Search/CVE-2026-26199
● CVE — Medium

CVE-2026-26199

VendorhdfgroupProducthdf5DiscoveredJul 20, 2026UpdatedOct 24, 2026

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.

CVSS v3.1
6.5 MEDIUM
EPSS
0.35%
probability of exploitation in 30 days
CISA KEV
Not listed
no confirmed exploitation reported
News coverage
0
sources referencing this CVE
Related IOCs
0
seen in the same coverage
Intelligence Reports1
1 intelligence report available

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EPSS Trend
Aug 16, 2026 → Sep 25, 2026
▲ 0.09pp
0.26% → 0.35% over 3 tracked changes
CVSS v3.1 Detail
Attack VectorNETWORK
Attack ComplexityLOW
Privileges RequiredNONE
User InteractionNONE
ScopeUNCHANGED
ConfidentialityNONE
IntegrityLOW
AvailabilityLOW
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:L
Connections
2 relationships
Timeline
disclosure → media coverage
Jul 20, 2026
Disclosure — published as a CVE record. · last revised by NVD Oct 24, 2026