CVE-2017-2331: Juniper Northstar Controller

High severity, CVSS 7.3. EPSS: 1.1% chance of exploitation in the next 30 days.

A firewall bypass vulnerability in Juniper Networks NorthStar Controller Application prior to version 2.1.0 Service Pack 1 may allow a network-based malicious attacker to bypass firewall policies, leading to authentication bypass methods, information disclosure, modification of system files, and denials of service.

Affected products

• Juniper Northstar Controller: up to and including 2.1.0

Published 2017-04-24. Last modified 2026-06-17.