---
title: "CVE-2026-103403: Juniper Networks Session Smart Router & Conductor - OS Command Injection"
description: "Juniper Networks Session Smart Router and Session Smart Conductor contain an OS command injection caused by improper neutralization of special elements in AccessManager, letting attackers execute arbitrary commands and delete files via audit rule deletion, exploit requires attacker access to audit rule deletion functionality."
url: https://panop.io/threat-heartbeat/CVE-2026-103403/
---

# CVE-2026-103403 Juniper Networks Session Smart Router & Conductor - OS Command Injection

Juniper Networks Session Smart Router and Session Smart Conductor contain an OS command injection caused by improper neutralization of special elements in AccessManager, letting attackers execute arbitrary commands and delete files via audit rule deletion, exploit requires attacker access to audit rule deletion functionality.

CVSS base score 8.8 /10

High

CISA KEV

Not listed

Public exploit

None known

Authentication

Required

[View the NVD record ↗](https://nvd.nist.gov/vuln/detail/CVE-2026-103403)

## Details

Type

OS Command Injection

Impact

Remote Code Execution, Data Tampering

CVSS vector

CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

Published

28 October 2026

Updated

29 October 2026

Weakness

[CWE-78](https://cwe.mitre.org/data/definitions/78.html)

## Vendor fix

Update to the latest available version with the fix.

Patching closes this CVE. It does not tell you which of your systems run the affected version, or what else is exposed alongside them.

## References

- [https://nvd.nist.gov/vuln/detail/CVE-2026-103403](https://nvd.nist.gov/vuln/detail/CVE-2026-103403)
- [https://supportportal.juniper.net/JSA112183](https://supportportal.juniper.net/JSA112183)

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## What this record can't tell you

- Whether you run the affected software, and where
- Whether an attacker can actually reach and exploit it
- The misconfigurations that never get a CVE number
- What it would cost the business, ranked into what to fix first

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