CVE-2025-6818
HIGHCVSS 7.8/10EPSS 0.24%
Last modified
CVE-2025-6818 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 H5O__chunk_protect of the file /src/H5Ochunk.c. EPSS estimates a 0.24% 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 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.
Metrics
Weakness Enumeration
Affected Software
| Vendor | Product | Versions |
|---|---|---|
| Hdfgroup | Hdf5 | 1.14.6 |
References
- https://github.com/HDFGroup/hdf5/issues/5573Exploit, Issue Tracking, Third Party Advisory
- https://vuldb.com/?ctiid.314256Permissions Required
- https://vuldb.com/?id.314256Third Party Advisory, VDB Entry
- https://vuldb.com/?submit.602326Third Party Advisory, VDB Entry
- https://github.com/HDFGroup/hdf5/issues/5573Exploit, Issue Tracking, Third Party Advisory
Timeline
- Published
- Last Modified
- Status
- Analyzed
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.
How severe is CVE-2025-6818?
CVE-2025-6818 has a CVSS score of 7.8/10 (HIGH severity). The EPSS model estimates a 0.24% probability of exploitation in the next 30 days.
How do I fix CVE-2025-6818?
Check the vendor references and advisories linked above for patched versions and mitigation guidance. You can also run a Strix scan to test if your systems are affected.
How Strix Helps
- How Strix found a critical auth bypass in etcdStrix autonomously discovered a critical authentication bypass in etcd, later designated CVE-2026-33413.
- Autonomous PentestingAI agents that find and validate exploitable vulnerabilities like this one across your applications.
- PR ReviewsPentest every pull request so vulnerable code is caught before it ships to production.
- AI Penetration TestingHow AI-driven penetration testing continuously covers your attack surface.
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Are you affected by CVE-2025-6818?
Run a free Strix scan to check your systems for this vulnerability.
Scan your code nowSource: NVD / NIST