CVE-2025-6856
A vulnerability, which was classified as problematic, was found in HDF5 1.14.6.
Does this matter?
Lower severity and a low EPSS score (0.25%). Track it; it rarely justifies an emergency change on its own.
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.
- CVSS 4.0
- 1.9 LOWCVSS: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/M
- EPSS
- 0.25% probability · 16th percentile
- Public exploits
- None in Exploit-DB
- CISA KEV
- Not listed
- Weakness
- CWE-119, CWE-416
- Affected
- hdfgroup/hdf5
- Source
- cna@vuldb.com
EPSS 0.2% since 26 October 2026; no change recorded yet. Points are recorded when the score first appears and whenever it moves by a percentage point or more.
References
- https://github.com/HDFGroup/hdf5/issues/5574Exploit, Issue Tracking, Third Party Advisory
- https://github.com/user-attachments/files/20623417/hdf5_crash_6.txtExploit
- https://vuldb.com/?ctiid.314328Permissions Required
- https://vuldb.com/?id.314328Third Party Advisory, VDB Entry
- https://vuldb.com/?submit.602528Third Party Advisory, VDB Entry
Source: NVD record, EPSS from FIRST.org, KEV from CISA, exploits from Exploit-DB. Refreshed daily. Download this record as JSON.