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21 vulnerabilities by The HDF Group
CVE-2026-92627 (GCVE-0-2026-92627)
Vulnerability from nvd – Published: 2026-09-16 15:16 – Updated: 2026-09-17 17:36
VLAI
EPSS
VEX
Title
Heap Use-After-Free in H5T__conv_f_f
Summary
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 subsequently read from within the same conversion routine. An attacker who can supply a crafted HDF5 file containing a specially constructed compound datatype can trigger the use-after-free when the file is parsed by an application that reads the affected dataset, such as h5dump. This can result in a crash and, depending on heap layout and allocator behavior, may be exploitable for further memory corruption up to remote code execution.
Severity
SSVC
Exploitation: none
Automatable: no
Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-09-17 17:36 UTC
CWE
- CWE-416 - Use after free
Assigner
References
1 reference
Impacted products
1 product
| Vendor | Product | Version | |
|---|---|---|---|
| The HDF Group | HDF5 |
Affected:
< 1.14.2
|
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CVE-2026-19028 (GCVE-0-2026-19028)
Vulnerability from nvd – Published: 2026-08-05 23:15 – Updated: 2026-08-06 14:25
VLAI
EPSS
VEX
Title
HDF5 integer underflow in Fletcher32 filter leads to massive out-of-bounds read
Summary
H5Z__filter_fletcher32 in H5Zfletcher32.c in HDF5 through 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. This allows attackers to cause a denial of service (massively out-of-bounds read and application crash in H5_checksum_fletcher32) via a crafted HDF5 file with a Fletcher32-filtered chunk smaller than 4 bytes, triggered via H5Dread, e.g. by the h5ls or h5dump tools.
Severity
SSVC
Exploitation: poc
Automatable: no
Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-08-06 14:24 UTC
CWE
Assigner
References
Impacted products
1 product
| Vendor | Product | Version | |
|---|---|---|---|
| The HDF Group | HDF5 |
Affected:
<=2.3.0
|
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CVE-2026-19027 (GCVE-0-2026-19027)
Vulnerability from nvd – Published: 2026-08-05 23:12 – Updated: 2026-08-06 14:30
VLAI
EPSS
VEX
Title
HDF5 out-of-bounds heap read in N-Bit filter decompression
Summary
The H5Z__nbit_decompress_one_byte, H5Z__nbit_decompress_one_nooptype, and H5Z__nbit_decompress_one_atomic functions in H5Znbit.c in HDF5 through 2.3.0 advance a read index into the compressed chunk buffer without bounding it against the buffer's actual size. This allows attackers to cause an out-of-bounds heap read, and in constrained cases disclosure of adjacent heap memory into decompressed dataset values, via a crafted HDF5 file whose N-Bit filter parameters describe more decompressed data than the stored compressed chunk actually contains, triggered via H5Dread, e.g. by the h5ls or h5repack tools.
Severity
SSVC
Exploitation: poc
Automatable: no
Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-08-06 14:29 UTC
CWE
- CWE-125 - Out-of-bounds read
Assigner
References
Impacted products
1 product
| Vendor | Product | Version | |
|---|---|---|---|
| The HDF Group | HDF5 |
Affected:
<=2.3.0
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CVE-2026-19026 (GCVE-0-2026-19026)
Vulnerability from nvd – Published: 2026-08-05 22:47 – Updated: 2026-08-06 14:31
VLAI
EPSS
VEX
Title
Nbit filter NULL/short parameter-array dereference
Summary
H5Z__filter_nbit in H5Znbit.c in HDF5 through 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 of service via a crafted HDF5 file that stores the N-Bit filter pipeline message with zero client-data values, opened and read via H5Dread, e.g. by the h5ls or h5repack tools.
Severity
SSVC
Exploitation: poc
Automatable: no
Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-08-06 14:31 UTC
CWE
Assigner
References
Impacted products
1 product
| Vendor | Product | Version | |
|---|---|---|---|
| The HDF Group | HDF5 |
Affected:
<=2.3.0
|
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CVE-2026-19025 (GCVE-0-2026-19025)
Vulnerability from nvd – Published: 2026-08-05 22:35 – Updated: 2026-08-06 14:34
VLAI
EPSS
VEX
Title
HDF5 divide-by-zero (SIGFPE) via mismatched chunk-layout dimensionality and dataspace rank on dataset open
Summary
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. This allows attackers to cause a denial of service (divide-by-zero and application crash in H5S__hyper_iter_get_seq_list in src/H5Shyper.c) via a crafted HDF5 file with mismatched chunk/dataspace ranks that is opened and read via H5Dopen2 and H5Dread, e.g. by the h5repack tool.
