CVE-2026-33802 — MEDIUM (5.5)

Vulnerability 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.

CVSS Score

5.5

MEDIUM

CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H

Attack Vector

LOCAL

Attack Complexity

LOW

Privileges Required

LOW

User Interaction

NONE

Scope

UNCHANGED

Confidentiality

NONE

Integrity

NONE

Availability

HIGH

Affected Products

Vendor	Product	Versions
Juniper	Junos	23.2
Juniper	Ex2300	-
Juniper	Ex4000	-
Juniper	Ex4100	-
Juniper	Ex4300-Mp	-
Juniper	Ex4400	-

Related Weaknesses (CWE)

CWE-862

References

https://supportportal.juniper.net/JSA110077Vendor Advisory

FAQ

What is CVE-2026-33802?

CVE-2026-33802 is a vulnerability with a CVSS score of 5.5 (MEDIUM). 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, EX43...

How severe is CVE-2026-33802?

CVE-2026-33802 has been rated MEDIUM with a CVSS base score of 5.5/10. Review the CVSS metrics above for detailed severity breakdown.

Is there a patch for CVE-2026-33802?

Check the references section above for vendor advisories and patch information. Affected products include: Juniper Junos, Juniper Ex2300, Juniper Ex4000, Juniper Ex4100, Juniper Ex4300-Mp.