CVE-2026-17572

MEDIUMNVD 5.55.5—
EchelonGraph scoreMEDIUM confidence

Score 5.5 from GitHub Security Advisory published 2026-07-27. NVD baseline CVSS 5.5; sources differ by 0.0.

Triggered by: GitHub Security Advisory CVSS
Sources: epss, ghsa, nvd
Trending — 3 sources updated this week
5.5EG
EchelonGraph verdictMonitorLow exploitation likelihood right now — keep watching.
  • Lower severity and no public exploit yet
CISA-KEV: Not listedEPSS PROB: 0%CVSS: 5.5Exploit: None knownExposed: 0

No vendor fix yet — apply a workaround or compensating control (WAF / firewall / segmentation) and watch for a patch.

Heap-based buffer overflow in the SOHM list-index deserialization code in HDF5 through 2.1.1 on all platforms allows attackers to cause a denial of service (crash) via a crafted HDF5 file whose shared-message list index declares a num_messages count exceeding list_max, triggering out-of-bounds heap reads and writes in H5SM__cache_list_deserialize and H5SM__cache_list_verify_chksum.

CVSS v3
5.5
EG Score
5.5(medium)
EG Risk
25(Track)
EG Risk 25/100SSVC: 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
Severity55% × 45%
Exploitation0% × 40%
Automatability0% × 15%
Action: Routine — remediate on your standard cadence.
EPSS PROB
0%
EPSS %ILE
1%
KEV
Not listed

Published

July 27, 2026

Last Modified

August 18, 2026

Advisory Details (1)

Auto-updated Jul 27, 2026
No patch confirmed yet.
generic

SOHM list message count exceeds list_max · Issue #6501 · HDFGroup/hdf5 · GitHub

https://github.com/HDFGroup/hdf5/issues/6501

Vendor Advisories for CVE-2026-17572(1)

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

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 ... 2.1.0+repack-1~exp9 (72 versions)——
Debian:13(1)
PackageVulnerable rangeFixed inDependents
hdf51.14.5+repack-3 ... 2.1.0+repack-1~exp9 (41 versions)——
Debian:14(1)
PackageVulnerable rangeFixed inDependents
hdf51.14.5+repack-3 ... 2.1.0+repack-1~exp9 (41 versions)——

Weakness Classification(2)

