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    "cveMetadata": {
        "cveId": "CVE-2026-19025",
        "assignerOrgId": "0253b833-3e77-4dfe-9d57-17db1a2f0a74",
        "state": "PUBLISHED",
        "assignerShortName": "HDFG",
        "dateReserved": "2026-08-05T22:14:38.816Z",
        "datePublished": "2026-08-05T22:35:11.510Z",
        "dateUpdated": "2026-08-06T14:34:46.492Z"
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                "shortName": "HDFG",
                "dateUpdated": "2026-08-05T22:35:11.510Z"
            },
            "title": "HDF5 divide-by-zero (SIGFPE) via mismatched chunk-layout dimensionality and dataspace rank on dataset open",
            "problemTypes": [
                {
                    "descriptions": [
                        {
                            "lang": "en",
                            "cweId": "CWE-369",
                            "description": "CWE-369 Divide by zero",
                            "type": "CWE"
                        }
                    ]
                }
            ],
            "impacts": [
                {
                    "capecId": "CAPEC-165",
                    "descriptions": [
                        {
                            "lang": "en",
                            "value": "CAPEC-165 File Manipulation"
                        }
                    ]
                }
            ],
            "affected": [
                {
                    "vendor": "The HDF Group",
                    "product": "HDF5",
                    "versions": [
                        {
                            "status": "affected",
                            "version": "<= 2.3.0"
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                    "lang": "en",
                    "value": "H5O__layout_decode in H5Olayout.c in HDF5 through 2.3.0 does not validate that a chunked dataset's stored chunk-layout dimensionality matches its dataspace rank when an existing dataset is opened, whereas this check is performed only at dataset-creation time. This allows attackers to cause a denial of service (divide-by-zero and application crash in H5S__hyper_iter_get_seq_list in src/H5Shyper.c) via a crafted HDF5 file with mismatched chunk/dataspace ranks that is opened and read via H5Dopen2 and H5Dread, e.g. by the h5repack tool.",
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                        }
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            ],
            "references": [
                {
                    "url": "https://github.com/HDFGroup/hdf5/issues/6491"
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                        "attackVector": "LOCAL",
                        "attackComplexity": "LOW",
                        "attackRequirements": "NONE",
                        "privilegesRequired": "NONE",
                        "userInteraction": "PASSIVE",
                        "vulnConfidentialityImpact": "NONE",
                        "subConfidentialityImpact": "NONE",
                        "vulnIntegrityImpact": "NONE",
                        "subIntegrityImpact": "NONE",
                        "vulnAvailabilityImpact": "HIGH",
                        "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": 6.8,
                        "vectorString": "CVSS:4.0/AV:L/AC:L/AT:N/PR:N/UI:P/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N"
                    }
                }
            ],
            "source": {
                "discovery": "UNKNOWN"
            },
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            {
                "references": [
                    {
                        "url": "https://github.com/HDFGroup/hdf5/issues/6491",
                        "tags": [
                            "exploit"
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                ],
                "metrics": [
                    {
                        "other": {
                            "type": "ssvc",
                            "content": {
                                "timestamp": "2026-08-06T14:34:22.854081Z",
                                "id": "CVE-2026-19025",
                                "options": [
                                    {
                                        "Exploitation": "poc"
                                    },
                                    {
                                        "Automatable": "no"
                                    },
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                                        "Technical Impact": "partial"
                                    }
                                ],
                                "role": "CISA Coordinator",
                                "version": "2.0.3"
                            }
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                ],
                "title": "CISA ADP Vulnrichment",
                "providerMetadata": {
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                    "shortName": "CISA-ADP",
                    "dateUpdated": "2026-08-06T14:34:46.492Z"
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