Le Centre canadien pour la cybersécurité alerte sur des vulnérabilités critiques touchant les produits Juniper Networks en date du 28 octobre 2026.

The Session Smart Router can be accessed without any login, letting a network attacker take full control of the device.

The Session Smart Conductor system can be tricked by an unauthenticated user into running whatever commands they want on the server, giving them full.

TL;DR Juniper Networks published its October 2026 security bulletins on October 14, 2026, resolving dozens of critical Junos OS vulnerabilities. Several flaws carry a 9.8 CVSS v3.1 score and allow unauthenticated remote code execution or full device takeover. Consequently, network administrators must deploy the updated software releases immediately to protect their routing and firewall infrastructure. Why It Matters Junos OS and Junos OS Evolved power core enterprise routers, data center switches, and service provider firewalls worldwide.

Juniper Networks' Junos OS running on SRX firewalls can be attacked when a GRE tunnel is set up.

The Junos operating system on SRX devices uses a component that contacts an HTTPS feed server for security information.

Juniper's SRX firewalls running Junos OS may be vulnerable when the anti‑spam DNS blacklist feature is turned on.

Juniper Networks' Junos OS on MX series routers can be tricked by specially crafted IKE certificate packets to run any code with administrator privileges.

Juniper's Junos OS and Junos OS Evolved can be forced to stop working if a network device that talks to them sends specially crafted routing information.

Junos OS Evolved can be tricked by a user with only basic TACACS+ rights to run commands as the system administrator when the periodic.

If BMP route monitoring is enabled, a malicious BGP neighbor can overflow a buffer in the routing daemon and execute any command with full system privileges.

The TWAMP client built into Junos OS can be triggered by a specially formed network packet to shut down the rmopd service, which handles measurement traffic.

Juniper's Junos OS Evolved can experience a sudden system crash if an attacker sends a specially crafted network packet while BGP or LDP is using.

If a Junos OS or Junos OS Evolved device has the J-Web web management interface turned on, anyone on the same network can connect to it without a password.

The zero‑touch provisioning service in Juniper Junos OS Evolved can be tricked by a forged DHCP reply on the management network, letting an.

Juniper SRX firewalls that run Junos OS and use AutoDiscovery VPN can be taken over if they receive a specially malformed message from a trusted peer.

If a Junos OS router has the Extended Echo feature turned on, a specially crafted network packet can make the system’s core software crash and restart,.

Juniper's Junos OS and Junos OS Evolved have a bug in their BGP routing component that can be triggered by a specially crafted network update.

The threat‑feed feature in Junos OS on SRX firewalls can be tricked by a malicious response from the custom URL you configure.

Juniper's Junos OS and Junos OS Evolved web management interface (J-Web) can be tricked into running malicious code when a virtual domain is set up.

The routing software in Juniper Junos OS and Junos OS Evolved can be tricked by a specially crafted network connection into crashing or running any code.

The web management interface (J-Web) in Junos OS and Junos OS Evolved can be accessed without logging in, allowing an outsider to run scripts with.

The Junos OS and Junos OS Evolved systems have a flaw in the service‑deployment component that could let an outside attacker take control of the device or.

The Junos operating system used on SRX firewalls can be tricked by a specially crafted Security Intelligence feed into executing commands with full system.

If the J-Web management interface is turned on, an attacker on the network can access it without any login and run any Junos command with full.