CVE-2025-6818

Description

A vulnerability, which was classified as problematic, was found in HDF5 1.14.6. Affected is the function H5O__chunk_protect of the file /src/H5Ochunk.c. The manipulation leads to heap-based buffer overflow. An attack has to be approached locally. The exploit has been disclosed to the public and may be used.

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-119 Buffer Overflow

CWE-122 CWE-122

Affected Products

Vendor	Product	Versions
hdfgroup	hdf5	All

References

Exploits

https://github.com/HDFGroup/hdf5/issues/5573 https://github.com/user-attachments/files/20623382/hdf5_crash_5.txt https://github.com/HDFGroup/hdf5/issues/5573

Other References

https://vuldb.com/?ctiid.314256 https://vuldb.com/?id.314256 https://vuldb.com/?submit.602326

Frequently Asked Questions

What is CVE-2025-6818? +

A vulnerability, which was classified as problematic, was found in HDF5 1.14.6. Affected is the function H5O__chunk_protect of the file /src/H5Ochunk.c. The manipulation leads to heap-based buffer overflow. An attack has 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-2025-6818? +

CVE-2025-6818 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-2025-6818? +

CVE-2025-6818 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-2025-6818? +

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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