CVE-2026-19026

H5Zfilternbit in H5Znbit.c in HDF5 through 2.3.0 dereferences cdvalues0 through cdvalues4 without validating that cdvalues is non-NULL or that cdnelmts is at least 5, the fixed size of the filter's header. This allows attackers to cause a denial of service via a crafted HDF5 file that stores the...

CVE-2026-19024

NULL pointer dereference in H5Pgetfillvalue in HDF5 before 2.3.0 allows attackers to cause a denial of service via a dataset whose version 1 or 2 fill value message has the "defined" flag set together with a negative size field, which is not normalized to the library's "undefined" sentinel and...

DEBIAN-CVE-2026-19024

NULL pointer dereference in H5Pgetfillvalue in HDF5 before 2.3.0 allows attackers to cause a denial of service via a dataset whose version 1 or 2 fill value message has the "defined" flag set together with a negative size field, which is not normalized to the library's "undefined" sentinel and...

CVE-2026-19023

Untrusted pointer dereference in the renderbinoutput function in the h5dump tool in HDF5 before 2.3.0 allows attackers to cause a denial of service via a variable-length string dataset with more than one element dumped in binary mode, which corrupts the per-element stride calculation and causes...

UBUNTU-CVE-2026-19023

Untrusted pointer dereference in the renderbinoutput function in the h5dump tool in HDF5 before 2.3.0 allows attackers to cause a denial of service via a variable-length string dataset with more than one element dumped in binary mode, which corrupts the per-element stride calculation and causes...

UBUNTU-CVE-2026-19024

NULL pointer dereference in H5Pgetfillvalue in HDF5 before 2.3.0 allows attackers to cause a denial of service via a dataset whose version 1 or 2 fill value message has the "defined" flag set together with a negative size field, which is not normalized to the library's "undefined" sentinel and...

CVE-2026-19026

The CVE-2026-19026 issue affects HDF5 up to v2.3.0, specifically H5Z__filter_nbit in H5Znbit.c. The code dereferences cd_values[0] through cd_values[4] without verifying that cd_values is non-NULL or that cd_nelmts >= 5, exploiting the fixed size of the filter header. This can cause a denial o...

CVE-2026-19024

CVE-2026-19024 affects HDF5’s H5Pget_fill_value and causes a NULL pointer dereference in versions before 2.1.1. If a dataset uses a version 1 or 2 fill value message with the defined flag and a negative size, the value can reach H5T_path_find with a NULL datatype, leading to a denial of service. ...

CVE-2026-19024

NULL pointer dereference in H5Pgetfillvalue in HDF5 before 2.3.0 allows attackers to cause a denial of service via a dataset whose version 1 or 2 fill value message has the "defined" flag set together with a negative size field, which is not normalized to the library's "undefined" sentinel and...

CVE-2026-19024 HDF5 H5Pget_fill_value NULL Pointer Dereference via Malformed Fill Value Message

NULL pointer dereference in H5Pgetfillvalue in HDF5 before 2.3.0 allows attackers to cause a denial of service via a dataset whose version 1 or 2 fill value message has the "defined" flag set together with a negative size field, which is not normalized to the library's "undefined" sentinel and...

CVE-2026-19024 HDF5 H5Pget_fill_value NULL Pointer Dereference via Malformed Fill Value Message

NULL pointer dereference in H5Pgetfillvalue in HDF5 before 2.3.0 allows attackers to cause a denial of service via a dataset whose version 1 or 2 fill value message has the "defined" flag set together with a negative size field, which is not normalized to the library's "undefined" sentinel and...

CVE-2026-19023 HDF5 h5dump Untrusted Pointer Dereference in Binary Output of Variable-Length String Datasets

Untrusted pointer dereference in the renderbinoutput function in the h5dump tool in HDF5 before 2.3.0 allows attackers to cause a denial of service via a variable-length string dataset with more than one element dumped in binary mode, which corrupts the per-element stride calculation and causes...

CVE-2026-19023

Untrusted pointer dereference in the renderbinoutput function in the h5dump tool in HDF5 before 2.3.0 allows attackers to cause a denial of service via a variable-length string dataset with more than one element dumped in binary mode, which corrupts the per-element stride calculation and causes...

CVE-2026-19023

The CVE describes an untrusted pointer dereference in the render_bin_output function of the h5dump tool from HDF5, caused by processing a variable-length string dataset with more than one element dumped in binary mode. Affected versions are cited as HDF5 before 2.1.1 (and related entries referenc...

CVE-2026-71256

nanoMODBUS through v1.23.0 contains an out-of-bounds stack read leading to a wild-pointer write in nmbsreaddeviceidentificationbasic / recvreaddeviceidentificationres in nanomodbus.c. A fixed 3-element stack array order3 = 0,1,2 maps object IDs to buffer indices. The server-supplied objectid fiel...

CVE-2026-71256 nanoMODBUS Client-Side Out-of-Bounds Read Leading to Wild-Pointer Write via object_id

nanoMODBUS through v1.23.0 contains an out-of-bounds stack read leading to a wild-pointer write in nmbsreaddeviceidentificationbasic / recvreaddeviceidentificationres in nanomodbus.c. A fixed 3-element stack array order3 = 0,1,2 maps object IDs to buffer indices. The server-supplied objectid fiel...

EUVD-2026-53333

nanoMODBUS through v1.23.0 contains an out-of-bounds stack read leading to a wild-pointer write in nmbsreaddeviceidentificationbasic / recvreaddeviceidentificationres in nanomodbus.c. A fixed 3-element stack array order3 = 0,1,2 maps object IDs to buffer indices. The server-supplied objectid fiel...

CVE-2026-71256

nanoMODBUS v1.23.0 is affected by an out-of-bounds stack read that enables a wild-pointer write via object_id handling in nanomodbus.c (nmbs_read_device_identification_basic()/recv_read_device_identification_res). A fixed 3-element array order maps object_id to buffer indices; server-provided obj...

CVE-2026-71256

nanoMODBUS through v1.23.0 contains an out-of-bounds stack read leading to a wild-pointer write in nmbsreaddeviceidentificationbasic / recvreaddeviceidentificationres in nanomodbus.c. A fixed 3-element stack array order3 = 0,1,2 maps object IDs to buffer indices. The server-supplied objectid fiel...

CVE-2026-71256 nanoMODBUS Client-Side Out-of-Bounds Read Leading to Wild-Pointer Write via object_id

nanoMODBUS through v1.23.0 contains an out-of-bounds stack read leading to a wild-pointer write in nmbsreaddeviceidentificationbasic / recvreaddeviceidentificationres in nanomodbus.c. A fixed 3-element stack array order3 = 0,1,2 maps object IDs to buffer indices. The server-supplied objectid fiel...