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CVE-2026-17572

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.
Lifecycle PUBLISHED1 preserved revisionFact urn:baitaphish:canonical-cve-fact-revision:v2:ebf4c5104f8cf7f478e3d9e6139c57a2971005ff43cbccf18f079205c8adbff2
Known exploited
Not asserted
Disputed
No
Stale source
No
Conflicts
1

Preserved source conflicts

No provider value was silently selected as the winner.

cwe · 2 assertions

{"cweId":"CWE-787","description":"CWE-787 Out-of-bounds write","lang":"en","type":"CWE"}

  • cve_program_cvelist_v5cwe
    urn:baitaphish:normalized-source-record:v2:947c19b797e715b2de24f877f5777cb92ca72b2a74fe3a3eb47583878ccbc4d1 · sha256:d9a40d063c3b40aa… · /containers/cna/problemTypes/1/descriptions/0

{"cweId":"CWE-125","description":"CWE-125 Out-of-bounds read","lang":"en","type":"CWE"}

  • cve_program_cvelist_v5cwe
    urn:baitaphish:normalized-source-record:v2:947c19b797e715b2de24f877f5777cb92ca72b2a74fe3a3eb47583878ccbc4d1 · sha256:d9a40d063c3b40aa… · /containers/cna/problemTypes/0/descriptions/0

Affected products and versions

1 source assertion
{"defaultStatus":"unaffected","modules":["Shared Object Header Message List"],"product":"HDF5","vendor":"The HDF Group","versions":[{"status":"affected","version":"<= 2.1.1","versionType":"custom"}]}
  • cve_program_cvelist_v5affected
    urn:baitaphish:normalized-source-record:v2:947c19b797e715b2de24f877f5777cb92ca72b2a74fe3a3eb47583878ccbc4d1 · sha256:d9a40d063c3b40aa… · /containers/cna/affected/0

Provider-owned CVSS observations

1 source assertion
{"metric":{"Automatable":"NOT_DEFINED","Recovery":"NOT_DEFINED","Safety":"NOT_DEFINED","attackComplexity":"LOW","attackRequirements":"NONE","attackVector":"LOCAL","baseScore":5.5,"baseSeverity":"MEDIUM","exploitMaturity":"UNREPORTED","privilegesRequired":"NONE","providerUrgency":"NOT_DEFINED","subAvailabilityImpact":"HIGH","subConfidentialityImpact":"NONE","subIntegrityImpact":"LOW","userInteraction":"ACTIVE","valueDensity":"NOT_DEFINED","vectorString":"CVSS:4.0/AV:L/AC:L/AT:N/PR:N/UI:A/VC:N/VI:L/VA:H/SC:N/SI:L/SA:H/E:U","version":"4.0","vulnAvailabilityImpact":"HIGH","vulnConfidentialityImpac…
  • cve_program_cvelist_v5cvss
    urn:baitaphish:normalized-source-record:v2:947c19b797e715b2de24f877f5777cb92ca72b2a74fe3a3eb47583878ccbc4d1 · sha256:d9a40d063c3b40aa… · /containers/cna/metrics/0/cvssV4_0

CWE assertions

2 source assertions
{"cweId":"CWE-787","description":"CWE-787 Out-of-bounds write","lang":"en","type":"CWE"}
  • cve_program_cvelist_v5cwe
    urn:baitaphish:normalized-source-record:v2:947c19b797e715b2de24f877f5777cb92ca72b2a74fe3a3eb47583878ccbc4d1 · sha256:d9a40d063c3b40aa… · /containers/cna/problemTypes/1/descriptions/0
{"cweId":"CWE-125","description":"CWE-125 Out-of-bounds read","lang":"en","type":"CWE"}
  • cve_program_cvelist_v5cwe
    urn:baitaphish:normalized-source-record:v2:947c19b797e715b2de24f877f5777cb92ca72b2a74fe3a3eb47583878ccbc4d1 · sha256:d9a40d063c3b40aa… · /containers/cna/problemTypes/0/descriptions/0

Source references

1 source assertion
{"url":"https://github.com/HDFGroup/hdf5/issues/6501"}
  • cve_program_cvelist_v5reference
    urn:baitaphish:normalized-source-record:v2:947c19b797e715b2de24f877f5777cb92ca72b2a74fe3a3eb47583878ccbc4d1 · sha256:d9a40d063c3b40aa… · /containers/cna/references/0

Attribution and limitations

  • CVE Program CVEList V5: Reproduce the MITRE copyright designation and CVE license in copies. Source →

Provider severity values are preserved separately. Baitaphish does not convert them into a risk rating, infer affected products, or treat EPSS as observed exploitation.

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