CVE-2026-116103

Sony Neural Network Libraries Encode Param encode_decode_param.py load_param_in_txt code injection

Published Oct 26, 2026 CVSS 4.0 · 5.3 Medium EPSS < 1% KEV · Not listed
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.

Analysis

AI-generated

Technical impact

The vulnerability resides in the load_param_in_txt function of Sony’s Neural Network Libraries, specifically within the Encode Param Command Handler. When an attacker supplies a crafted input file to the encode_decode_param.py utility, the function evaluates untrusted content, enabling code injection that satisfies CWE‑94. This capability can be leveraged to execute arbitrary shell commands, which is a classic command‑injection scenario identified as CWE‑74. The result is that a remote actor could inject and run arbitrary commands on the host system that runs the vulnerable library.

Affected Systems

Sony Neural Network Libraries versions up to and including 1.39.0 are affected. The issue is confined to releases that are no longer supported by the maintainer, meaning that any installation referencing those legacy versions is at risk. No other Sony product or component was explicitly identified as vulnerable in this advisory.

Risk and Exploitability

The CVSS score of 5.3 places this vulnerability in the medium severity category. EPSS information is not available, yet publicly available exploit code demonstrates that the attack can be initiated from outside the local host, indicating a remote attack vector. The vulnerability is not listed in CISA’s KEV catalog. Because the flaw permits arbitrary command execution, the potential impact on confidentiality, integrity, and availability is significant for systems that maintain the affected library versions.

Remediation

No solution or workaround provided in the CVE record.

OpenCVE Recommended Actions

  • Upgrade Sony Neural Network Libraries to a version newer than 1.39.0 or to any supported release that removes the load_param_in_txt flaw
  • If an upgrade is not possible, restrict network access to the encode_param CLI so that only trusted users on the host can invoke it
  • Run the CLI within a tightly‑controlled environment (e.g., a container or sandbox) with minimal permissions to prevent the injected code from affecting the underlying host

Generated by OpenCVE AI on October 26, 2026 at 02:21 UTC.

Tracking

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Advisories

No advisories available
History
Type Values Removed Values Added
Metrics ssvc

{'options': {'Automatable': 'no', 'Exploitation': 'poc', 'Technical Impact': 'partial'}, 'version': '2.0.3'}

Type Values Removed Values Added
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.
Title Sony Neural Network Libraries Encode Param encode_decode_param.py load_param_in_txt code injection
First Time appeared Sony
Sony neural Network Libraries
Weaknesses CWE-74
CWE-94
CPEs cpe:2.3:a:sony:neural_network_libraries:*:*:*:*:*:*:*:*
Vendors & Products Sony
Sony neural Network Libraries
References
Metrics cvssV2_0

{'score': 7.5, 'vector': 'AV:N/AC:L/Au:N/C:P/I:P/A:P/E:POC/RL:ND/RC:C'}

cvssV3_0

{'score': 6.3, 'vector': 'CVSS:3.0/AV:N/AC:L/PR:N/UI:R/S:U/C:L/I:L/A:L/E:P/RL:X/RC:C'}

cvssV3_1

{'score': 6.3, 'vector': 'CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:L/I:L/A:L/E:P/RL:X/RC:C'}

cvssV4_0

{'score': 5.3, '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'}

Weaknesses
  • CWE-74

    Improper Neutralization of Special Elements in Output Used by a Downstream Component ('Injection')

  • CWE-94

    Improper Control of Generation of Code ('Code Injection')

Sources

Status
PUBLISHED
Assigner
VulDB
Published
Updated
Oct 29, 2026, 8:44 PM
Reserved
Oct 25, 2026, 7:37 AM
Status
Deferred
Published
Oct 26, 2026, 1:17 AM
Modified
Oct 29, 2026, 9:17 PM