CVEvulnerability
CVE-2026-34734
7.8 HIGH
Official page ↗
- Status
- Modified
- Published
- 2026-04-09
- Last modified
- 2026-10-26
- Assigner
- [email protected]
- CVSS 3.1 ([email protected])
- 7.8 HIGH — CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
- CVSS 3.1 (0b0ca135-0b70-47e7-9f44-1890c2a1c46c)
- 7.8 HIGH — CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
- Weaknesses
- CWE-416, CWE-825
Description
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 H5T__conv_struct. The original object was allocated by H5D__typeinfo_init_phase3 and freed by H5D__typeinfo_term.
Affected configurations
• hdfgroup hdf5 (< 1.14.1-2)
Related
References
- https://github.com/HDFGroup/hdf5/security/advisories/GHSA-w7v2-9cmr-pwwj Exploit, Vendor Advisory
- https://access.redhat.com/security/cve/CVE-2026-34734 access.redhat.com
- https://bugzilla.redhat.com/show_bug.cgi?id=2457034 bugzilla.redhat.com
- https://github.com/HDFGroup/hdf5/security/advisories/GHSA-w7v2-9cmr-pwwj Exploit, Vendor Advisory
- https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-34734.json security.access.redhat.com