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CVE-2026-34734

A flaw was found in the HDF5 software, specifically in the h5dump helper utility. An attacker can exploit this vulnerability by providing a specially crafted HDF5 file, leading to a heap-use-after-free condition. This flaw can result in arbitrary code execution, allowing the attacker to take control of the affected system, or cause a denial of service.
Lifecycle PUBLISHED1 preserved revisionFact urn:baitaphish:canonical-cve-fact-revision:v2:0c7dceb7b915156389308c7bc6838d3d80d8b3ec100fa34827a9fd7eb1cb7c85
Known exploited
Not asserted
Disputed
No
Stale source
No
Conflicts
2

Preserved source conflicts

No provider value was silently selected as the winner.

affected · 2 assertions

{"collectionURL":"https://access.redhat.com/downloads/content/package-browser/","cpes":["cpe:/a:redhat:enterprise_linux_ai:3"],"defaultStatus":"affected","packageName":"hdf5","product":"Red Hat Enterprise Linux AI (RHEL AI) 3","vendor":"Red Hat"}

  • cve_program_cvelist_v5affected
    urn:baitaphish:normalized-source-record:v2:97a85994dfd3ebf015bbc2509756483502884511803ba598eafe140745d623c0 · sha256:06ad6b74ad4efade… · /containers/adp/1/affected/0

{"product":"hdf5","vendor":"HDFGroup","versions":[{"status":"affected","version":"<= 1.14.1-2"}]}

  • cve_program_cvelist_v5affected
    urn:baitaphish:normalized-source-record:v2:97a85994dfd3ebf015bbc2509756483502884511803ba598eafe140745d623c0 · sha256:06ad6b74ad4efade… · /containers/cna/affected/0
cwe · 2 assertions

{"cweId":"CWE-416","description":"CWE-416: Use After Free","lang":"en","type":"CWE"}

  • cve_program_cvelist_v5cwe
    urn:baitaphish:normalized-source-record:v2:97a85994dfd3ebf015bbc2509756483502884511803ba598eafe140745d623c0 · sha256:06ad6b74ad4efade… · /containers/cna/problemTypes/0/descriptions/0

{"cweId":"CWE-825","description":"Expired Pointer Dereference","lang":"en","type":"CWE"}

  • cve_program_cvelist_v5cwe
    urn:baitaphish:normalized-source-record:v2:97a85994dfd3ebf015bbc2509756483502884511803ba598eafe140745d623c0 · sha256:06ad6b74ad4efade… · /containers/adp/1/problemTypes/0/descriptions/0

Affected products and versions

2 source assertions
{"collectionURL":"https://access.redhat.com/downloads/content/package-browser/","cpes":["cpe:/a:redhat:enterprise_linux_ai:3"],"defaultStatus":"affected","packageName":"hdf5","product":"Red Hat Enterprise Linux AI (RHEL AI) 3","vendor":"Red Hat"}
  • cve_program_cvelist_v5affected
    urn:baitaphish:normalized-source-record:v2:97a85994dfd3ebf015bbc2509756483502884511803ba598eafe140745d623c0 · sha256:06ad6b74ad4efade… · /containers/adp/1/affected/0
{"product":"hdf5","vendor":"HDFGroup","versions":[{"status":"affected","version":"<= 1.14.1-2"}]}
  • cve_program_cvelist_v5affected
    urn:baitaphish:normalized-source-record:v2:97a85994dfd3ebf015bbc2509756483502884511803ba598eafe140745d623c0 · sha256:06ad6b74ad4efade… · /containers/cna/affected/0

