CVE-2019-0041

HIGH

Juniper Junos OS 18.2 < 18.2R1-S2, 18.2R2 on EX4300-MP - Improper Access Control via lo0 Filter Bypass

Title source: llm

Description

On EX4300-MP Series devices with any lo0 filters applied, transit network traffic may reach the control plane via loopback interface (lo0). The device may fail to forward such traffic. This issue affects Juniper Networks Junos OS 18.2 versions prior to 18.2R1-S2, 18.2R2 on EX4300-MP Series. This issue does not affect any other EX series devices.

References (1)

Core 1

Core References

Mitigation, Vendor Advisory x_refsource_confirm

https://kb.juniper.net/JSA10933

Scores

CVSS v3 8.6

EPSS 0.0028

EPSS Percentile 51.1%

Attack Vector NETWORK

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

Details

CWE

CWE-284

Status published

Products (1)

juniper/junos 18.2 (2 CPE variants)

Published Apr 10, 2019

Tracked Since Feb 18, 2026