Metrics
Affected Vendors & Products
No advisories yet.
Solution
No solution given by the vendor.
Workaround
No workaround given by the vendor.
| Link | Providers |
|---|---|
| https://github.com/HDFGroup/hdf5/pull/6708 |
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Tue, 03 Nov 2026 18:30:00 +0000
| Type | Values Removed | Values Added |
|---|---|---|
| Metrics |
ssvc
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Tue, 03 Nov 2026 17:00:00 +0000
| Type | Values Removed | Values Added |
|---|---|---|
| First Time appeared |
Hdfgroup
Hdfgroup hdf5 |
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| Vendors & Products |
Hdfgroup
Hdfgroup hdf5 |
Tue, 03 Nov 2026 15:45:00 +0000
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|---|---|---|
| Description | 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 strlen() without validating the buffer against its stored size (udata_size, which was marked unused). A crafted HDF5 file containing an external link whose data is not NULL-terminated, or is too short to hold both strings, causes strlen() to read past the end of the udata heap buffer, and the derived object path pointer may also point outside the buffer. The overrun is unbounded and continues until a zero byte is found. The flaw is triggered when the malicious link is traversed, for example when opening an object through it. An attacker who can get a user or application to access a crafted file can cause a denial of service, and adjacent heap contents may be incorporated into the external file name or object path the library attempts to open. | |
| Title | Heap Buffer Over-read via Non-Terminated Link Data in H5L__extern_traverse | |
| Weaknesses | CWE-125 | |
| References |
| |
| Metrics |
cvssV4_0
|
Projects
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Status: PUBLISHED
Assigner: HDFG
Published:
Updated: 2026-11-03T17:52:58.130Z
Reserved: 2026-11-02T21:30:11.791Z
Link: CVE-2026-120757
Updated: 2026-11-03T17:52:51.508Z
Status : Awaiting Analysis
Published: 2026-11-03T16:17:23.090
Modified: 2026-11-03T18:17:56.807
Link: CVE-2026-120757
No data.
OpenCVE Enrichment
Updated: 2026-11-03T16:45:14Z