CVE-2024-39522: Juniper Junos OS Evolved

High severity, CVSS 7.8. EPSS: 0.3% chance of exploitation in the next 30 days.

An Improper Neutralization of Special Elements vulnerability in Juniper Networks Junos OS Evolved commands allows a local, authenticated attacker with low privileges to escalate their privileges to 'root' leading to a full compromise of the system. The Junos OS Evolved CLI doesn't properly handle command options in some cases, allowing users which execute specific CLI commands with a crafted set of parameters to escalate their privileges to root on shell level. This issue affects Junos OS Evolved: * 22.3-EVO versions before 22.3R2-EVO, * 22.4-EVO versions before 22.4R1-S1-EVO, 22.4R2-EVO.

Affected products

• Juniper Junos OS Evolved: version 22.3 only; version 22.4 only

Published 2024-07-11. Last modified 2026-06-17.