What is CVE-2026-103406?

CVE-2026-103406 is a critical-severity vulnerability in Juniper Networks Session Smart Conductor, classified under OS Command Injection. CVSS score: 9.8/10. Published 2026-10-28.

How severe is CVE-2026-103406?

Critical severity. CVSS v3 base score is 9.8 out of 10.

RCE in Juniper Networks Session Smart Conductor

CVE-2026-103406

An Improper Neutralization of Special Elements used in an OS Command vulnerability in the AutomatedProvisioner in Juniper Networks Session Smart Conductor allows a remote attacker to execute arbitrary commands as root via a specially crafted salt minion ID.

Vulnerability class: Command Injection (OS Command Injection)

Published 2026-10-28 · last modified 2026-10-28.

CVSS v3 metric

CVSS v3 base score 9.8 (Critical). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H.

EPSS exploit prediction

No EPSS score from FIRST.org yet. New CVEs usually get one within a few days; no score means no signal yet, not low risk. How EPSS works.

Affected products

Juniper Networks Session Smart Conductor

Weakness classification (CWE)

CWE-78 — OS Command Injection

References

supportportal.juniper.net/JSA112183 (vendor-advisory)

Frequently asked questions

What is CVE-2026-103406?: CVE-2026-103406 is a critical-severity vulnerability in Juniper Networks Session Smart Conductor, classified under OS Command Injection. CVSS score: 9.8/10. Published 2026-10-28.
How severe is CVE-2026-103406?: Critical severity. CVSS v3 base score is 9.8 out of 10.