CVE-2025-6856
3.3 · LOWOverview
CVE-2025-6856 is a low-severity vulnerability affecting hdfgroup hdf5. It was published on June 29, 2025 and has a CVSS 3.1 base score of 3.3 (LOW).
This vulnerability has a CVSS 3.1 base score of 3.3, rated LOW. It requires local or adjacent network access to exploit. Some level of privileges is required for exploitation.
Technical 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.
Remediation
Check the references section for vendor advisories and patches from hdfgroup. Update hdf5 to the latest patched version. If immediate patching is not possible, review the CVSS vector to understand the attack surface and apply compensating controls such as network segmentation or access restrictions.
Affected Products
| Vendor | Product | Versions | Status |
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Frequently Asked Questions
What is CVE-2025-6856?
CVE-2025-6856 is a low-severity vulnerability affecting hdfgroup hdf5. It was published on June 29, 2025 and has a CVSS 3.1 base score of 3.3 (LOW).
How severe is CVE-2025-6856?
This vulnerability has a CVSS 3.1 base score of 3.3, rated LOW. It requires local or adjacent network access to exploit. Some level of privileges is required for exploitation.
How do I fix or remediate CVE-2025-6856?
Check the references section for vendor advisories and patches from hdfgroup. Update hdf5 to the latest patched version. If immediate patching is not possible, review the CVSS vector to understand the attack surface and apply compensating controls such as network segmentation or access restrictions.
How can CyberStrike help with CVE-2025-6856?
CyberStrike's AI-powered security agents can automatically detect CVE-2025-6856 across your infrastructure using autonomous pentesting, DAST scanning, and HackBrowser. The platform continuously monitors for known vulnerabilities and provides actionable remediation guidance prioritized by real-world exploitability.
How CyberStrike Helps
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