute
  50. 2026-08-24 09:33 UTCGHSA enrichment
  51. 2026-08-23 18:46 UTCGHSA enrichment
  52. 2026-08-23 06:16 UTCEG score recompute
  53. 2026-08-23 06:16 UTCGHSA enrichment
  54. 2026-08-23 00:19 UTCEPSS rescore
  55. 2026-08-22 17:45 UTCGHSA enrichment
  56. 2026-08-22 05:13 UTCEG score recompute
  57. 2026-08-22 05:13 UTCGHSA enrichment
  58. 2026-08-21 23:49 UTCEPSS rescore
  59. 2026-08-21 16:42 UTCGHSA enrichment
  60. 2026-08-21 03:46 UTCEG score recompute
  61. 2026-08-21 03:46 UTCGHSA enrichment
  62. 2026-08-20 22:55 UTCEPSS rescore
  63. 2026-08-20 15:13 UTCGHSA enrichment
  64. 2026-08-20 01:36 UTCEG score recompute
  65. 2026-08-20 01:36 UTCGHSA enrichment
  66. 2026-08-19 17:03 UTCEPSS rescore
  67. 2026-08-19 09:16 UTCGHSA enrichment
  68. 2026-08-18 20:37 UTCEG score recompute
  69. 2026-08-18 20:37 UTCGHSA enrichment
  70. 2026-08-18 13:48 UTCEPSS rescore
  71. 2026-08-18 03:53 UTCGHSA enrichment
  72. 2026-08-17 15:23 UTCEG score recompute
  73. 2026-08-17 15:23 UTCGHSA enrichment
  74. 2026-08-17 13:47 UTCEPSS rescore
  75. 2026-08-17 02:52 UTCEG score recompute

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Frequently asked(5)

What is CVE-2026-40006?
CVE-2026-40006 is a high vulnerability published on July 10, 2026. Memory Allocation with Excessive Size Value, Allocation of Resources Without Limits or Throttling, Missing Authentication for Critical Function vulnerability in Apache IoTDB. When pipeairgapreceiverenabled=true, the IoTDB AirGap pipe receiver accepts raw TCP connections on port 9780 with no…
When was CVE-2026-40006 disclosed?
CVE-2026-40006 was first published on July 10, 2026. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.
Is CVE-2026-40006 actively exploited?
CVE-2026-40006 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-2026-40006?
CVE-2026-40006 has a CVSS v3.1 base score of 7.5 (CISA-ADP / Vulnrichment enrichment; NVD's own analysis pending).
How do I remediate CVE-2026-40006?
The CVE record for CVE-2026-40006 names the fix: "Users are recommended to upgrade to version 2.0.10, which fixes the issue." The vendor advisories EchelonGraph has for CVE-2026-40006 are linked in the Vendor Advisories panel on this page.

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