CVE-2025-6858: hdf5 Null Dereference — Exploit

Description

A vulnerability was found in HDF5 1.14.6 and classified as problematic. Affected by this issue is the function H5C__flush_single_entry of the file src/H5Centry.c. The manipulation leads to null pointer dereference. The attack needs to be approached locally. The exploit has been disclosed to the public and may be used.

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CVSS v3.1 Score

3.3

LOW

CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:L

Weakness Type (CWE)

CWE-404 CWE-404

CWE-476 CWE-476

Affected Products

Vendor	Product	Versions
hdfgroup	hdf5	All

References

Exploits

https://github.com/HDFGroup/hdf5/issues/5576 https://github.com/user-attachments/files/20623475/hdf5_crash_8.txt

Other References

https://vuldb.com/?ctiid.314330 https://vuldb.com/?id.314330 https://vuldb.com/?submit.602530

Frequently Asked Questions

What is CVE-2025-6858? +

A vulnerability was found in HDF5 1.14.6 and classified as problematic. Affected by this issue is the function H5C__flush_single_entry of the file src/H5Centry.c. The manipulation leads to null pointer dereference. The attack needs to be approached locally. The exploit has been disclosed to the public and may be used. It has a CVSS v3.1 base score of 3.3 (LOW).

How severe is CVE-2025-6858? +

CVE-2025-6858 has a CVSS v3.1 score of 3.3 out of 10, rated LOW. This is a low-severity vulnerability with limited impact.

What products are affected by CVE-2025-6858? +

CVE-2025-6858 affects products from hdfgroup, specifically: hdf5. Check the affected products table above for specific version ranges.

How do I check if I'm vulnerable to CVE-2025-6858? +

You can use Secably's free Website Scanner to check your website for known vulnerabilities. For infrastructure scanning, use the Port Scanner to identify exposed services that may be affected. Check the vendor advisories linked above for specific patch and version information.

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