CVE-2026-33802 PUBLISHED

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

Assigner: juniper
Reserved: 23.03.2026 Published: 09.07.2026 Updated: 10.07.2026

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.

Metrics

CVSS Vector: CVSS: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
CVSS Score: 6.8

Product Status

Vendor Juniper Networks
Product Junos OS
Versions Default: unaffected
  • affected from 23.2R2 to 23.2R2-S6 (excl.)
  • affected from 23.4 to 23.4R2-S8 (excl.)
  • affected from 24.2 to 24.2R2-S4 (excl.)
  • affected from 24.4 to 24.4R2-S3 (excl.)
  • affected from 25.2 to 25.2R2 (excl.)
  • affected from 25.4 to 25.4R1-S1 (excl.)

Exploits

Juniper SIRT is not aware of any malicious exploitation of this vulnerability.

Workarounds

There are no known workarounds for this issue. To reduce the risk of exploitation use command authorization to limit access to 'request' commands.

Solutions

The following software releases have been updated to resolve this specific issue:

Junos OS: 23.2R2-S6, 23.4R2-S8, 24.2R2-S4, 24.4R2-S3, 25.2R2, 25.4R1-S1, 25.4R2, 26.2R1, and all subsequent releases.

References

Problem Types

  • CWE-862 Missing Authorization CWE