{"id":"CVE-2026-29043","state":"PUBLISHED","title":"HDF5 H5T__ref_mem_setnull Heap Buffer Overflow","description":"HDF5 is software for managing data. In 1.14.1-2 and earlier, an attacker who can control an h5 file parsed by HDF5 can trigger a write-based heap buffer overflow condition in the H5T__ref_mem_setnull method. This can lead to a denial-of-service condition, and potentially further issues such as remote code execution depending on the practical exploitability of the heap overflow against modern operating systems.","publishedAt":"2026-04-10T15:35:51.682Z","updatedAt":"2026-04-14T14:50:46.566Z","severity":{"score":5.5,"label":"Medium","version":"3.1","vector":"CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H","source":"GitHub_M"},"assigner":"GitHub_M","products":["HDFGroup hdf5"],"affected":[{"vendor":"HDFGroup","product":"hdf5","versions":[{"version":"<= 1.14.1-2","status":"affected"}]}],"references":["https://github.com/HDFGroup/hdf5/security/advisories/GHSA-qm2m-5g5w-2277"],"weaknesses":["CWE-122"],"ingestedAt":"2026-10-29T20:11:31.369Z","source":{"repository":"CVEProject/cvelistV5","path":"cves/2026/29xxx/CVE-2026-29043.json","commit":"556c9d3a8cd17e218bb8e452ba7cd619a384ff47"},"raw":{"dataType":"CVE_RECORD","dataVersion":"5.2","cveMetadata":{"cveId":"CVE-2026-29043","state":"PUBLISHED","datePublished":"2026-04-10T15:35:51.682Z","dateUpdated":"2026-04-14T14:50:46.566Z","assignerShortName":"GitHub_M","assignerOrgId":"a0819718-46f1-4df5-94e2-005712e83aaa","dateReserved":"2026-03-03T17:50:11.242Z"},"containers":{"cna":{"title":"HDF5 H5T__ref_mem_setnull Heap Buffer Overflow","descriptions":[{"lang":"en","value":"HDF5 is software for managing data. In 1.14.1-2 and earlier, an attacker who can control an h5 file parsed by HDF5 can trigger a write-based heap buffer overflow condition in the H5T__ref_mem_setnull method. This can lead to a denial-of-service condition, and potentially further issues such as remote code execution depending on the practical exploitability of the heap overflow against modern operating systems."}],"affected":[{"vendor":"HDFGroup","product":"hdf5","versions":[{"version":"<= 1.14.1-2","status":"affected"}]}],"references":[{"url":"https://github.com/HDFGroup/hdf5/security/advisories/GHSA-qm2m-5g5w-2277","name":"https://github.com/HDFGroup/hdf5/security/advisories/GHSA-qm2m-5g5w-2277","tags":["x_refsource_CONFIRM"]}],"metrics":[{"cvssV3_1":{"attackComplexity":"LOW","attackVector":"LOCAL","availabilityImpact":"HIGH","baseScore":5.5,"baseSeverity":"MEDIUM","confidentialityImpact":"NONE","integrityImpact":"NONE","privilegesRequired":"NONE","scope":"UNCHANGED","userInteraction":"REQUIRED","vectorString":"CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H","version":"3.1"}}],"problemTypes":[{"descriptions":[{"cweId":"CWE-122","lang":"en","description":"CWE-122: Heap-based Buffer Overflow","type":"CWE"}]}],"providerMetadata":{"shortName":"GitHub_M","orgId":"a0819718-46f1-4df5-94e2-005712e83aaa","dateUpdated":"2026-04-10T15:35:51.682Z"},"source":{"advisory":"GHSA-qm2m-5g5w-2277","discovery":"UNKNOWN"}},"adp":[{"title":"CISA ADP Vulnrichment","metrics":[{"other":{"type":"ssvc","content":{"timestamp":"2026-04-14T14:50:10.348494Z","id":"CVE-2026-29043","options":[{"Exploitation":"poc"},{"Automatable":"no"},{"Technical Impact":"partial"}],"role":"CISA Coordinator","version":"2.0.3"}}}],"providerMetadata":{"shortName":"CISA-ADP","orgId":"134c704f-9b21-4f2e-91b3-4a467353bcc0","dateUpdated":"2026-04-14T14:50:46.566Z"}}]}}}