Severity
SSVC
Exploitation: poc
Automatable: no
Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-08-06 14:34 UTC
CWE
- CWE-369 - Divide by zero
Assigner
References
1 reference
Impacted products
1 product
| Vendor | Product | Version | |
|---|---|---|---|
| The HDF Group | HDF5 |
Affected:
<= 2.3.0
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CVE-2026-19024 (GCVE-0-2026-19024)
Vulnerability from nvd – Published: 2026-08-05 22:14 – Updated: 2026-08-06 15:30
VLAI
EPSS
VEX
Title
HDF5 H5Pget_fill_value NULL Pointer Dereference via Malformed Fill Value Message
Summary
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 the library's "undefined" sentinel and reaches H5T_path_find with a NULL datatype.
Severity
SSVC
Exploitation: poc
Automatable: no
Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-08-06 14:36 UTC
CWE
- CWE-476 - NULL pointer dereference
Assigner
References
1 reference
Impacted products
1 product
| Vendor | Product | Version | |
|---|---|---|---|
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Affected:
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(custom)
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CVE-2026-19023 (GCVE-0-2026-19023)
Vulnerability from nvd – Published: 2026-08-05 22:13 – Updated: 2026-08-06 15:30
VLAI
EPSS
VEX
Title
HDF5 h5dump Untrusted Pointer Dereference in Binary Output of Variable-Length String Datasets
Summary
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-element stride calculation and causes subsequent elements to be read from a misaligned offset and dereferenced as a pointer.
Severity
SSVC
Exploitation: poc
Automatable: no
Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-08-06 13:31 UTC
CWE
- CWE-822 - Untrusted pointer dereference
Assigner
References
1 reference
Impacted products
1 product
| Vendor | Product | Version | |
|---|---|---|---|
| The HDF Group | HDF5 |
Affected:
<= 2.3.0
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CVE-2026-17574 (GCVE-0-2026-17574)
Vulnerability from nvd – Published: 2026-07-27 15:12 – Updated: 2026-07-27 18:36
VLAI
EPSS
VEX
Title
NULL Pointer Dereference in HDF5 via Invalid Variable-Length Datatype Type Tag
Summary
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.
Severity
SSVC
Exploitation: none
Automatable: no
Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-07-27 18:36 UTC
Assigner
References
1 reference
Impacted products
1 product
| Vendor | Product | Version | |
|---|---|---|---|
| The HDF Group | HDF5 |
Affected:
<= 2.1.1
(custom)
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CVE-2026-17573 (GCVE-0-2026-17573)
Vulnerability from nvd – Published: 2026-07-27 15:11 – Updated: 2026-07-27 17:27
VLAI
EPSS
VEX
Title
Double Free in H5D__chunk_copy() in HDF5 via a Crafted Chunk-Index Size Field
Summary
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.
Severity
SSVC
Exploitation: poc
Automatable: no
Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-07-27 17:26 UTC
CWE
- CWE-415 - Double free
Assigner
References
1 reference
Impacted products
1 product
| Vendor | Product | Version | |
|---|---|---|---|
| The HDF Group | HDF5 |
Affected:
<= 2.1.1
(custom)
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CVE-2026-17572 (GCVE-0-2026-17572)
Vulnerability from nvd – Published: 2026-07-27 15:11 – Updated: 2026-07-27 18:37
VLAI
EPSS
VEX
Title
HDF5 SOHM List Index Heap Buffer Overflow
Summary
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 list_max, triggering out-of-bounds heap reads and writes in H5SM__cache_list_deserialize and H5SM__cache_list_verify_chksum.
Severity
SSVC
Exploitation: none
Automatable: no
Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-07-27 18:37 UTC
Assigner
References
1 reference
Impacted products
1 product
| Vendor | Product | Version | |
|---|---|---|---|
| The HDF Group | HDF5 |
Affected:
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(custom)
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CVE-2026-92627 (GCVE-0-2026-92627)
Vulnerability from cvelistv5 – Published: 2026-09-16 15:16 – Updated: 2026-09-17 17:36
VLAI
EPSS
VEX
Title
Heap Use-After-Free in H5T__conv_f_f
Summary
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 subsequently read from within the same conversion routine. An attacker who can supply a crafted HDF5 file containing a specially constructed compound datatype can trigger the use-after-free when the file is parsed by an application that reads the affected dataset, such as h5dump. This can result in a crash and, depending on heap layout and allocator behavior, may be exploitable for further memory corruption up to remote code execution.
