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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.

PUBLISHED Reserved 2026-03-23 | Published 2026-07-09 | Updated 2026-07-10 | Assigner juniper




MEDIUM: 5.5CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H

MEDIUM: 6.8CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:L/AU:Y/R:A/RE:M

Problem types

CWE-862 Missing Authorization

Product status

Default status
unaffected

23.2R2 (custom) before 23.2R2-S6
affected

23.4 (custom) before 23.4R2-S8
affected

24.2 (custom) before 24.2R2-S4
affected

24.4 (custom) before 24.4R2-S3
affected

25.2 (custom) before 25.2R2
affected

25.4 (custom) before 25.4R1-S1
affected

References

supportportal.juniper.net/JSA110077 vendor-advisory

cve.org (CVE-2026-33802)

nvd.nist.gov (CVE-2026-33802)

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