CVE-2018-0059: Juniper Netscreen ScreenOS

Medium severity, CVSS 5.4. EPSS: 0.8% chance of exploitation in the next 30 days.

A persistent cross-site scripting vulnerability in the graphical user interface of ScreenOS may allow a remote authenticated user to inject web script or HTML and steal sensitive data and credentials from a web administration session, possibly tricking a follow-on administrative user to perform administrative actions on the device. Affected releases are Juniper Networks ScreenOS 6.3.0 versions prior to 6.3.0r26.

Affected products

• Juniper Netscreen ScreenOS: version 6.3.0 only; version 6.3.0r1 only; version 6.3.0r2 only; version 6.3.0r3 only; version 6.3.0r4 only; version 6.3.0r5 only; …

Published 2018-10-10. Last modified 2026-06-17.