CVE-2026-19025

MEDIUMPre-NVD 6.86.8—
EchelonGraph scoreMEDIUM confidence

This medium-severity CVE scores 6.8 under a secondary CVSS source (NVD's own analysis pending). EPSS exploit probability: 0.1%, top 98% of all CVEs by exploit prediction. 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
Trending — 4 sources updated this weekElevated
6.8EG
EchelonGraph verdictMonitorLow exploitation likelihood right now — keep watching.
  • Lower severity and no public exploit yet
CISA-KEV: Not listedEPSS PROB: 0%CVSS: 6.8Exploit: Elevated riskExposed: 0

A fix is available — apply it.

H5O__layout_decode in H5Olayout.c in HDF5 through 2.3.0 does not validate that a chunked dataset's stored chunk-layout dimensionality matches its dataspace rank when an existing dataset is opened, whereas this check is performed only at dataset-creation time. This allows attackers to cause a denial of service (divide-by-zero and application crash in H5S__hyper_iter_get_seq_list in src/H5Shyper.c) via a crafted HDF5 file with mismatched chunk/dataspace ranks that is opened and read via H5Dopen2 and H5Dread, e.g. by the h5repack tool.

CVSS v3
6.8
EG Score
6.8(medium)
EG Risk
47(Track)
EG Risk 47/100SSVC: Track

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
Severity68% × 45%
Exploitation40% × 40%
Automatability0% × 15%
Action: Routine — remediate on your standard cadence.
EPSS PROB
0%
EPSS %ILE
2%
KEV
Not listed

Published

August 5, 2026

Last Modified

August 31, 2026

Advisory Details (1)

Auto-updated Aug 5, 2026
No patch confirmed yet.
generic

h5repack: SIGFPE in H5S__hyper_iter_get_seq_list when repacking dataset · Issue #6491 · HDFGroup/hdf5 · GitHub

https://github.com/HDFGroup/hdf5/issues/6491

Vendor Advisories for CVE-2026-19025(3)

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

Patch Availability(1)

Vendor / EcosystemFixed in / PatchReleasedSource
redhathdf5-main-2.2.0-0.1.1.hum12026-08-31redhat

Patches are aggregated from vendor advisories (Red Hat, Microsoft, Cisco, GitHub) and package ecosystems (OSV, GHSA). Multiple rows for the same upstream release have been deduplicated.

Affected Packages

(4 across 4 ecosystems)
Debian:11(1)
PackageVulnerable rangeFixed inDependents
hdf51.10.10+repack-1 ... 2.1.0+repack-1~exp9 (83 versions)——
Debian:12(1)
PackageVulnerable rangeFixed inDependents
hdf51.10.10+repack-1 ... 2.2.0+repack-4 (76 versions)——
Debian:13(1)
PackageVulnerable rangeFixed inDependents
hdf51.14.5+repack-3 ... 2.2.0+repack-4 (45 versions)——
Debian:14(1)
PackageVulnerable rangeFixed inDependents
hdf51.14.5+repack-3 ... 2.2.0+repack-4 (45 versions)——

Weakness Classification(1)

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

Data Freshness Timeline

(refreshed 24× in last 7d / 84× 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 127 total refreshes for this CVE.

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

Related CVEs(same vendor + same CWE)

Frequently asked(5)

What is CVE-2026-19025?
CVE-2026-19025 is a medium vulnerability published on August 5, 2026. H5Olayoutdecode in H5Olayout.c in HDF5 through 2.3.0 does not validate that a chunked dataset's stored chunk-layout dimensionality matches its dataspace rank when an existing dataset is opened, whereas this check is performed only at dataset-creation time. This allows attackers to cause a denial of…
When was CVE-2026-19025 disclosed?
CVE-2026-19025 was first published in the National Vulnerability Database on August 5, 2026, with the most recent update on August 31, 2026. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.
Is CVE-2026-19025 actively exploited?
CVE-2026-19025 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 0% probability of exploitation in the next 30 days, which ranks it in the top 98.1% of all scored CVEs.
What is the CVSS score of CVE-2026-19025?
CVE-2026-19025 has a CVSS v3 base score of 6.8 (NVD).
How do I remediate CVE-2026-19025?
Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2026-19025, EchelonGraph cross-links them in the Vendor Advisories panel below — those typically contain the canonical remediation steps, fixed version numbers, and any vendor-specific mitigations.

Dependency Blast Radius

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