CVE Explorer
CVE-2026-26199
HDF5 is a high-performance library and a file format specification that implements the HDF5 data model. If `H5Iget_name` is invoked on a group id with `0` for the size parameter, it will underflow when trying to place a null terminator in the buffer. This can occur if `H5Iget_name` is invoked in a way where `size` can be forced to zero, and there is important data before the `name` buffer.
Known exploited
Not asserted
Disputed
No
Stale source
No
Conflicts
0
Affected products and versions
1 source assertion{"product":"hdf5","vendor":"HDFGroup","versions":[{"status":"affected","version":"<= 1.14.6"}]}
- cve_program_cvelist_v5affectedurn:baitaphish:normalized-source-record:v2:86eb5db75b4fd1ed01f3cf9ef722ded1dcbc8355d9a0a9b8396280b70f37b836 · sha256:596308668c50a507… · /containers/cna/affected/0
Provider-owned CVSS observations
1 source assertion{"metric":{"attackComplexity":"HIGH","attackRequirements":"PRESENT","attackVector":"NETWORK","baseScore":5.9,"baseSeverity":"MEDIUM","privilegesRequired":"NONE","subAvailabilityImpact":"NONE","subConfidentialityImpact":"NONE","subIntegrityImpact":"NONE","userInteraction":"ACTIVE","vectorString":"CVSS:4.0/AV:N/AC:H/AT:P/PR:N/UI:A/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N","version":"4.0","vulnAvailabilityImpact":"HIGH","vulnConfidentialityImpact":"NONE","vulnIntegrityImpact":"NONE"},"metric_type":"cvssV4_0"}
- cve_program_cvelist_v5cvssurn:baitaphish:normalized-source-record:v2:86eb5db75b4fd1ed01f3cf9ef722ded1dcbc8355d9a0a9b8396280b70f37b836 · sha256:596308668c50a507… · /containers/cna/metrics/0/cvssV4_0
CWE assertions
1 source assertion{"cweId":"CWE-124","description":"CWE-124: Buffer Underwrite ('Buffer Underflow')","lang":"en","type":"CWE"}
- cve_program_cvelist_v5cweurn:baitaphish:normalized-source-record:v2:86eb5db75b4fd1ed01f3cf9ef722ded1dcbc8355d9a0a9b8396280b70f37b836 · sha256:596308668c50a507… · /containers/cna/problemTypes/0/descriptions/0
Source references
3 source assertions{"name":"https://github.com/HDFGroup/hdf5/blob/develop/src/H5Gname.c#L474","tags":["x_refsource_MISC"],"url":"https://github.com/HDFGroup/hdf5/blob/develop/src/H5Gname.c#L474"}
- cve_program_cvelist_v5referenceurn:baitaphish:normalized-source-record:v2:86eb5db75b4fd1ed01f3cf9ef722ded1dcbc8355d9a0a9b8396280b70f37b836 · sha256:596308668c50a507… · /containers/cna/references/1
{"tags":["exploit"],"url":"https://github.com/HDFGroup/hdf5/security/advisories/GHSA-5c6x-jmgf-f5vc"}
- cve_program_cvelist_v5referenceurn:baitaphish:normalized-source-record:v2:86eb5db75b4fd1ed01f3cf9ef722ded1dcbc8355d9a0a9b8396280b70f37b836 · sha256:596308668c50a507… · /containers/adp/0/references/0
{"name":"https://github.com/HDFGroup/hdf5/security/advisories/GHSA-5c6x-jmgf-f5vc","tags":["x_refsource_CONFIRM"],"url":"https://github.com/HDFGroup/hdf5/security/advisories/GHSA-5c6x-jmgf-f5vc"}
- cve_program_cvelist_v5referenceurn:baitaphish:normalized-source-record:v2:86eb5db75b4fd1ed01f3cf9ef722ded1dcbc8355d9a0a9b8396280b70f37b836 · sha256:596308668c50a507… · /containers/cna/references/0
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.