CVE-2019-0067 Denial of service in Junos OS

What is CVE-2019-0067?

CVE-2019-0067 is a medium-severity denial of service vulnerability in Juniper Junos, published on 9 Oct 2019. It can only be exploited from the same machine or local network, with no action from the victim.

Official description

Receipt of a specific link-local IPv6 packet destined to the RE may cause the system to crash and restart (vmcore). By continuously sending a specially crafted IPv6 packet, an attacker can repeatedly crash the system causing a prolonged Denial of Service (DoS). This issue affects Juniper Networks Junos OS: 16.1 versions prior to 16.1R6-S2, 16.1R7; 16.2 versions prior to 16.2R2-S10; 17.1 versions prior to 17.1R3. This issue does not affect Juniper Networks Junos OS version 15.1 and prior versions.

Which versions are affected by CVE-2019-0067?

It affects 1 product.

Products include Juniper Junos.

How do I fix CVE-2019-0067?

No fix has been published for CVE-2019-0067 yet. Limit exposure of the affected software until one is available.

Upgrade, then put limits on request size, rate and nesting depth so one client cannot exhaust the service. More about Denial of service.

Is CVE-2019-0067 being exploited?

There is no known exploitation of CVE-2019-0067 in the wild and no public exploit code.

Other vulnerabilities in Juniper Junos

• CVE-2023-36845 Juniper Junos OS EX Series and SRX Series PHP External Variable Modification Exploited Critical 9.8
• CVE-2020-1631 Juniper Junos OS Path Traversal Exploited High 8.8
• CVE-2025-21590 Juniper Junos OS Improper Isolation or Compartmentalization Exploited Medium 6.7
• CVE-2023-36851 Juniper Junos OS SRX Series Missing Authentication for Critical Function Exploited Medium 5.3
• CVE-2023-36844 Juniper Junos OS EX Series PHP External Variable Modification Exploited Medium 5.3

All Juniper Junos vulnerabilities

Sources

• CVE record
• NVD
• OSV
• GitHub advisory
• How this page is made

Also known as GHSA-j6jw-rjg4-7274.