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The HDF Group

18 known vulnerabilities.

The HDF Group at a glance

Last 12 months
18
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0 5 10 December 2025: 0 vulnerabilities Dec 2025 January 2026: 0 vulnerabilities February 2026: 0 vulnerabilities March 2026: 0 vulnerabilities Mar April 2026: 0 vulnerabilities May 2026: 0 vulnerabilities June 2026: 0 vulnerabilities Jun July 2026: 3 vulnerabilities August 2026: 6 vulnerabilities September 2026: 1 vulnerability Sep October 2026: 2 vulnerabilities November 2026: 6 vulnerabilities
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18 results · Feed

  • Medium 5.4

    NULL Pointer Dereference in H5HL_unprotect via Corrupted File

    HDF5 through 2.2.0 contains a NULL pointer dereference vulnerability in H5HL_unprotect() in src/H5HL.c. H5HL_protect() pins a single metadata cache entry for a local heap, either the heap prefix or the separate data block, and H5HL_unprotect() unpins it on th…

  • Medium 6.9

    Heap Buffer Over-read via Non-Terminated Link Data in H5L__extern_traverse

    HDF5 through 2.2.0 contains a heap buffer over-read vulnerability in H5L__extern_traverse() in src/H5Lexternal.c, the default traversal callback for external links. The callback locates the target file name and object path within the link’s user data using st…

  • Low 1.9

    Heap Buffer Over-read via Malformed Message Size in HDF5's H5O__chunk_deserialize

    HDF5 through 2.2.0 contains a heap buffer over-read vulnerability in H5O__chunk_deserialize() in src/H5Ocache.c. When decoding object header messages, the declared message size is checked against the end of the chunk image before the remainder of the message …

  • Medium 4.7

    Integer Underflow Leads to Out-of-Bounds Read via Truncated Chunk in HDF5 Szip Filter

    HDF5 through 2.2.0 contains an out-of-bounds read vulnerability in H5Z__filter_szip() in src/H5Zszip.c. When decoding a szip-compressed chunk, the function subtracts the 4-byte uncompressed-length header from the chunk length without first verifying that the …

  • Low 1.9

    Uninitialized Heap Memory Disclosure via Truncated Chunk in HDF5 Scale-Offset Filter

    HDF5 through 2.2.0 contains an uninitialized memory read vulnerability in H5Z__filter_scaleoffset() in src/H5Zscaleoffset.c. The decode path validates reads against the allocated size of the chunk buffer rather than the number of bytes actually read from the …

  • Medium 4.3

    Uncontrolled Recursion in HDF5 H5B__iterate_helper() via Crafted File

    HDF5 through 2.2.0 contains an uncontrolled recursion vulnerability in H5B__iterate_helper() in src/H5B.c. When iterating a version 1 B-tree, the function does not verify that a child node’s level matches the expected level. That check is performed only in H5…

  • High 8.5

    HDF5 heap buffer overflow in H5VM_array_fill via crafted fill-value metadata

    A heap-based buffer overflow in H5VM_array_fill() in src/H5VM.c in HDF5 before 2.2.0 lets a remote attacker cause an application crash and possibly execute arbitrary code with a crafted HDF5 file. When a dataset's unallocated chunks are read, H5D__fill_init()…

  • Medium 6.8

    HDF5 scale-offset filter heap buffer over-read via crafted chunk

    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 data…

  • Medium 4.6

    Heap Use-After-Free in H5T__conv_f_f

    A heap-use-after-free vulnerability exists in H5T__conv_f_f() in src/H5Tconv.c in HDF5 before 1.14.2. When converting a compound datatype containing floating-point members during a dataset read, a temporary buffer allocated with calloc() is freed and subseque…

  • Medium 6.8

    HDF5 integer underflow in Fletcher32 filter leads to massive out-of-bounds read

    H5Z__filter_fletcher32 in H5Zfletcher32.c in HDF5 prior to 2.3.0 computes the data length to checksum by subtracting the 4-byte trailing checksum size from the input buffer size without checking that the buffer is at least 4 bytes, allowing a size_t underflow…

  • Medium 6.9

    HDF5 out-of-bounds heap read in N-Bit filter decompression

    The H5Z__nbit_decompress_one_byte, H5Z__nbit_decompress_one_nooptype, and H5Z__nbit_decompress_one_atomic functions in H5Znbit.c in HDF5 prior to 2.3.0 advance a read index into the compressed chunk buffer without bounding it against the buffer's actual size.…

  • Medium 6.8

    Nbit filter NULL/short parameter-array dereference

    H5Z__filter_nbit in H5Znbit.c in HDF5 prior to 2.3.0 dereferences cd_values[0] through cd_values[4] without validating that cd_values is non-NULL or that cd_nelmts is at least 5, the fixed size of the filter's header. This allows attackers to cause a denial o…

  • Medium 6.8

    HDF5 divide-by-zero (SIGFPE) via mismatched chunk-layout dimensionality and dataspace rank on dataset open

    H5O__layout_decode in H5Olayout.c in HDF5 through 2.3.0 does not validate that a chunked dataset's stored chunk-layout dimensionality matches its dataspace rank when an existing dataset is opened, whereas this check is performed only at dataset-creation time.…

  • High 8.2

    HDF5 H5Pget_fill_value NULL Pointer Dereference via Malformed Fill Value Message

    NULL pointer dereference in H5Pget_fill_value 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 t…

  • Medium 6.8

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

    Untrusted pointer dereference in the render_bin_output 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…

  • Medium 5.2

    NULL Pointer Dereference in HDF5 via Invalid Variable-Length Datatype Type Tag

    HDF5 contains a NULL pointer dereference vulnerability. Processing a crafted HDF5 file containing an attribute with an invalid variable-length datatype type field may cause the application to crash when the attribute is read.

  • Medium 4.0

    Double Free in H5D__chunk_copy() in HDF5 via a Crafted Chunk-Index Size Field

    A double free vulnerability was discovered in the HDF5 library. Processing a crafted HDF5 file containing an oversized chunk size field via h5repack may cause the application to abort due to a double free.

  • Medium 5.5

    HDF5 SOHM List Index Heap Buffer Overflow

    Heap-based buffer overflow in the SOHM list-index deserialization code in HDF5 through 2.1.1 on all platforms allows attackers to cause a denial of service (crash) via a crafted HDF5 file whose shared-message list index declares a num_messages count exceeding…