Security readout for executives and security teams
Plain-English summary
CVE-2018-13870 is a memory-read flaw in HDF5 1.8.20, a library used to read scientific and structured data files. The public record does not provide a score, patch, or confirmed real-world exploitation. Risk is highest where systems process untrusted HDF5 files.
Executive priority
Do not treat this as a confirmed emergency from the available evidence. Prioritize assessment where HDF5 1.8.20 processes untrusted files, because file-parser memory flaws can disrupt data workflows or expose sensitive processing paths.
Technical view
The CVE describes a heap-based buffer over-read in H5O_link_decode in H5Olink.c in HDF HDF5 1.8.20. Sources do not define CVSS, CWE, exploit impact, or fixed versions. A referenced public PoC repository suggests reproducibility evidence exists, but not active exploitation.
Likely exposure
Exposure likely depends on whether an application links HDF5 1.8.20 and parses attacker-controlled or untrusted HDF5 files. Scientific, analytics, research, ML, and data-conversion pipelines may be relevant. The provided sources do not identify specific downstream products.
Exploitation context
CISA KEV status is false in the provided bundle, and no cited source confirms active exploitation. The GitHub reference is a public PoC collection, but the bundle does not support claims of weaponized or in-the-wild use.
Researcher notes
The record is sparse: no CVSS, CWE, affected CPEs, or fix information are provided. Analysis should focus on dependency reachability, file-origin trust boundaries, and vendor-confirmed remediation. Avoid inferring downstream affected products from HDF5 usage alone.
Mitigation direction
- Inventory applications and packages that include HDF5 1.8.20.
- Check HDF Group or distribution guidance for fixed supported versions.
- Avoid processing untrusted HDF5 files until guidance is applied.
- Run HDF5 parsing in isolated, least-privileged environments.
- Prioritize systems handling external uploads or shared datasets.
Validation and detection
- Confirm the exact HDF5 library version in deployed software.
- Review SBOMs and dependency manifests for HDF5 1.8.20.
- Map workflows that parse HDF5 files from external parties.
- Check vendor advisories and package changelogs for this CVE.
- Verify mitigations on ingestion, conversion, and analysis services.
Public sources used
Generated from the cited source records. This long-tail analysis has not been individually reviewed by a named human.
Conservative CVE-to-ATT&CK context
These mappings and lookup hints may be relevant to the vulnerability behavior, CWE, affected product, or exposure path. Glexia-inferred context is not an official MITRE, ATT&CK, CWE, or CVE Program mapping.
ATT&CK lookup starting points
Use these exact CWE pages and searches to review the Glexia ATT&CK library from this CVE's weakness and description context.
CVE-2018-13870 mapping review
Open the CVE-to-ATT&CK bridge for reviewed, inferred, or future official mappings tied to this CVE.
Open ATT&CK lookup- Severity
- Unknown
- CVSS
- Not scored
- Known Exploited
- No
- Published
CNA and ADP enrichment extracted from CVE v5
These fields come from the CVE record and ADP containers, not from Glexia's Take. They preserve time-varying source decisions such as CISA SSVC, KEV status, CVSS metrics, and provider references.
CVSS and timeline data
No CVSS vectors or timeline events were available in the normalized CVE source material.
Source materials
- CVE List V5 sourceCVE List V5
- https://github.com/TeamSeri0us/pocs/tree/master/hdf5CVE reference · x_refsource_MISC
Products and packages named in the record
CWE details
CWE links open Glexia weakness intelligence pages with official CWE context, developer remediation guidance, and related CVE mappings.