{ "dataType": "CVE_RECORD", "dataVersion": "5.2", "cveMetadata": { "cveId": "CVE-2026-34734", "assignerOrgId": "a0819718-46f1-4df5-94e2-005712e83aaa", "state": "PUBLISHED", "assignerShortName": "GitHub_M", "dateReserved": "2026-03-30T18:41:20.754Z", "datePublished": "2026-04-09T19:01:21.794Z", "dateUpdated": "2026-07-15T01:04:04.102Z" }, "containers": { "cna": { "title": "HDF5: H5T__conv_struct Use After Free", "problemTypes": [ { "descriptions": [ { "cweId": "CWE-416", "lang": "en", "description": "CWE-416: Use After Free", "type": "CWE" } ] } ], "metrics": [ { "cvssV3_1": { "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" } } ], "references": [ { "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" } ], "affected": [ { "vendor": "HDFGroup", "product": "hdf5", "versions": [ { "version": "<= 1.14.1-2", "status": "affected" } ] } ], "providerMetadata": { "orgId": "a0819718-46f1-4df5-94e2-005712e83aaa", "shortName": "GitHub_M", "dateUpdated": "2026-04-09T19:01:21.794Z" }, "descriptions": [ { "lang": "en", "value": "HDF5 is software for managing data. In 1.14.1-2 and earlier, a heap-use-after-free was found in the h5dump helper utility. An attacker who can supply a malicious h5 file can trigger a heap use-after-free. The freed object is referenced in a memmove call from H5T__conv_struct. The original object was allocated by H5D__typeinfo_init_phase3 and freed by H5D__typeinfo_term." } ], "source": { "advisory": "GHSA-w7v2-9cmr-pwwj", "discovery": "UNKNOWN" } }, "adp": [ { "references": [ { "url": "https://github.com/HDFGroup/hdf5/security/advisories/GHSA-w7v2-9cmr-pwwj", "tags": [ "exploit" ] } ], "metrics": [ { "other": { "type": "ssvc", "content": { "timestamp": "2026-04-13T20:47:34.523913Z", "id": "CVE-2026-34734", "options": [ { "Exploitation": "poc" }, { "Automatable": "no" }, { "Technical Impact": "total" } ], "role": "CISA Coordinator", "version": "2.0.3" } } } ], "title": "CISA ADP Vulnrichment", "providerMetadata": { "orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "shortName": "CISA-ADP", "dateUpdated": "2026-04-13T20:47:37.724Z" } }, { "affected": [ { "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" } ], "datePublic": "2026-04-09T19:01:21.794Z", "descriptions": [ { "lang": "en", "value": "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." } ], "metrics": [ { "other": { "content": { "namespace": "https://access.redhat.com/security/updates/classification/", "value": "Important" }, "type": "Red Hat severity rating" } }, { "cvssV3_1": { "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" }, "format": "CVSS" } ], "problemTypes": [ { "descriptions": [ { "cweId": "CWE-825", "description": "Expired Pointer Dereference", "lang": "en", "type": "CWE" } ] } ], "references": [ { "tags": [ "vdb-entry", "x_refsource_REDHAT" ], "url": "https://access.redhat.com/security/cve/CVE-2026-34734" }, { "name": "RHBZ#2457034", "tags": [ "issue-tracking", "x_refsource_REDHAT" ], "url": "https://bugzilla.redhat.com/show_bug.cgi?id=2457034" }, { "tags": [ "x_sadp-csaf-vex" ], "url": "https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-34734.json" } ], "timeline": [ { "lang": "en", "time": "2026-04-09T20:01:51.970Z", "value": "Reported to Red Hat." }, { "lang": "en", "time": "2026-04-09T19:01:21.794Z", "value": "Made public." } ], "title": "hdf5: h5dump: HDF5 h5dump: Arbitrary code execution via a crafted HDF5 file", "workarounds": [ { "lang": "en", "value": "Mitigation for this issue is either not available or the currently available options do not meet the Red Hat Product Security criteria comprising ease of use and deployment, applicability to widespread installation base or stability." } ], "x_adpType": "supplier", "x_generator": { "engine": "sadp-cli 1.0.0" }, "providerMetadata": { "orgId": "0b0ca135-0b70-47e7-9f44-1890c2a1c46c", "shortName": "redhat-SADP", "dateUpdated": "2026-07-15T01:04:04.102Z" } } ] } }