Security readout for executives and security teams
Plain-English summary
CVE-2018-13873 is a buffer over-read in HDF5 1.8.20, a library used to process HDF5 data files. A specially crafted file may cause unsafe memory reads during file parsing. Business risk depends on whether systems accept HDF5 files from untrusted users or partners.
Executive priority
Treat as a targeted dependency risk. Escalate if HDF5 files are accepted from outside the organization; otherwise handle through normal vulnerable dependency remediation once fixed-version guidance is confirmed.
Technical view
The issue is reported in H5O_chunk_deserialize in H5Ocache.c within HDF HDF5 1.8.20. The source bundle does not provide CVSS, CWE, patch details, or downstream affected product mapping. A public PoC repository is referenced, but active exploitation is not confirmed.
Likely exposure
Most relevant exposure is software, pipelines, or services using HDF5 1.8.20 to open HDF5 files from untrusted or semi-trusted sources. Internal-only scientific workloads are lower concern unless file inputs cross trust boundaries.
Exploitation context
The CVE is not listed as KEV in the provided data. The referenced public PoC repository suggests reproducibility may be available, but the bundle does not confirm active exploitation or weaponized attacks.
Researcher notes
Evidence is limited to the CVE description and a public PoC reference. No CVSS, CWE, affected CPEs, patch version, or exploit-in-the-wild source is included. Avoid expanding scope beyond HDF5 1.8.20 without independent vendor evidence.
Mitigation direction
- Inventory applications and containers that include HDF5 1.8.20.
- Check HDF Group or package-maintainer guidance for fixed versions.
- Prioritize systems processing externally supplied HDF5 files.
- Restrict untrusted HDF5 file ingestion until remediation is confirmed.
- Run file-processing workloads with least privilege and isolation.
Validation and detection
- Confirm installed HDF5 library versions in affected services and build artifacts.
- Identify workflows that parse HDF5 files from users, partners, or public sources.
- Review crash reports or parser failures around HDF5 ingestion.
- Verify remediation against vendor or package-maintainer release notes.
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-2018-13873 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.