CVE-2025-6856
Last modified
CVE-2025-6856 is a high-severity vulnerability rated 7.8/10 on the CVSS scale. A vulnerability, which was classified as problematic, was found in HDF5 1.14.6. Affected is the function H5FL__reg_gc_list of the file src/H5FL.c. EPSS estimates a 0.20% chance of exploitation in the next 30 days.
Description
A vulnerability, which was classified as problematic, was found in HDF5 1.14.6. Affected is the function H5FL__reg_gc_list 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.
Metrics
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:N/VI:N/VA:L/SC:N/SI:N/SA:N/E:P/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X
Weakness Enumeration
Affected Software
| Vendor | Product | Versions |
|---|---|---|
| Hdfgroup | Hdf5 | 1.14.6 |
References
- https://github.com/HDFGroup/hdf5/issues/5574Exploit, Issue Tracking, Third Party Advisory
- https://vuldb.com/?ctiid.314328Permissions Required
- https://vuldb.com/?id.314328Third Party Advisory, VDB Entry
- https://vuldb.com/?submit.602528Third Party Advisory, VDB Entry
Timeline
- Published
- Last Modified
- Status
- Analyzed
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- How Strix found a critical auth bypass in etcdStrix autonomously discovered a critical authentication bypass in etcd, later designated CVE-2026-33413.
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