Executive Risk Summary
"A write-based heap buffer overflow condition can be triggered in HDF5 prior to version 1.14.4-2, potentially leading to a denial-of-service condition and possibly remote code execution. This vulnerability can be exploited by an attacker controlling an `h5` file parsed by HDF5."
Anticipated Attack Path
- 1. Attacker crafts a malicious `h5` file
- 2. Victim system parses the malicious `h5` file using HDF5
- 3. Heap buffer overflow is triggered, potentially leading to code execution
Am I Vulnerable?
- Verify HDF5 version is 1.14.4-2 or later
- Monitor for suspicious activity related to `h5` file parsing
- Implement security controls to restrict access to HDF5
Operational Audit Arsenal
Target Type library
Target Asset libhdf5
Standard Path /usr/lib/x86_64-linux-gnu/
Manual Verification Required
This is a non-Windows asset (HDF Group). Use the target asset details and official path provided above to verify your current version against the official vendor advisories listed below.
Patch Impact Forecast
Reboot Required Unlikely
Minimal, as the patch only updates the HDF5 library
Internal Work Notes
HDF5 vulnerability CVE-2026-26200 - Potential remote code execution via heap buffer overflow in `h5` file parsing. Upgrade to version 1.14.4-2 or later to mitigate.
Technical Intelligence & Operational Utilities • Delivered Weekly
Intelligence Sources
Related HDF Group Threats
Data compiled from NVD, MSRC, and CISA KEV Catalog. Intelligence synthesized via AI. Scripts provided for diagnostic purposes under MIT License.