CVE-2026-75935

HIGHPre-NVD 7.57.5—
EchelonGraph scoreMEDIUM confidence

This high-severity CVE scores 7.5 under a secondary CVSS source (NVD's own analysis pending). EPSS exploit probability: 0.6% (47th 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, secondary
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

A fix is available — apply it.

Uncontrolled memory allocation in the binary Ion stream cursor in Amazon ion-java before 1.12.0 might allow remote actors to cause a denial of service via a crafted Ion binary document containing a declared-length field that causes excessive heap preallocation.

To remediate this issue, users should upgrade to version 1.12.0.

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: 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
47th
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

August 18, 2026

Last Modified

August 20, 2026

Advisory Details (2)

Auto-updated Aug 18, 2026
Patch available. Sources: github_release, github.
github Patch Available

Memory-amplification denial of service via declared-length preallocation in Amazon ion-java · Advisory · amazon-ion/ion-java · GitHub

https://github.com/amazon-ion/ion-java/security/advisories/GHSA-822f-6gg9-whr5
github_release Patch Available

v1.12.0

Patch available: amazon-ion/ion-java v1.12.0

https://github.com/amazon-ion/ion-java/releases/tag/v1.12.0

Vendor Advisories for CVE-2026-75935(1)

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

Weakness Classification(1)

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

Data Freshness Timeline

(refreshed 12× in last 7d / 51× 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.

