CVE-2018-0004

A sustained sequence of different types of normal transit traffic can trigger a high CPU consumption denial of service condition in the Junos OS register and schedule software interrupt handler subsystem when a specific command is issued to the device. This affects one or more threads and conversely one or more running processes running on the system. Once this occurs, the high CPU event(s) affects either or both the forwarding and control plane. As a result of this condition the device can become inaccessible in either or both the control and forwarding plane and stops forwarding traffic until the device is rebooted. The issue will reoccur after reboot upon receiving further transit traffic. Score: 5.7 MEDIUM (CVSS:3.0/AV:A/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H) For network designs utilizing layer 3 forwarding agents or other ARP through layer 3 technologies, the score is slightly higher. Score: 6.5 MEDIUM (CVSS:3.0/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H) If the following entry exists in the RE message logs then this may indicate the issue is present. This entry may or may not appear when this issue occurs. /kernel: Expensive timeout(9) function: Affected releases are Juniper Networks Junos OS: 12.1X46 versions prior to 12.1X46-D50; 12.3X48 versions prior to 12.3X48-D30; 12.3R versions prior to 12.3R12-S7; 14.1 versions prior to 14.1R8-S4, 14.1R9; 14.1X53 versions prior to 14.1X53-D30, 14.1X53-D34; 14.2 versions prior to 14.2R8; 15.1 versions prior to 15.1F6, 15.1R3; 15.1X49 versions prior to 15.1X49-D40; 15.1X53 versions prior to 15.1X53-D31, 15.1X53-D33, 15.1X53-D60. No other Juniper Networks products or platforms are affected by this issue.

• CWE-400

• http://www.securitytracker.com/id/1040183Third Party Advisory, VDB Entry
• https://kb.juniper.net/JSA10832Vendor Advisory
• http://www.securitytracker.com/id/1040183Third Party Advisory, VDB Entry
• https://kb.juniper.net/JSA10832Vendor Advisory

Published

Jan 10, 2018

Last Modified

Jun 17, 2026

Status

Modified

• How Strix found a critical auth bypass in etcdStrix autonomously discovered a critical authentication bypass in etcd, later designated CVE-2026-33413.
• Autonomous PentestingAI agents that find and validate exploitable vulnerabilities like this one across your applications.
• PR ReviewsPentest every pull request so vulnerable code is caught before it ships to production.
• AI Penetration TestingHow AI-driven penetration testing continuously covers your attack surface.

• CVE-2018-0001A remote, unauthenticated attacker may be able to execute co…9.8
• CVE-2018-0002On SRX Series and MX Series devices with a Service PIC with …8.2
• CVE-2018-0003A specially crafted MPLS packet received or processed by the…6.5
• CVE-2018-0005QFX and EX Series switches configured to drop traffic when t…7.4
• CVE-2018-0006A high rate of VLAN authentication attempts sent from an adj…6.5
• CVE-2018-0007An unauthenticated network-based attacker able to send a mal…
• CVE-2018-0008An unauthenticated root login may allow upon reboot when a c…6.2
• CVE-2018-0009On Juniper Networks SRX series devices, firewall rules confi…5.4
• CVE-2018-0010A vulnerability in the Juniper Networks Junos Space Security…