Vulnerability · Published Jul 9, 2026 · Assigned by juniper

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

Medium 5.5

In plain English

A medium-severity missing authorization in Junos OS from Juniper Networks. There are no confirmed reports of exploitation so far. The chance it is exploited in the next 30 days is estimated at 0.1% (higher than 2% of all known vulnerabilities).

Severity (CVSS 3.1)5.5Medium

Exploit odds (30 days)0.1%top 98.0% of all CVEs

Exploited in the wildNo reportsCISA SSVC: none

Attack toolingNoneno public tooling known

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.

Affected products (as reported)

Vendor	Product	Versions
Juniper Networks	Junos OS	23.2R2 – before 23.2R2-S623.4 – before 23.4R2-S824.2 – before 24.2R2-S424.4 – before 24.4R2-S325.2 – before 25.2R225.4 – before 25.4R1-S1

Weakness: CWE-862 · Vector: CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H

References

https://supportportal.juniper.net/JSA110077 vendor-advisory