  1. 2026-10-05 09:37 UTCEG score recompute
  2. 2026-10-04 23:22 UTCEPSS rescore
  3. 2026-10-03 17:37 UTCEG score recompute
  4. 2026-10-03 14:26 UTCEPSS rescore
  5. 2026-10-03 02:45 UTCEG score recompute
  6. 2026-10-02 01:26 UTCEG score recompute
  7. 2026-10-01 19:50 UTCEPSS rescore
  8. 2026-09-30 21:37 UTCEG score recompute
  9. 2026-09-30 09:47 UTCEG score recompute
  10. 2026-09-29 15:24 UTCEPSS rescore
  11. 2026-09-28 21:55 UTCEG score recompute
  12. 2026-09-28 13:52 UTCEPSS rescore
  13. 2026-09-27 19:32 UTCEG score recompute
  14. 2026-09-27 13:48 UTCEPSS rescore
  15. 2026-09-27 07:54 UTCEG score recompute
  16. 2026-09-26 15:59 UTCEPSS rescore
  17. 2026-09-26 00:28 UTCEPSS rescore
  18. 2026-09-25 01:25 UTCEG score recompute
  19. 2026-09-24 14:04 UTCEPSS rescore
  20. 2026-09-23 20:38 UTCEG score recompute
  21. 2026-09-23 17:54 UTCEPSS rescore
  22. 2026-09-22 21:21 UTCEG score recompute
  23. 2026-09-22 16:01 UTCEPSS rescore
  24. 2026-09-21 21:40 UTCEG score recompute
  25. 2026-09-21 21:09 UTCEPSS rescore
Show 62 more
  1. 2026-09-20 22:22 UTCEG score recompute
  2. 2026-09-20 20:16 UTCEPSS rescore
  3. 2026-09-19 22:52 UTCEG score recompute
  4. 2026-09-18 23:35 UTCEG score recompute
  5. 2026-09-18 19:28 UTCEPSS rescore
  6. 2026-09-18 00:15 UTCEG score recompute
  7. 2026-09-16 23:20 UTCEG score recompute
  8. 2026-09-16 14:08 UTCEPSS rescore
  9. 2026-09-16 11:41 UTCEG score recompute
  10. 2026-09-16 05:15 UTCEPSS rescore
  11. 2026-09-15 11:43 UTCEG score recompute
  12. 2026-09-15 03:12 UTCEPSS rescore
  13. 2026-09-14 00:04 UTCEG score recompute
  14. 2026-09-13 00:48 UTCEG score recompute
  15. 2026-09-12 15:02 UTCEPSS rescore
  16. 2026-09-12 01:31 UTCEG score recompute
  17. 2026-09-11 14:53 UTCEPSS rescore
  18. 2026-09-11 13:52 UTCEG score recompute
  19. 2026-09-10 14:32 UTCEG score recompute
  20. 2026-09-10 09:35 UTCEPSS rescore
  21. 2026-09-09 03:24 UTCEG score recompute
  22. 2026-09-08 22:01 UTCEPSS rescore
  23. 2026-09-07 16:07 UTCEG score recompute
  24. 2026-09-06 14:16 UTCEG score recompute
  25. 2026-09-06 13:48 UTCEPSS rescore
  26. 2026-09-06 02:38 UTCEG score recompute
  27. 2026-09-04 15:39 UTCEG score recompute
  28. 2026-09-04 05:07 UTCEPSS rescore
  29. 2026-09-02 16:32 UTCEG score recompute
  30. 2026-09-02 14:12 UTCEPSS rescore
  31. 2026-09-01 14:16 UTCEG score recompute
  32. 2026-09-01 13:54 UTCEPSS rescore
  33. 2026-09-01 04:40 UTCEPSS rescore
  34. 2026-09-01 04:40 UTCEPSS rescore
  35. 2026-08-31 02:23 UTCEG score recompute
  36. 2026-08-30 19:18 UTCEPSS rescore
  37. 2026-08-30 19:17 UTCEPSS rescore
  38. 2026-08-30 03:06 UTCEG score recompute
  39. 2026-08-30 01:22 UTCEPSS rescore
  40. 2026-08-29 03:46 UTCEG score recompute
  41. 2026-08-28 21:42 UTCEPSS rescore
  42. 2026-08-27 20:36 UTCEG score recompute
  43. 2026-08-27 14:25 UTCEPSS rescore
  44. 2026-08-26 21:20 UTCEG score recompute
  45. 2026-08-26 14:47 UTCEPSS rescore
  46. 2026-08-25 21:59 UTCEG score recompute
  47. 2026-08-25 13:49 UTCEPSS rescore
  48. 2026-08-24 22:43 UTCEG score recompute
  49. 2026-08-24 14:18 UTCEPSS rescore
  50. 2026-08-24 11:03 UTCEG score recompute
  51. 2026-08-23 11:46 UTCEG score recompute
  52. 2026-08-23 00:19 UTCEPSS rescore
  53. 2026-08-22 00:51 UTCEG score recompute
  54. 2026-08-21 23:49 UTCEPSS rescore
  55. 2026-08-21 01:34 UTCEG score recompute
  56. 2026-08-20 22:56 UTCEPSS rescore
  57. 2026-08-20 01:04 UTCEG score recompute
  58. 2026-08-19 17:04 UTCEPSS rescore
  59. 2026-08-19 13:24 UTCEG score recompute
  60. 2026-08-18 20:22 UTCEG score recompute
  61. 2026-08-18 19:45 UTCEG score recompute
  62. 2026-08-18 19:43 UTCMITRE cvelistV5first tracked

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Frequently asked(5)

What is CVE-2026-75935?
CVE-2026-75935 is a high vulnerability published on August 18, 2026. Uncontrolled memory allocation in the binary Ion stream cursor in Amazon ion-java before 1.12.0 might allow remote actors to cause a denial of service via a crafted Ion binary document containing a declared-length field that causes excessive heap preallocation. To remediate this issue, users should…
When was CVE-2026-75935 disclosed?
CVE-2026-75935 was first published on August 18, 2026, with the most recent update on August 20, 2026. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.
Is CVE-2026-75935 actively exploited?
CVE-2026-75935 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 0.6% probability of exploitation in the next 30 days (47th percentile of EPSS-scored CVEs).
What is the CVSS score of CVE-2026-75935?
CVE-2026-75935 has a CVSS base score of 7.5 (a secondary CVSS source that NVD displays; NVD's own analysis pending).
How do I remediate CVE-2026-75935?
A fix for CVE-2026-75935 is available: update to the fixed version the vendor names in its advisory. The vendor advisories EchelonGraph has for CVE-2026-75935 are linked in the Vendor Advisories panel on this page.

Dependency Blast Radius

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