CVE-2025-2915 HDF5 H5Faccum.c H5F__accum_free heap-based overflow
A heap-based buffer overflow in the HDF5 library allows local attackers to execute arbitrary code or cause a denial of service via crafted files.
- Exploited in the wild
- Not known
- Login needed
- Any signed-in user
- Attackable
- Local or same network only
- Victim action needed
- Not needed
- Fix
- Available
What is CVE-2025-2915?
CVE-2025-2915 is a medium-severity memory corruption vulnerability in Hdfgroup Hdf5, published on 28 Mar 2025. It can only be exploited from the same machine or local network, with no action from the victim.
Official description
A vulnerability classified as problematic was found in HDF5 up to 1.14.6. This vulnerability affects the function H5F__accum_free of the file src/H5Faccum.c. The manipulation of the argument overlap_size leads to heap-based buffer overflow. Attacking locally is a requirement. The exploit has been disclosed to the public and may be used.
Which versions are affected by CVE-2025-2915?
It affects 1 product.
Products include Hdfgroup Hdf5.
How do I fix CVE-2025-2915?
Upgrade to a fixed version.
Upgrade to the fixed version. Memory-safe languages, compiler hardening and fuzzing prevent most new cases. More about Memory corruption.
Is CVE-2025-2915 being exploited?
It is not confirmed as exploited in the wild, but public exploit code for CVE-2025-2915 exists.
Other vulnerabilities in Hdfgroup Hdf5
Sources
Also known as AZL-59388, AZL-59395, DEBIAN-CVE-2025-2915, ECHO-d3e9-a6b7-e512, GHSA-gg43-xfqw-xwg6, JLSEC-2026-332 and 1 more.