{"dataType":"CVE_RECORD","dataVersion":"5.2","cveMetadata":{"cveId":"CVE-2026-92627","assignerOrgId":"0253b833-3e77-4dfe-9d57-17db1a2f0a74","state":"PUBLISHED","assignerShortName":"HDFG","dateReserved":"2026-09-16T15:14:38.985Z","datePublished":"2026-09-16T15:16:54.160Z","dateUpdated":"2026-09-17T17:36:14.708Z"},"containers":{"cna":{"providerMetadata":{"orgId":"0253b833-3e77-4dfe-9d57-17db1a2f0a74","shortName":"HDFG","dateUpdated":"2026-09-16T15:58:14.633Z"},"title":"Heap Use-After-Free in H5T__conv_f_f","problemTypes":[{"descriptions":[{"lang":"en","cweId":"CWE-416","description":"CWE-416 Use after free","type":"CWE"}]}],"affected":[{"vendor":"The HDF Group","product":"HDF5","modules":["src/H5Tconv.c"],"versions":[{"status":"affected","version":"< 1.14.2"}],"defaultStatus":"unaffected"}],"descriptions":[{"lang":"en","value":"A heap-use-after-free vulnerability exists in H5T__conv_f_f() in src/H5Tconv.c in HDF5 before 1.14.2. When converting a compound datatype containing floating-point members during a dataset read, a temporary buffer allocated with calloc() is freed and subsequently read from within the same conversion routine. An attacker who can supply a crafted HDF5 file containing a specially constructed compound datatype can trigger the use-after-free when the file is parsed by an application that reads the affected dataset, such as h5dump. This can result in a crash and, depending on heap layout and allocator behavior, may be exploitable for further memory corruption up to remote code execution.","supportingMedia":[{"type":"text/html","base64":false,"value":"<p>A heap-use-after-free vulnerability exists in <code>H5T__conv_f_f()</code> in <code>src/H5Tconv.c</code> in HDF5 before 1.14.2.&nbsp;<span>When converting a compound datatype containing floating-point members during a dataset read</span><span>, a temporary buffer allocated with </span><code>calloc()</code><span> is freed and subsequently read from within the same conversion routine. An attacker who can supply a crafted HDF5 </span><span>file containing a specially constructed compound datatype can trigger the use-after-free when the file is parsed by an application that reads the affected dataset, such as </span><code>h5dump</code><span>.&nbsp;</span><span>This can result in a crash and, depending on heap layout and allocator behavior, may be exploitable for further memory corruption up to remote code execution.</span></p>"}]}],"references":[{"url":"https://pulsesecurity.co.nz/advisories/hdf5-memory-corruption"}],"metrics":[{"format":"CVSS","scenarios":[{"lang":"en","value":"GENERAL"}],"cvssV4_0":{"attackVector":"LOCAL","attackComplexity":"LOW","attackRequirements":"NONE","privilegesRequired":"NONE","userInteraction":"ACTIVE","vulnConfidentialityImpact":"LOW","subConfidentialityImpact":"NONE","vulnIntegrityImpact":"NONE","subIntegrityImpact":"NONE","vulnAvailabilityImpact":"LOW","subAvailabilityImpact":"NONE","exploitMaturity":"NOT_DEFINED","Safety":"NOT_DEFINED","Automatable":"NOT_DEFINED","Recovery":"NOT_DEFINED","valueDensity":"NOT_DEFINED","vulnerabilityResponseEffort":"NOT_DEFINED","providerUrgency":"NOT_DEFINED","version":"4.0","baseSeverity":"MEDIUM","baseScore":4.6,"vectorString":"CVSS:4.0/AV:L/AC:L/AT:N/PR:N/UI:A/VC:L/VI:N/VA:L/SC:N/SI:N/SA:N"}}],"credits":[{"lang":"en","value":"Denis Andzakovic","type":"reporter"}],"source":{"discovery":"UNKNOWN"},"x_generator":{"engine":"Vulnogram 1.0.5"}},"adp":[{"metrics":[{"other":{"type":"ssvc","content":{"timestamp":"2026-09-17T17:36:04.378638Z","id":"CVE-2026-92627","options":[{"Exploitation":"none"},{"Automatable":"no"},{"Technical Impact":"partial"}],"role":"CISA Coordinator","version":"2.0.3"}}}],"title":"CISA ADP Vulnrichment","providerMetadata":{"orgId":"134c704f-9b21-4f2e-91b3-4a467353bcc0","shortName":"CISA-ADP","dateUpdated":"2026-09-17T17:36:14.708Z"}}]}}