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

Data Freshness Timeline

(refreshed 16× in last 7d / 78× 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. 2026-08-29 23:52 UTCEG score recompute
  2. 2026-08-29 23:52 UTCGHSA enrichment
  3. 2026-08-28 21:41 UTCEPSS rescore
  4. 2026-08-27 21:00 UTCEG score recompute
  5. 2026-08-27 21:00 UTCGHSA enrichment
  6. 2026-08-27 14:25 UTCEPSS rescore
  7. 2026-08-26 20:22 UTCEG score recompute
  8. 2026-08-26 20:21 UTCGHSA enrichment
  9. 2026-08-26 14:46 UTCEPSS rescore
  10. 2026-08-25 20:17 UTCEG score recompute
  11. 2026-08-25 20:17 UTCGHSA enrichment
  12. 2026-08-25 13:48 UTCEPSS rescore
  13. 2026-08-24 20:13 UTCEG score recompute
  14. 2026-08-24 20:13 UTCGHSA enrichment
  15. 2026-08-23 20:09 UTCEG score recompute
  16. 2026-08-23 20:09 UTCGHSA enrichment
  17. 2026-08-23 00:19 UTCEPSS rescore
  18. 2026-08-22 20:06 UTCEG score recompute
  19. 2026-08-22 20:06 UTCGHSA enrichment
  20. 2026-08-21 23:49 UTCEPSS rescore
  21. 2026-08-21 20:03 UTCEG score recompute
  22. 2026-08-21 20:03 UTCGHSA enrichment
  23. 2026-08-20 22:55 UTCEPSS rescore
  24. 2026-08-20 20:00 UTCGHSA enrichment
  25. 2026-08-19 19:57 UTCEG score recompute
Show 66 more
  1. 2026-08-19 19:57 UTCGHSA enrichment
  2. 2026-08-19 17:03 UTCEPSS rescore
  3. 2026-08-18 19:04 UTCEG score recompute
  4. 2026-08-18 19:04 UTCGHSA enrichment
  5. 2026-08-18 13:48 UTCEPSS rescore
  6. 2026-08-17 21:37 UTCGHSA enrichment
  7. 2026-08-16 21:34 UTCEG score recompute
  8. 2026-08-16 21:34 UTCGHSA enrichment
  9. 2026-08-16 14:56 UTCEPSS rescore
  10. 2026-08-16 02:14 UTCEPSS rescore
  11. 2026-08-15 21:31 UTCEG score recompute
  12. 2026-08-15 21:31 UTCGHSA enrichment
  13. 2026-08-15 01:30 UTCEPSS rescore
  14. 2026-08-14 21:27 UTCEG score recompute
  15. 2026-08-14 21:27 UTCGHSA enrichment
  16. 2026-08-13 22:00 UTCEPSS rescore
  17. 2026-08-13 21:24 UTCGHSA enrichment
  18. 2026-08-12 21:18 UTCEG score recompute
  19. 2026-08-12 21:18 UTCGHSA enrichment
  20. 2026-08-12 13:50 UTCEPSS rescore
  21. 2026-08-11 21:15 UTCEG score recompute
  22. 2026-08-11 21:15 UTCGHSA enrichment
  23. 2026-08-11 13:42 UTCEPSS rescore
  24. 2026-08-11 00:00 UTCEPSS rescore
  25. 2026-08-10 21:12 UTCGHSA enrichment
  26. 2026-08-09 21:09 UTCEG score recompute
  27. 2026-08-09 21:09 UTCGHSA enrichment
  28. 2026-08-09 13:46 UTCEPSS rescore
  29. 2026-08-08 21:06 UTCEG score recompute
  30. 2026-08-08 21:06 UTCGHSA enrichment
  31. 2026-08-08 16:37 UTCEPSS rescore
  32. 2026-08-07 21:03 UTCEG score recompute
  33. 2026-08-07 21:03 UTCGHSA enrichment
  34. 2026-08-06 21:00 UTCEG score recompute
  35. 2026-08-06 21:00 UTCGHSA enrichment
  36. 2026-08-06 13:46 UTCEPSS rescore
  37. 2026-08-05 20:57 UTCEG score recompute
  38. 2026-08-05 20:57 UTCGHSA enrichment
  39. 2026-08-05 19:17 UTCEPSS rescore
  40. 2026-08-04 20:54 UTCEG score recompute
  41. 2026-08-04 20:54 UTCGHSA enrichment
  42. 2026-08-04 15:10 UTCEPSS rescore
  43. 2026-08-04 10:38 UTCEPSS rescore
  44. 2026-08-03 20:33 UTCEG score recompute
  45. 2026-08-03 20:33 UTCGHSA enrichment
  46. 2026-08-03 10:35 UTCEPSS rescore
  47. 2026-08-02 20:30 UTCEG score recompute
  48. 2026-08-02 20:30 UTCGHSA enrichment
  49. 2026-08-02 02:26 UTCEPSS rescore
  50. 2026-08-01 20:27 UTCEG score recompute
  51. 2026-08-01 20:27 UTCGHSA enrichment
  52. 2026-08-01 04:15 UTCEPSS rescore
  53. 2026-07-31 20:24 UTCGHSA enrichment
  54. 2026-07-30 20:16 UTCEG score recompute
  55. 2026-07-30 20:16 UTCGHSA enrichment
  56. 2026-07-30 01:30 UTCEPSS rescore
  57. 2026-07-29 19:41 UTCGHSA enrichment
  58. 2026-07-28 19:35 UTCEG score recompute
  59. 2026-07-28 19:35 UTCGHSA enrichment
  60. 2026-07-27 19:31 UTCEG score recompute
  61. 2026-07-27 19:30 UTCGHSA enrichment
  62. 2026-07-27 19:06 UTCEG score recompute
  63. 2026-07-27 19:06 UTCGHSA enrichment
  64. 2026-07-27 16:24 UTCEG score recompute
  65. 2026-07-27 15:31 UTCEG score recompute
  66. 2026-07-27 15:30 UTCMITRE cvelistV5first tracked

Frequently asked(5)

What is CVE-2026-17572?
CVE-2026-17572 is a medium vulnerability published on July 27, 2026. Heap-based buffer overflow in the SOHM list-index deserialization code in HDF5 through 2.1.1 on all platforms allows attackers to cause a denial of service (crash) via a crafted HDF5 file whose shared-message list index declares a nummessages count exceeding listmax, triggering out-of-bounds heap…
When was CVE-2026-17572 disclosed?
CVE-2026-17572 was first published in the National Vulnerability Database on July 27, 2026, with the most recent update on August 18, 2026. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.
Is CVE-2026-17572 actively exploited?
CVE-2026-17572 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 99.0% of all scored CVEs.
What is the CVSS score of CVE-2026-17572?
CVE-2026-17572 has a CVSS v3 base score of 5.5 (NVD).
How do I remediate CVE-2026-17572?
Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2026-17572, 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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