JLSEC-2026-298

HDF5 through 1.14.3 contains a buffer overflow in H5Zfilterfletcher32, resulting in the corruption of the instruction pointer and causing denial of service or potential code execution...

JLSEC-2026-329

A vulnerability was found in HDF5 up to 1.14.6. It has been declared as problematic. Affected by this vulnerability is the function H5Omsgflush of the file src/H5Omessage.c. The manipulation of the argument oh leads to heap-based buffer overflow. The attack needs to be approached locally. The...

JLSEC-2026-324

HDF5 Library through 1.14.3 has a heap-based buffer overflow in H5Tconvstructopt in H5Tconv.c...

JLSEC-2026-315

HDF5 Library through 1.14.3 contains a heap-based buffer over-read in H5Faddrdecodelen in H5Fint.c, resulting in the corruption of the instruction pointer...

JLSEC-2026-330

A vulnerability was found in HDF5 up to 1.14.6. It has been rated as critical. Affected by this issue is the function H5FLblkgclist of the file src/H5FL.c. The manipulation of the argument H5FLblkheadt leads to use after free. An attack has to be approached locally. The exploit has been disclosed...

JLSEC-2026-314

HDF5 Library through 1.14.3 contains a heap-based buffer overflow in H5Tcopyreopen in H5T.c, resulting in the corruption of the instruction pointer...

JLSEC-2026-352

HDF5 is software for managing data. Prior to version 1.14.4-2, an attacker who can control an h5 file parsed by HDF5 can trigger a write-based heap buffer overflow condition. This can lead to a denial-of-service condition, and potentially further issues such as remote code execution depending on...

JLSEC-2026-350

A vulnerability, which was classified as problematic, has been found in HDF5 1.14.6. This issue affects the function H5FLmalloc of the file src/H5FL.c. The manipulation leads to memory leak. Attacking locally is a requirement. The exploit has been disclosed to the public and may be used...

JLSEC-2026-311

HDF5 Library through 1.14.3 contains a heap-based buffer over-read in H5Odtypeencodehelper in H5Odtype.c...

JLSEC-2026-304

HDF5 Library through 1.14.3 allows stack consumption in the function H5Eprintfstack in H5Eint.c...

JLSEC-2026-351

A vulnerability, which was classified as problematic, was found in HDF5 1.14.6. Affected is the function H5FSsectlinksize of the file src/H5FSsection.c. The manipulation leads to heap-based buffer overflow. It is possible to launch the attack on the local host. The exploit has been disclosed to t...

JLSEC-2026-323

HDF5 Library through 1.14.3 has a heap buffer overflow in H5Spointdeserialize in H5Spoint.c...

JLSEC-2026-332

A vulnerability classified as problematic was found in HDF5 up to 1.14.6. This vulnerability affects the function H5Faccumfree of the file src/H5Faccum.c. The manipulation of the argument overlapsize leads to heap-based buffer overflow. Attacking locally is a requirement. The exploit has been...

JLSEC-2026-325

A vulnerability, which was classified as critical, was found in HDF5 1.14.6. Affected is the function H5SMdelete of the file H5SM.c of the component h5 File Handler. The manipulation leads to heap-based buffer overflow. It is possible to launch the attack remotely. The complexity of an attack is...

JLSEC-2026-346

A vulnerability, which was classified as problematic, was found in HDF5 1.14.6. Affected is the function H5FLreggclist of the file src/H5FL.c. The manipulation leads to use after free. Attacking locally is a requirement. The exploit has been disclosed to the public and may be used...

JLSEC-2026-343

A vulnerability classified as problematic was found in HDF5 1.14.6. This vulnerability affects the function H5Ofsinfoencode of the file /src/H5Ofsinfo.c. The manipulation leads to heap-based buffer overflow. It is possible to launch the attack on the local host. The exploit has been disclosed to...

JLSEC-2026-290

HDF5 through 1.14.3 contains a heap buffer overflow in H5HGread, resulting in the corruption of the instruction pointer and causing denial of service or potential code execution...

JLSEC-2026-333

A vulnerability, which was classified as problematic, has been found in HDF5 up to 1.14.6. Affected by this issue is the function H5Faddrencodelen of the file src/H5Fint.c. The manipulation of the argument pp leads to heap-based buffer overflow. Attacking locally is a requirement. The exploit has...

JLSEC-2026-340

A vulnerability, which was classified as critical, has been found in HDF5 up to 1.14.6. Affected by this issue is the function H5FSsectfindnode of the file H5FSsection.c. The manipulation leads to heap-based buffer overflow. It is possible to launch the attack on the local host. The exploit has...

JLSEC-2026-354

HDF5 is software for managing data. In 1.14.1-2 and earlier, a heap-use-after-free was found in the h5dump helper utility. An attacker who can supply a malicious h5 file can trigger a heap use-after-free. The freed object is referenced in a memmove call from H5Tconvstruct. The original object was...