Provider-owned CVSS observations

2 source assertions
{"metric":{"attackComplexity":"LOW","attackVector":"LOCAL","availabilityImpact":"HIGH","baseScore":7.8,"baseSeverity":"HIGH","confidentialityImpact":"HIGH","integrityImpact":"HIGH","privilegesRequired":"NONE","scope":"UNCHANGED","userInteraction":"REQUIRED","vectorString":"CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H","version":"3.1"},"metric_type":"cvssV3_1"}
  • cve_program_cvelist_v5cvss
    urn:baitaphish:normalized-source-record:v2:97a85994dfd3ebf015bbc2509756483502884511803ba598eafe140745d623c0 · sha256:06ad6b74ad4efade… · /containers/adp/1/metrics/1/cvssV3_1
{"metric":{"attackComplexity":"LOW","attackVector":"LOCAL","availabilityImpact":"HIGH","baseScore":7.8,"baseSeverity":"HIGH","confidentialityImpact":"HIGH","integrityImpact":"HIGH","privilegesRequired":"NONE","scope":"UNCHANGED","userInteraction":"REQUIRED","vectorString":"CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H","version":"3.1"},"metric_type":"cvssV3_1"}
  • cve_program_cvelist_v5cvss
    urn:baitaphish:normalized-source-record:v2:97a85994dfd3ebf015bbc2509756483502884511803ba598eafe140745d623c0 · sha256:06ad6b74ad4efade… · /containers/cna/metrics/0/cvssV3_1

CWE assertions

2 source assertions
{"cweId":"CWE-416","description":"CWE-416: Use After Free","lang":"en","type":"CWE"}
  • cve_program_cvelist_v5cwe
    urn:baitaphish:normalized-source-record:v2:97a85994dfd3ebf015bbc2509756483502884511803ba598eafe140745d623c0 · sha256:06ad6b74ad4efade… · /containers/cna/problemTypes/0/descriptions/0
{"cweId":"CWE-825","description":"Expired Pointer Dereference","lang":"en","type":"CWE"}
  • cve_program_cvelist_v5cwe
    urn:baitaphish:normalized-source-record:v2:97a85994dfd3ebf015bbc2509756483502884511803ba598eafe140745d623c0 · sha256:06ad6b74ad4efade… · /containers/adp/1/problemTypes/0/descriptions/0

Source references

5 source assertions
{"tags":["vdb-entry","x_refsource_REDHAT"],"url":"https://access.redhat.com/security/cve/CVE-2026-34734"}
  • cve_program_cvelist_v5reference
    urn:baitaphish:normalized-source-record:v2:97a85994dfd3ebf015bbc2509756483502884511803ba598eafe140745d623c0 · sha256:06ad6b74ad4efade… · /containers/adp/1/references/0
{"name":"RHBZ#2457034","tags":["issue-tracking","x_refsource_REDHAT"],"url":"https://bugzilla.redhat.com/show_bug.cgi?id=2457034"}
  • cve_program_cvelist_v5reference
    urn:baitaphish:normalized-source-record:v2:97a85994dfd3ebf015bbc2509756483502884511803ba598eafe140745d623c0 · sha256:06ad6b74ad4efade… · /containers/adp/1/references/1
{"tags":["exploit"],"url":"https://github.com/HDFGroup/hdf5/security/advisories/GHSA-w7v2-9cmr-pwwj"}
  • cve_program_cvelist_v5reference
    urn:baitaphish:normalized-source-record:v2:97a85994dfd3ebf015bbc2509756483502884511803ba598eafe140745d623c0 · sha256:06ad6b74ad4efade… · /containers/adp/0/references/0
{"name":"https://github.com/HDFGroup/hdf5/security/advisories/GHSA-w7v2-9cmr-pwwj","tags":["x_refsource_CONFIRM"],"url":"https://github.com/HDFGroup/hdf5/security/advisories/GHSA-w7v2-9cmr-pwwj"}
  • cve_program_cvelist_v5reference
    urn:baitaphish:normalized-source-record:v2:97a85994dfd3ebf015bbc2509756483502884511803ba598eafe140745d623c0 · sha256:06ad6b74ad4efade… · /containers/cna/references/0
{"tags":["x_sadp-csaf-vex"],"url":"https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-34734.json"}
  • cve_program_cvelist_v5reference
    urn:baitaphish:normalized-source-record:v2:97a85994dfd3ebf015bbc2509756483502884511803ba598eafe140745d623c0 · sha256:06ad6b74ad4efade… · /containers/adp/1/references/2

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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