CVE WatchOct 6, 2026

CVE-2026-19029

A heap-based buffer over-read in H5Z__filter_scaleoffset() in src/H5Zscaleoffset.c in HDF5 through 2.2.0 lets an attacker cause a denial of

CVSS

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No CVSS

EPSS

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KEV

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Exploit Today

0-100

Published: Oct 6, 2026 · Last modified: Oct 6, 2026 · CWE-125

EPSS · 30d

Not enough EPSS history yet.

Technical description

A heap-based buffer over-read in H5Z__filter_scaleoffset() in src/H5Zscaleoffset.c in HDF5 through 2.2.0 lets an attacker cause a denial of service (application crash) with a crafted HDF5 file. When the stored minimum bits equal the full precision of the datatype, the decoder copies d_nelmts * size bytes from the compressed chunk without checking that the chunk holds that many bytes. Both values come from attacker-controlled scale-offset filter parameters in the dataset's filter pipeline message.

Official references

github.comhttps://github.com/HDFGroup/hdf5/pull/6718

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