CVE-2026-33802 Junos OS: EX Series: Unauthorized users can execute service-impacting CLI command

Medium 6.8 Published 9 Jul 2026 Updated 10 Jul 2026

An authenticated local attacker can execute a privileged CLI command on Juniper EX switches, causing a denial of service.

Exploited in the wild: Not known
Login needed: Any signed-in user
Attackable: Local or same network only
Victim action needed: Not needed
Fix: None listed

What is CVE-2026-33802?

CVE-2026-33802 is a medium-severity missing authorization vulnerability in Juniper Junos, published on 9 Jul 2026. It can only be exploited from the same machine or local network, with no action from the victim.

Official description

A Missing Authorization vulnerability in the CLI of Juniper Networks Junos OS on EX Series allows a local, authenticated attacker to cause a Denial-of-Service (DoS).

On EX2300, EX4000, EX4100, EX4300-MP (Multigigabit) and EX4400 switches, an authenticated, local attacker with no specific permissions or class can execute a specific, privileged CLI 'request' command which will cause complete traffic impact until the system automatically recovers.

This issue affects Junos OS on EX2300, EX4000, EX4100, EX4300-MP (Multigigabit) and EX4400:

* 23.2R2 versions before 23.2R2-S6, * 23.4 versions before 23.4R2-S8, * 24.2 versions before 24.2R2-S4, * 24.4 versions before 24.4R2-S3, * 25.2 versions before 25.2R2, * 25.4 versions before 25.4R1-S1.

Weakness: CWE-862

Which versions are affected by CVE-2026-33802?

It affects 1 product.

Products include Juniper Junos.

How do I fix CVE-2026-33802?

No fix has been published for CVE-2026-33802 yet. Limit exposure of the affected software until one is available.

Upgrade, and check permissions on every request on the server, not only in the interface. More about Missing authorization.

Is CVE-2026-33802 being exploited?

There is no known exploitation of CVE-2026-33802 in the wild and no public exploit code.

All Juniper Junos vulnerabilities

Sources

Also known as GHSA-4c4g-46p8-24mq.