CVE-2019-0041

Name: CVE-2019-0041
Creator: NVD / NIST
Published: 2019-04-10T20:29:00.943+00:00
License: https://creativecommons.org/publicdomain/zero/1.0/

HIGHCVSS 8.6/10EPSS 0.87%

Last modified Jun 17, 2026

CVE-2019-0041 is a high-severity vulnerability rated 8.6/10 on the CVSS scale. 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. EPSS estimates a 0.87% chance of exploitation in the next 30 days.

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.

Metrics

CVSS 3.1

8.6/10

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

EPSS Probability

0.87%

54.2th percentile

Probability of exploitation in the next 30 days. Learn more

Weakness Enumeration

CWE-284

Affected Software

Vendor	Product	Versions
Juniper	Junos	18.2

References

https://kb.juniper.net/JSA10933Mitigation, Vendor Advisory
https://kb.juniper.net/JSA10933Mitigation, Vendor Advisory

Timeline

Published: Apr 10, 2019
Last Modified: Jun 17, 2026
Status: Modified

Frequently Asked Questions

What is CVE-2019-0041?

How severe is CVE-2019-0041?

CVE-2019-0041 has a CVSS score of 8.6/10 (HIGH severity). The EPSS model estimates a 0.87% probability of exploitation in the next 30 days.

How do I fix CVE-2019-0041?

Check the vendor references and advisories linked above for patched versions and mitigation guidance. You can also run a Strix scan to test if your systems are affected.

Are you affected by CVE-2019-0041?

Run a free Strix scan to check your systems for this vulnerability.

Scan your code now

Source: NVD / NIST