Severity
SSVC
Exploitation: none
Automatable: no
Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-09-17 17:36 UTC
CWE
- CWE-416 - Use after free
Assigner
References
1 reference
Impacted products
1 product
| Vendor | Product | Version | |
|---|---|---|---|
| The HDF Group | HDF5 |
Affected:
< 1.14.2
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CVE-2026-19028 (GCVE-0-2026-19028)
Vulnerability from cvelistv5 – Published: 2026-08-05 23:15 – Updated: 2026-08-06 14:25
VLAI
EPSS
VEX
Title
HDF5 integer underflow in Fletcher32 filter leads to massive out-of-bounds read
Summary
H5Z__filter_fletcher32 in H5Zfletcher32.c in HDF5 through 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. This allows attackers to cause a denial of service (massively out-of-bounds read and application crash in H5_checksum_fletcher32) via a crafted HDF5 file with a Fletcher32-filtered chunk smaller than 4 bytes, triggered via H5Dread, e.g. by the h5ls or h5dump tools.
Severity
SSVC
Exploitation: poc
Automatable: no
Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-08-06 14:24 UTC
CWE
Assigner
References
Impacted products
1 product
| Vendor | Product | Version | |
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| The HDF Group | HDF5 |
Affected:
<=2.3.0
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CVE-2026-19027 (GCVE-0-2026-19027)
Vulnerability from cvelistv5 – Published: 2026-08-05 23:12 – Updated: 2026-08-06 14:30
VLAI
EPSS
VEX
Title
HDF5 out-of-bounds heap read in N-Bit filter decompression
Summary
The H5Z__nbit_decompress_one_byte, H5Z__nbit_decompress_one_nooptype, and H5Z__nbit_decompress_one_atomic functions in H5Znbit.c in HDF5 through 2.3.0 advance a read index into the compressed chunk buffer without bounding it against the buffer's actual size. This allows attackers to cause an out-of-bounds heap read, and in constrained cases disclosure of adjacent heap memory into decompressed dataset values, via a crafted HDF5 file whose N-Bit filter parameters describe more decompressed data than the stored compressed chunk actually contains, triggered via H5Dread, e.g. by the h5ls or h5repack tools.
Severity
SSVC
Exploitation: poc
Automatable: no
Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-08-06 14:29 UTC
CWE
- CWE-125 - Out-of-bounds read
Assigner
References
Impacted products
1 product
| Vendor | Product | Version | |
|---|---|---|---|
| The HDF Group | HDF5 |
Affected:
<=2.3.0
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CVE-2026-19026 (GCVE-0-2026-19026)
Vulnerability from cvelistv5 – Published: 2026-08-05 22:47 – Updated: 2026-08-06 14:31
VLAI
EPSS
VEX
Title
Nbit filter NULL/short parameter-array dereference
Summary
H5Z__filter_nbit in H5Znbit.c in HDF5 through 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 of service via a crafted HDF5 file that stores the N-Bit filter pipeline message with zero client-data values, opened and read via H5Dread, e.g. by the h5ls or h5repack tools.
Severity
SSVC
Exploitation: poc
Automatable: no
Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-08-06 14:31 UTC
CWE
Assigner
References
Impacted products
1 product
| Vendor | Product | Version | |
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| The HDF Group | HDF5 |
Affected:
<=2.3.0
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CVE-2026-19025 (GCVE-0-2026-19025)
Vulnerability from cvelistv5 – Published: 2026-08-05 22:35 – Updated: 2026-08-06 14:34
VLAI
EPSS
VEX
Title
HDF5 divide-by-zero (SIGFPE) via mismatched chunk-layout dimensionality and dataspace rank on dataset open
Summary
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. This allows attackers to cause a denial of service (divide-by-zero and application crash in H5S__hyper_iter_get_seq_list in src/H5Shyper.c) via a crafted HDF5 file with mismatched chunk/dataspace ranks that is opened and read via H5Dopen2 and H5Dread, e.g. by the h5repack tool.
