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: 0.2% (5th 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
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: 0.2%CVSS: 6.8Exploit: Elevated riskExposed services: Not assessed

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
6.8MEDIUMmedium confidence
EG Risk
47
EG Risk 47/100CISA 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
Severity68% × 45%
Exploitation40% × 40%
Automatability0% × 15%
CISA SSVC: Track at low or medium mission impact; Track* at high (mission-essential systems).
Action: A fix is available. Apply it within your standard update timelines.
EPSS PROB
0.2%
EPSS %ILE
5th
KEV
Not listed

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

A fix is available. Apply it within your standard update timelines.

Exploitation public PoC (CISA Vulnrichment) · Automatable no (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 5, 2026

Last Modified

August 31, 2026

Advisory Details (1)

Auto-updated Aug 5, 2026
Patch available.
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 / EcosystemFix (by version range) / 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 rangeFix by version rangeDependents
hdf51.10.10+repack-1 ... 2.1.0+repack-1~exp9 (83 versions)
  • every version on: no fix on record
—
Debian:12(1)
PackageVulnerable rangeFix by version rangeDependents
hdf51.10.10+repack-1 ... 2.2.0+repack-5 (77 versions)
  • every version on: no fix on record
—
Debian:13(1)
PackageVulnerable rangeFix by version rangeDependents
hdf51.14.5+repack-3 ... 2.2.0+repack-5 (46 versions)
  • every version on: no fix on record
—
Debian:14(1)
PackageVulnerable rangeFix by version rangeDependents
hdf51.14.5+repack-3 ... 2.2.0+repack-5 (46 versions)
  • every version on: no fix on record
—

Weakness Classification(1)

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

Data Freshness Timeline

(refreshed 16× in last 7d / 87× 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 166 total refreshes for this CVE.

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

Related CVEs(same product + 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 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 0.2% probability of exploitation in the next 30 days (5th percentile of EPSS-scored CVEs).
What is the CVSS score of CVE-2026-19025?
CVE-2026-19025 has a CVSS base score of 6.8 (a secondary CVSS source that NVD displays; NVD's own analysis pending).
How do I remediate CVE-2026-19025?
A fix for CVE-2026-19025 is available: update to the fixed version the vendor names in its advisory. The vendor advisories EchelonGraph has for CVE-2026-19025 are linked in the Vendor Advisories panel on this page.

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