Critical Root RCE Vulnerability Patched in Juniper PTX Series Routers

#cybersecurity #infosec

Summary

Juniper Networks patched a critical vulnerability (CVE-2026-21902) in Junos OS Evolved on PTX Series routers that allows unauthenticated attackers to gain root access via a framework that should have been internal but is publicly exposed and not authenticated.

Take Action:

If you are using Junos OS Evolved, this is important. Either immediately patch your PTX Series routers or disable the 'On-Box Anomaly Detection' service. Depending on configuration, review if you can isolate the network devices from the public internet to mitigate the impact.

Read the full article on BeyondMachines

This article was originally published on BeyondMachines