Severity
SSVC
Exploitation: poc
Automatable: no
Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-08-06 14:34 UTC
CWE
- CWE-369 - Divide by zero
Assigner
References
1 reference
Impacted products
1 product
| Vendor | Product | Version | |
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| The HDF Group | HDF5 |
Affected:
<= 2.3.0
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CVE-2026-19024 (GCVE-0-2026-19024)
Vulnerability from cvelistv5 – Published: 2026-08-05 22:14 – Updated: 2026-08-06 15:30
VLAI
EPSS
VEX
Title
HDF5 H5Pget_fill_value NULL Pointer Dereference via Malformed Fill Value Message
Summary
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 the library's "undefined" sentinel and reaches H5T_path_find with a NULL datatype.
Severity
SSVC
Exploitation: poc
Automatable: no
Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-08-06 14:36 UTC
CWE
- CWE-476 - NULL pointer dereference
Assigner
References
1 reference
Impacted products
1 product
| Vendor | Product | Version | |
|---|---|---|---|
| The HDF Group | HDF5 |
Affected:
<= 2.3.0
(custom)
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CVE-2026-19023 (GCVE-0-2026-19023)
Vulnerability from cvelistv5 – Published: 2026-08-05 22:13 – Updated: 2026-08-06 15:30
VLAI
EPSS
VEX
Title
HDF5 h5dump Untrusted Pointer Dereference in Binary Output of Variable-Length String Datasets
Summary
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-element stride calculation and causes subsequent elements to be read from a misaligned offset and dereferenced as a pointer.
Severity
SSVC
Exploitation: poc
Automatable: no
Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-08-06 13:31 UTC
CWE
- CWE-822 - Untrusted pointer dereference
Assigner
References
1 reference
Impacted products
1 product
| Vendor | Product | Version | |
|---|---|---|---|
| The HDF Group | HDF5 |
Affected:
<= 2.3.0
(custom)
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CVE-2026-17574 (GCVE-0-2026-17574)
Vulnerability from cvelistv5 – Published: 2026-07-27 15:12 – Updated: 2026-07-27 18:36
VLAI
EPSS
VEX
Title
NULL Pointer Dereference in HDF5 via Invalid Variable-Length Datatype Type Tag
Summary
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.
Severity
SSVC
Exploitation: none
Automatable: no
Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-07-27 18:36 UTC
Assigner
References
1 reference
Impacted products
1 product
| Vendor | Product | Version | |
|---|---|---|---|
| The HDF Group | HDF5 |
Affected:
<= 2.1.1
(custom)
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CVE-2026-17573 (GCVE-0-2026-17573)
Vulnerability from cvelistv5 – Published: 2026-07-27 15:11 – Updated: 2026-07-27 17:27
VLAI
EPSS
VEX
Title
Double Free in H5D__chunk_copy() in HDF5 via a Crafted Chunk-Index Size Field
Summary
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.
Severity
SSVC
Exploitation: poc
Automatable: no
Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-07-27 17:26 UTC
CWE
- CWE-415 - Double free
Assigner
References
1 reference
Impacted products
1 product
| Vendor | Product | Version | |
|---|---|---|---|
| The HDF Group | HDF5 |
Affected:
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CVE-2026-17572 (GCVE-0-2026-17572)
Vulnerability from cvelistv5 – Published: 2026-07-27 15:11 – Updated: 2026-07-27 18:37
VLAI
EPSS
VEX
Title
HDF5 SOHM List Index Heap Buffer Overflow
Summary
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 list_max, triggering out-of-bounds heap reads and writes in H5SM__cache_list_deserialize and H5SM__cache_list_verify_chksum.
Severity
SSVC
Exploitation: none
Automatable: no
Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-07-27 18:37 UTC
Assigner
References
1 reference
Impacted products
1 product
| Vendor | Product | Version | |
|---|---|---|---|
| The HDF Group | HDF5 |
Affected:
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(custom)
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VAR-202506-1204
Vulnerability from variot - Updated: 2025-08-17 23:25A vulnerability has been found in HDF5 up to 1.14.6 and classified as critical. This vulnerability affects the function H5F_addr_decode_len of the file /hdf5/src/H5Fint.c. The manipulation leads to heap-based buffer overflow. An attack has to be approached locally. The exploit has been disclosed to the public and may be used. The HDF Group of HDF5 contains a buffer error vulnerability, a heap-based buffer overflow vulnerability, and an out-of-bounds write vulnerability.Information is obtained, information is tampered with, and service operation is interrupted. (DoS) It may be in a state. HDF5 is an open-source library for HDF. An attacker could exploit this vulnerability to cause a denial of service
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